Review Questions and Answers PDF

Electricity: 1. What Is the difference between static and current electricity? ​ Static Electricity: The buildup of electric charge on the surface of an object; charges are stationary. ​ Current Electricity: The flow of electric charges (electrons) through a conductor. 2. State the L...

Electricity: 1. What Is the difference between static and current electricity? ​ Static Electricity: The buildup of electric charge on the surface of an object; charges are stationary. ​ Current Electricity: The flow of electric charges (electrons) through a conductor. 2. State the Laws of Electric Charge. ​ Like charges repel. ​ Opposite charges attract. ​ A neutral object can be attracted to a charged object. 3. There are three methods of charging: friction, contact, induction. For each method, describe the charge of the objects before (If any) and the charges of the objects after, and give an everyday example for each. ​ Friction: Rubbing two neutral objects transfers electrons. Example: Rubbing a balloon on your hair (balloon becomes negatively charged, hair positively charged). ​ Contact: A charged object touches a neutral object, transferring charge. Example: Touching a charged metal rod to a neutral metal sphere. ​ Induction: A charged object near a neutral object causes redistribution of charges without direct contact. Example: A negatively charged rod brought near a neutral electroscope. 4. Distinguish between Insulators and conductors. Give 2 examples for each. ​ Insulators: Do not allow electrons to flow easily. Examples: Rubber, glass. ​ Conductors: Allow electrons to flow easily. Examples: Copper, aluminum. 5. What is an electroscope? How is it used? ​ An instrument used to detect electric charge. When a charged object comes near the electroscope, its leaves spread apart. 6. Explain why you can easily get shocked after sliding down a plastic slide? Would a metal slide produce the same result? ​ Friction between clothing and plastic generates static electricity, causing a charge imbalance. A metal slide wouldn't produce the same result because it allows charges to dissipate quickly. 7. How is lightning created? How do lightning rods protect buildings from lightning? ​ Lightning: Caused by charge buildup in clouds; discharge occurs between clouds or to the ground. ​ Lightning rods: Provide a path for lightning to safely reach the ground, protecting structures. 8. What is grounding? What materials are used to ground objects? ​ Connecting an object to the Earth to neutralize charge. Materials: Copper, metal rods. 9. Create a chart to compare: current, voltage, resistance, power, %efficiency. Include the following criteria: definition, symbol, unit of measurement, formula Chart for Current, Voltage, Resistance, Power, and Efficiency: Property Definition Symbo Unit Formula l Current Flow of electric charge I Amperes (A) Voltage Electric potential difference V Volts (V) Resistanc Opposition to current R Ohms (Ω) e Power Rate of electrical energy P Watts (W) transfer Efficiency Useful energy output vs. % Percentage input 10. What 4 factors affect the resistance of a wire? ​ Length of wire (longer = more resistance). ​ Width (thicker = less resistance). ​ Material (e.g., copper has low resistance). ​ Temperature (higher = more resistance). 11. An electrical appliance draws 5.9Aof current when connected to a 250 V power source. What is the resistance of the device? Review electrical measurement problems from notes. Solve for power, resistance, current, voltage, kilowatt hour (how much kilowatts is used per hour) 12. Distinguish between series and parallel circuits with respect to: number of pathways, current, potential difference, resistance, ability to control loads independently. What kind of circuits do we have in our homes? What is the difference of current and potential difference when measured at different points? (hint 11+13+13, etc) ​ Series: One pathway; current same throughout; voltage shared; resistance adds. ​ Parallel: Multiple pathways; voltage same across each branch; current splits; resistance decreases. 