Podcast
Questions and Answers
Match the following spheres with their descriptions:
Match the following spheres with their descriptions:
Hydrosphere = All of the water on the planet Atmosphere = Layer of gases around the planet Lithosphere = Solid surface Biosphere = Place where organisms are living
Which process involves nitrates in the soil being converted back into nitrogen gas?
Which process involves nitrates in the soil being converted back into nitrogen gas?
Herbivores are organisms that consume other animals.
Herbivores are organisms that consume other animals.
False (B)
The __________ cycle involves the movement of water through evaporation, precipitation, and other processes.
The __________ cycle involves the movement of water through evaporation, precipitation, and other processes.
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Describe one way humans have produced pollution that has impacted ecosystems.
Describe one way humans have produced pollution that has impacted ecosystems.
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When a substance like table salt dissolves in water, this is considered a ______ change.
When a substance like table salt dissolves in water, this is considered a ______ change.
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Which of the following describes what happens when steel rusts?
Which of the following describes what happens when steel rusts?
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Describe the role of the turbine, stator and rotor in power generation.
Describe the role of the turbine, stator and rotor in power generation.
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A family on the periodic table refers to different horizontal rows of elements.
A family on the periodic table refers to different horizontal rows of elements.
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Which of the following is the correct description of malleability?
Which of the following is the correct description of malleability?
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Qualitative properties involve numerical measurements, while quantitative properties describe observations using the five senses.
Qualitative properties involve numerical measurements, while quantitative properties describe observations using the five senses.
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If a student is conducting an experiment to determine which paper airplane model flies the farthest, what would the 'model of plane' variable represent?
If a student is conducting an experiment to determine which paper airplane model flies the farthest, what would the 'model of plane' variable represent?
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The WHMIS symbol that indicates a material is capable of catching fire is the ______ symbol.
The WHMIS symbol that indicates a material is capable of catching fire is the ______ symbol.
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Match the following terms with their definitions:
Match the following terms with their definitions:
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A metal has a volume of 36.7 mL and a mass of 290 g. What is its density ($density = mass / volume$)?
A metal has a volume of 36.7 mL and a mass of 290 g. What is its density ($density = mass / volume$)?
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Melting ice is an example of a chemical change because the substance's state is altered.
Melting ice is an example of a chemical change because the substance's state is altered.
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The property of a liquid that describes how thick or thin it is, is known as its ______.
The property of a liquid that describes how thick or thin it is, is known as its ______.
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Which of the following energy sources is considered carbon neutral because plants absorb carbon dioxide?
Which of the following energy sources is considered carbon neutral because plants absorb carbon dioxide?
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Hydroelectric dams do not have any impact on fish migration.
Hydroelectric dams do not have any impact on fish migration.
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The process of using heat from the ground to warm water in pipes is called ___________ energy.
The process of using heat from the ground to warm water in pipes is called ___________ energy.
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If a light bulb uses 180 kW of energy to produce 60 kW of light, what is its efficiency in percent? Show your work.
If a light bulb uses 180 kW of energy to produce 60 kW of light, what is its efficiency in percent? Show your work.
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Match the following energy sources with their environmental impact:
Match the following energy sources with their environmental impact:
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List four ways a circuit can be opened.
List four ways a circuit can be opened.
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What voltage would each bulb receive if a power source gives off 12 V and there are 4 bulbs in parallel?
What voltage would each bulb receive if a power source gives off 12 V and there are 4 bulbs in parallel?
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Electrical charge can be built up by induction and by ________.
Electrical charge can be built up by induction and by ________.
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Study Notes
Scientific Equipment and Function
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Bunsen burner (4 steps): A gas-fueled laboratory burner, used for heating. Has different stages.
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Beaker: A cylindrical glass container with a wide mouth, used to hold and mix liquids.
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Test tubes: Small, cylindrical glass tubes typically used for holding and testing small amounts of chemicals or solutions.
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Graduated cylinder: A tall cylinder marked with volume measurements in increments, used to accurately measure liquid volume.
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Retort stand: A metal tripod-like frame that supports other pieces of laboratory equipment.
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Clamp/wire gauze: Metal clamps and wire gauze for holding and supporting glassware and materials
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Retort stand attachments: clamps, rings, and other components used to hold or secure items on a retort stand e.g., beakers, flasks
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Goggles/aprons and gloves: Personal protective equipment to prevent chemical splashes and spills.
WHMIS Symbols
- Skull and crossbones: Indicates a poisonous substance.
- Lightning: Indicates a health hazard.
- Dead fish: indicates a danger to aquatic life/water pollution.
Variables (Independent, Dependent, and Controlled)
- Independent variable: A factor that is deliberately changed by the researcher.
- Dependent variable: A factor that is measured as a result of the independent variable.
- Controlled variable: A factor that is kept the same throughout the experiment to ensure that any changes are due only to the independent variable.
Paper Plane Experiment
- Variable: distance covered (dependent), material of plane (independent), wind speed (controlled) and mass of plane (controlled)
Properties of Materials
- Clarity: Transparent or translucent qualities of materials (Example: a clear glass).
- Colour: Red, blue, green...
- State (of matter): Solid, liquid, or gas
- Viscosity: Thick or thin liquids
- Ductility: Ability to be pulled into wires,
- Malleability: Ability to be hammered into sheets
- Luster: Shiny or dull appearance of a material
- Hardness: Ability to resist scratching
Properties of Chalk
- Solid, Opacity, White, Soft
Density Calculations
- Density = mass/volume
- Units are typically g/mL or g/cm3
Qualitative and Quantitative Properties
- Qualitative properties describe qualities or characteristics, e.g., color, texture, luster.
- Quantitative properties identify aspects with numerical values, and are measured e.g., mass, volume, density.
Determining Density
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Solids: Measure mass with balance and volume with graduated cylinder (for regular shapes). For irregularly shaped solids volume of water displaced or volume by fluid displacement.
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Liquids: Measure volume of liquid in graduated cylinder; measure mass with balance,
Types of Changes (Chemical vs. Physical)
- Chemical changes alter the substance's chemical composition. Example: Burning, rusting.
- Physical changes do not alter the substance's chemical composition Example: Dissolving, melting.
Periodic Table Trends
- Elements in the same column (group/family) have similar properties (valence electrons).
- Elements in the same row (period) have increasing number of electrons in outer shell (atomic number) and are not similar in properties.
Power Generation
- Turbine, stator, and rotor: elements that are involved in generating power.
Types of Generation (Energy)
Different ways that electricity is generated e.g. fossil fuels, geothermal, hydro, nuclear, wind, solar.
Light Bulb Efficiency
- Efficiency = (useful energy output/total energy input)* 100
Electricity Cost Calculation
- Cost calculation procedure for electricity.
Static Electricity Concepts
- Charging of fur or ebonite
- Attraction of positive and negative charges
- The concept of flow due to a difference in charge
Circuit Diagrams
- Component Schematic diagrams
- Types of electrical circuits
- Parallel and series connections
Environmental Concepts (Ecosystems)
- Interconnectedness of biotic (living) and abiotic (non-living) components in an ecosystem
Food Web Analysis
- Herbivores: Consumers that eat plants.
- Prey of hawk: Organisms that the hawk eats.
- Organisms in the first tropic level: Producers/autotrophs
Water Cycle
- Overview of the water cycle and its processes
Carbon Cycle
- Overview of the carbon cycle and its processes
Nitrogen Cycle Processes
- Nitrogen fixation: Conversion of atmospheric nitrogen into usable forms.
- Denitrification: Conversion of nitrates back to nitrogen gas.
- Decomposition: Breakdown of dead organisms to release nitrates.
- Haber process: An industrial method of nitrogen fixation
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Description
Test your knowledge about essential scientific equipment and WHMIS symbols used in the laboratory. This quiz covers the function of tools like Bunsen burners, beakers, and protective gear, along with key safety symbols. Perfect for students learning about laboratory practices and safety protocols.