13. What is percent efficiency? How do you calculate it? 14. How much electrical energy is converted to electrical energy when there is 20 C of negative charge at the negative terminal causing a potential difference of 15 V? 15. What is the potential difference across an electric water heater that has a resistance of 32 0 when the current through It Is 6.8A? 16. if the current flowing through a conductor is 1.8A, how much time is required for a charge of 300 C to pass through? 17. Draw a series circuit and a parallel circuit each with 3 light bulbs. How do you connect ammeters and voltmeters to the circuits? Where would you attach switches to control the light bulbs? Astronomy: 1. Name the 8 planets in order of their proximity to the Sun. What is the definition of a planet? Why does Pluto no longer fit into this definition? ​ Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. A planet is a celestial body that: ​ Orbits the Sun. ​ Has sufficient mass for its gravity to form a nearly round shape. ​ Clears its orbital path of other debris. ​ Pluto fails the third criterion as it shares its orbit with other objects in the Kuiper Belt. 2. What are the characteristics that a celestial body must have in order to be classified as a planet? ​ Must orbit a star (like the Sun). ​ Must have enough gravity to pull itself into a nearly spherical shape. ​ Must clear its orbit of other debris. 3. How are the first 4 planets similar? How are the 4 gas planets similar? First 4 planets (Terrestrial planets): Mercury, Venus, Earth, Mars ​ Rocky surfaces. ​ Smaller size. ​ Few or no moons. Gas Giants (Outer planets): Jupiter, Saturn, Uranus, Neptune ​ Composed mainly of hydrogen and helium. ​ Large size. ​ Many moons and rings. 4 What type of star-Is our Sun? What is the final fate of our Sun? ​ Type: The Sun is a G-type main-sequence star (yellow dwarf). ​ Final Fate: It will expand into a red giant, shed its outer layers, and eventually become a white dwarf surrounded by a planetary nebula. 5. What is Fusion? At what temperature does fusion begin? Where does it happen? ​ Fusion: The process where lighter nuclei (e.g., hydrogen) combine to form heavier nuclei (e.g., helium), releasing enormous energy. ​ Temperature: Fusion begins at approximately 10 million Kelvin (K). ​ Location: Occurs in the core of stars. 6. What is the moon? Describe its rotation and orbit. ​ Moon: Earth's natural satellite, made of rock and dust. ​ Rotation and Orbit: ○​ The Moon rotates on its axis and orbits Earth in 27.3 days, leading to the same side of the Moon always facing Earth (synchronous rotation). 7. Define: a)astronomical unit b)light-year c)intermediate mas stars d)massive stars ​ Astronomical Unit (AU): The average distance between Earth and the Sun (~149.6 million km). ​ Light-Year: The distance light travels in one year (~9.46 trillion km). ​ Intermediate Mass Stars: Stars with masses between 2 and 8 times that of the Sun. ​ Massive Stars: Stars with masses greater than 8 times the Sun's mass. 8. What are stars made of? ​ Primarily hydrogen and helium, with trace amounts of heavier elements. 9. How long are the lives of a) low mass sun bl intermediate mass stars cl massive stars ​ Low-Mass Stars: Live billions to trillions of years, ending as white dwarfs. ​ Intermediate Mass Stars: Live tens to hundreds of millions of years, ending as white dwarfs after shedding a planetary nebula. ​ Massive Stars: Live millions of years, ending as supernovae, then becoming neutron stars or black holes. 10. What is a nebula? ​ A vast cloud of gas and dust in space where stars are born or remnants of exploded stars. 11. All stars are formed from nebulas. Depending on their mass they will become different things. What is the fate of each type of star? ​ Low-Mass Stars: Become white dwarfs. ​ Intermediate Mass Stars: Shed their outer layers to form planetary nebulas, leaving white dwarfs. ​ Massive Stars: End in supernovae; remnants become neutron stars or black holes. 12. Define luminosity. ​ Luminosity is the total amount of energy a star emits per second. 13. Where Is the asteroid belt found In our solar system? ​ Between the orbits of Mars and Jupiter. 14. State the star colours in order from hottest to coolest. ​ Blue, White, Yellow, Orange, Red. 15. Compare how a planet is different from a star. (3 differences) ​ Energy Production: Stars generate their own light and heat through nuclear fusion; planets do not. ​ Size: Stars are much larger than planets. ​ Composition: Stars are primarily hydrogen and helium, while planets can be rocky or gaseous. 16. What are sunspots, solar prominences and solar flares? ​ Sunspots: Cooler, darker areas on the Sun’s surface caused by magnetic activity. ​ Solar Prominences: Large, bright loops of gas extending from the Sun’s surface, anchored by magnetic fields. ​ Solar Flares: Sudden, intense bursts of energy caused by magnetic field changes. 17. Describe why we have seasons on Earth ​ Seasons occur due to the tilt of Earth's axis (23.5°) relative to its orbit around the Sun. This tilt causes different parts of Earth to receive varying amounts of sunlight throughout the year. Light year definition A light year is the distance that light travels in one year, approximately 9.46 trillion kilometers (5.88 trillion miles). Reason we have seasons Seasons occur due to the tilt of Earth's axis (23.5°) as it orbits the Sun. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year. Stars from coolest to hottest The order of star colors from coolest to hottest is:​ Red → Orange → Yellow → White → Blue. Life span of stars ​ Low-mass stars: Billions to trillions of years (e.g., red dwarfs). ​ Intermediate-mass stars: Around 10 billion years (e.g., our Sun). ​ Massive stars: A few million years due to faster fuel consumption. Anatomy of the Sun The Sun's structure includes: 1.​ Core: Site of nuclear fusion. 2.​ Radiative Zone: Energy transferred outward via radiation. 3.​ Convective Zone: Energy transferred through convection currents. 4.​ Photosphere: Visible surface emitting light. 5.​ Chromosphere: Reddish layer above the photosphere. 6.​ Corona: Outermost layer, visible during a solar eclipse. Solar/Lunar Eclipse ​ Solar Eclipse: Occurs when the Moon passes between the Earth and Sun, blocking sunlight. ​ Lunar Eclipse: Occurs when the Earth passes between the Sun and Moon, casting a shadow on the Moon. Azimuth definition Azimuth is the angular measurement in a spherical coordinate system, representing the direction of a celestial object from the observer's location, measured clockwise from true north. Short Answers Compare celestial objects  ​ Planets: Rocky or gaseous, orbit a star, do not emit light. ​ Stars: Massive, emit light through fusion. ​ Moons: Orbit planets, reflect sunlight. ​ Asteroids: Small rocky objects, orbit the Sun. Table of star colors, temperatures, and mass Color Temperature (K) Mass (Solar Masses) Red < 3,500 0.08–0.5 Orange 3,500–5,000 0.5–0.8 Yellow 5,000–6,000 0.8–1.4 White 6,000–10,000 1.4–2.1 Blue > 10,000 2.1–50+ Compare relationship between characteristics and life span ​ High-mass stars: Hotter, brighter, shorter lifespans due to rapid fuel consumption. ​ Low-mass stars: Cooler, dimmer, longer lifespans as they burn fuel slowly. ​ Intermediate-mass stars: Moderate temperature, brightness, and lifespan (e.g., Sun). Ecology: 1. Define the following terms: Bioaccumulation, bioamplification, population, leaching, producer, primary consumer, secondary consumer, community, heterotroph, autotroph, top carnivore, invasive species, predator prey relationship, carrying capacity, niche, scavenger, decomposer, detritivore Bioaccumulation: The buildup of toxic substances, like pesticides or heavy metals, in the tissues of an organism over its lifetime. ​ Bioamplification (Biomagnification): The increasing concentration of toxic substances as they move up the food chain. ​ Population: A group of individuals of the same species living in a specific area at a given time. ​ Leaching: The process by which nutrients or chemicals are dissolved and washed away from soil or waste, often into water sources. ​ Producer: An organism, typically a plant or algae, that makes its own food through photosynthesis or chemosynthesis. ​ Primary Consumer: Herbivores that feed on producers (e.g., deer eating plants).  ​ Secondary Consumer: Carnivores or omnivores that eat primary consumers (e.g., a snake eating a mouse). ​ Community: All the different species that live and interact within a specific area. ​ Heterotroph: An organism that cannot produce its own food and relies on consuming other organisms (e.g., animals, fungi). ​ Autotroph: An organism that produces its own food, typically through photosynthesis (e.g., plants, algae). ​ Top Carnivore: The predator at the top of a food chain, with no natural predators (e.g., lions, eagles). ​ Invasive Species: Non-native species introduced to an ecosystem that outcompetes native species and disrupts the balance. ​ Predator-Prey Relationship: The interaction between a predator (hunter) and its prey (hunted), which helps regulate populations. ​ Carrying Capacity: The maximum population size of a species that an environment can sustainably support. ​ Niche: The role or function of an organism in its ecosystem, including its habitat, diet, and interactions with other species. ​ Scavenger: An organism that feeds on dead or decaying organic matter (e.g., vultures). ​ Decomposer: Organisms, such as fungi and bacteria, that break down dead organic material, recycling nutrients into the ecosystem. ​ Detritivore: A type of decomposer that feeds on and breaks down organic material, such as dead plants and animals (e.g., earthworms, woodlice). 2. Explain the carbon cycle. What pans are in balance and what pans are not? What happens when the carbon cycle becomes unbalanced? ​ The carbon cycle is the process by which carbon moves through the Earth's ecosystems, atmosphere, oceans, and geosphere. Key Components of the Carbon Cycle: ​ Photosynthesis: Plants and algae absorb CO₂ from the atmosphere to produce glucose and oxygen. ​ Respiration: Organisms (plants, animals, and decomposers) release CO₂ back into the atmosphere through metabolic processes. ​ Decomposition: Decomposers break down dead organisms, releasing carbon into the soil or atmosphere. ​ Fossilization: Organic matter buried under layers of sediment can transform into fossil fuels over millions of years. ​ Combustion: Burning fossil fuels releases stored carbon as CO₂ into the atmosphere. ​ Oceans: Absorb CO₂ from the atmosphere and store it as dissolved carbon or in marine organisms and sediments. Balanced and Unbalanced Parts: ​ Balanced: Photosynthesis and respiration maintain a natural exchange of carbon. ​ Unbalanced: Human activities such as deforestation, excessive fossil fuel combustion, and industrialization disrupt the cycle, leading to increased atmospheric CO₂. Consequences of an Unbalanced Carbon Cycle: ​ Climate Change: Excess CO₂ traps heat in the atmosphere, causing global warming. ​ Ocean Acidification: More CO₂ dissolving into oceans makes them more acidic, harming marine life. ​ Disruption of Ecosystems: Shifts in temperature and weather patterns affect biodiversity and habitats. 3 Explain the difference between biotic factors and biotic factors. Give 2 examples of each. ​ Abiotic Factors: Non-living components of an ecosystem that affect living organisms. ○​ Examples: Temperature, sunlight, water availability. ​ Biotic Factors: Living components of an ecosystem that interact with other organisms. ○​ Examples: Plants, animals, fungi. 4. Draw a food chain and a food web. Use the following words to label the organism: 1st trophic level, 2nd trophic level, 3rd trophic level, herbivore, carnivore, omnivore, producer, primary consumer. secondary consumer. autotroph, heterotroph. Describe what would happen If different organisms either increased or decreased. Food Chain Example: ​ Producer (1st Trophic Level): Grass (autotroph). ​ Primary Consumer (2nd Trophic Level): Rabbit (herbivore). ​ Secondary Consumer (3rd Trophic Level): Fox (carnivore). Food Web Example: A more complex diagram showing multiple interactions: ​ Grass → Rabbit → Fox → Eagle ​ Grass → Grasshopper → Frog → Snake → Hawk ​ (Include arrows showing energy flow and label trophic levels, autotrophs, and heterotrophs.) Effects of Changes in Populations: ​ Increase in Rabbits: More food for foxes and eagles, but overgrazing could deplete grass. ​ Decrease in Rabbits: Foxes might starve or switch prey, disrupting other species. 5. What Is In the lithosphere, biosphere, hydrosphere and atmosphere? ​ Lithosphere: Solid, outer layer of the Earth (rocks, soil, minerals). ​ Biosphere: All living organisms and their ecosystems. ​ Hydrosphere: All water on Earth (oceans, rivers, glaciers, groundwater). ​ Atmosphere: Layer of gases surrounding Earth (oxygen, nitrogen, carbon dioxide). 6. Name the four major Canadian biomes and describe each 1. Tundra ​ Location: Found in northern Canada, near the Arctic Circle. ​ Climate: Extremely cold, with short summers and low precipitation (mostly as snow).  ​ Vegetation: Lichens, mosses, and small shrubs adapted to permafrost (permanently frozen soil). ​ Wildlife: Caribou, arctic foxes, and migratory birds. 2. Boreal Forest (Taiga) ​ Location: Covers most of central Canada, including areas in Alberta, Manitoba, and Quebec. ​ Climate: Long, cold winters and short, warm summers with moderate precipitation. ​ Vegetation: Coniferous trees like spruce, fir, and pine dominate. ​ Wildlife: Moose, wolves, black bears, and many types of birds. 3. Temperate Deciduous Forest ​ Location: Found in southern parts of Ontario and Quebec. ​ Climate: Moderate temperatures, distinct seasons, and relatively high precipitation. ​ Vegetation: Deciduous trees such as maple, oak, and birch. ​ Wildlife: Deer, foxes, squirrels, and a variety of birds. 4. Grasslands (Prairies) ​ Location: Found in southern parts of Alberta, Saskatchewan, and Manitoba. ​ Climate: Warm summers, cold winters, and low to moderate precipitation. ​ Vegetation: Grasses and shrubs dominate, with very few trees due to low rainfall. ​ Wildlife: Bison, prairie dogs, hawks, and insects like grasshoppers. 7. How do Invasive species affect the ecosystem? ​ Competition: Outcompete native species for resources. ​ Predation: Prey on native species that lack defenses. ​ Habitat Alteration: Change soil, water, or forest composition. ​ Examples: Zebra mussels clog waterways, emerald ash borers destroy trees. 8. Compare cellular respiration to photosynthesis. Process Cellular Respiration Photosynthesis Purpose Release energy from glucose for cells. Convert sunlight into chemical energy. Reactant Glucose (C₆H₁₂O₆), Oxygen (O₂). Carbon dioxide (CO₂), Water (H₂O). s Products Carbon dioxide (CO₂), Water (H₂O), Glucose (C₆H₁₂O₆), Oxygen (O₂). Energy. Location Mitochondria. Chloroplasts. Energy Releases ATP. Stores energy in glucose. 9. What are the effects of bioaccumulation and bioamplification? Now does It happen? Bioaccumulation: ​ Definition: Toxins build up in an organism over its life. ​ Effect: Causes health issues like organ damage and reproductive problems. Bioamplification: ​ Definition: Toxin concentration increases as it moves up the food chain. ​ Effect: Top predators suffer the most (e.g., mercury poisoning in fish-eating birds). How It Happens: ​ Pollutants like pesticides or heavy metals enter ecosystems through water, soil, or air. ​ Producers absorb toxins, which are passed up the food chain as consumers eat contaminated organisms. Chemistry 1. Distinguish between the following: a. Physical and Chemical Properties ​ Physical Properties: Characteristics observed without changing the substance's identity (e.g., color, density). ​ Chemical Properties: Describe a substance's ability to form new substances (e.g., flammability, reactivity). b. Qualitative and Quantitative Physical Properties ​ Qualitative: Described without measurement (e.g., color, texture). ​ Quantitative: Measured with numbers (e.g., mass, volume). c. Physical and Chemical Changes ​ Physical Changes: Changes that do not alter the substance's chemical structure (e.g., melting, boiling). ​ Chemical Changes: Changes that produce new substances (e.g., rusting, burning). 2. Look through your notes and identify 2 examples of each. ​ Physical Change: Melting ice, cutting paper. ​ Chemical Change: Baking a cake, burning wood. 3. Matter is classified as pure and impure. a. Define elements and compounds. ​ Elements: Pure substances made of only one type of atom (e.g., Oxygen - O₂).  ​ Compounds: Pure substances composed of two or more elements chemically bonded (e.g., Water - H₂O). b. Define homogeneous and heterogeneous mixtures. ​ Homogeneous Mixture: Uniform composition throughout (e.g., saltwater). ​ Heterogeneous Mixture: Non-uniform composition (e.g., salad). 4. What is the difference between CO and Co? ​ CO: Carbon monoxide, a compound made of carbon and oxygen. ​ Co: Cobalt, a chemical element. How many and what kinds of atoms are in the compound NaHCO₃? ​ NaHCO₃ (Baking Soda): o​ 1 Sodium (Na) o​ 1 Hydrogen (H) o​ 1 Carbon (C) o​ 3 Oxygen (O) 5. Describe the Bohr-Rutherford model of an atom. The Bohr-Rutherford model represents the atom with a central nucleus containing protons and neutrons, surrounded by electrons orbiting in specific energy levels. For Sodium (Na): ​ Protons: 11 ​ Neutrons: 12 (Mass number - Atomic number = 23 - 11) ​ Electrons: 11 (equal to protons in a neutral atom). ​ Energy Levels: 2 in the first shell, 8 in the second shell, 1 in the third shell. 6. How can you find... a. Neutrons of an atom when you know the protons and mass? ​ Neutrons = Mass Number - Number of Protons. b. Mass of an atom when you know the atomic number and neutrons? ​ Mass = Atomic Number + Neutrons. c. What element it is when you know the mass and neutrons? ​ Subtract neutrons from the mass to find the atomic number, then refer to the periodic table. 7. Describe the charge and location for protons, neutrons, and electrons. ​ Protons: Positive (+), located in the nucleus. ​ Neutrons: Neutral (0), located in the nucleus. ​ Electrons: Negative (-), orbiting the nucleus in energy levels. 8. What are the properties of metals and non-metals? ​ Metals: Conduct electricity/heat, malleable, ductile, shiny, solid at room temperature (except mercury). ​ Non-Metals: Poor conductors, brittle, dull, can exist in solid, liquid, or gas form. 9. List the points of the particle theory of matter. 1.​ All matter is made of particles. 2.​ Particles are in constant motion. 3.​ Particles are attracted to each other. 4.​ Particles have spaces between them. 5.​ The speed of particles increases with temperature. 10. What is an ionic compound? Covalent compound? ​ Ionic Compound: Formed when electrons are transferred from one atom to another, creating ions (e.g., NaCl). ​ Covalent Compound: Formed when atoms share electrons (e.g., H₂O). 11. Calculate the protons, neutrons, and electrons for the following: a. ₁₉K: ​ Protons: 19 ​ Neutrons: Mass - Protons = 39 - 19 = 20 ​ Electrons: 19 b. ₁₇Cl⁻: ​ Protons: 17 ​ Neutrons: Mass - Protons = 35 - 17 = 18 ​ Electrons: 17 + 1 (extra electron due to negative charge) = 18. 12. What is the difference between a period and group in the periodic table? ​ Period: Horizontal row; elements have the same number of electron shells.  ​ Group: Vertical column; elements have the same number of valence electrons. 13. Name the 4 chemical families in the periodic table. a. Alkali Metals ​ Reactivity: Very reactive. ​ Valence Electrons: 1. b. Alkaline Earth Metals ​ Reactivity: Reactive but less than alkali metals. ​ Valence Electrons: 2. c. Halogens ​ Reactivity: Highly reactive non-metals. ​ Valence Electrons: 7. d. Noble Gases ​ Reactivity: Inert (non-reactive). ​ Valence Electrons: Full outer shell (usually 8). 14. For each of the following elements: a. Lithium and Oxygen ​ Chemical Formula: Li₂O ​ Name: Lithium oxide. b. Magnesium and Chlorine ​ Chemical Formula: MgCl₂ ​ Name: Magnesium chloride. c. Aluminum and Sulfur ​ Chemical Formula: Al₂S₃ ​ Name: Aluminum sulfide. 15. Write an example of each type of chemical reaction. a. Synthesis: 2H₂ + O₂ → 2H₂O​ b. Decomposition: 2H₂O → 2H₂ + O₂​ c. Single Displacement: Zn + 2HCl → ZnCl₂ + H₂​ d. Double Displacement: NaCl + AgNO₃ → NaNO₃ + AgCl​ e. Combustion: CH₄ + 2O₂ → CO₂ + 2H₂O Fam Memb Valenc Com Physica Chemi ily ers e mon l cal Numb ion properti proper er (see forme es ties definit d ion when below) reacti ng Alkali Li, Na, 1 +1 Soft, low React Metals K, Rb, melting, vigorously Cs, Fr shiny with acids, metals: water, conduct oxygen and heat and halogens. electricit The y reaction Alkali = with water Arabic for generates ashes. hydrogen Ashes are gas and a basic base. (opposite of acids)or alkaline. Alkaline Be, 2 +2 Harder, React with earth Mg, higher- acids, metals Ca, Sr, melting water, Ba, Ra metals: oxygen and conduct halogens, heat and but not electricit always as y violently as alkali metals. The reaction with water also generates hydrogen gas and a base, but unlike the alkali metal bases, these are not too soluble in water, just like mud or “earth”, hence their name. Halogens F, Cl, 7 -1 Some React with Br, I, are most At gases metals, and (Cl2 and form F2), diatomic liquid molecules. (Br2) F2 is so and reactive solids(I2, that it will At2) at attack room gases that temp. would not No other normally family is react such found in as Xe. all three states at room tempera ture. Poor conduct ors. Noble or He, 8 0 All Generally, "Inert Ne, Ar, gases at not gases" Kr, Xe, room chemically Rn tempera active. ture. None of the Poor noble conduct gases are ors. flammable. They will only react with strong electron muggers