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Questions and Answers
What is the symbol for Hydrogen?
What is the symbol for Hydrogen?
- Li
- H (correct)
- He
- O
What is the element with the symbol He?
What is the element with the symbol He?
Helium
What element is represented by the symbol Li?
What element is represented by the symbol Li?
Lithium
Which element has the symbol Be?
Which element has the symbol Be?
What is the element represented by the symbol B?
What is the element represented by the symbol B?
Identify the element with the symbol C.
Identify the element with the symbol C.
What element corresponds to the symbol N?
What element corresponds to the symbol N?
What element is represented by the symbol O?
What element is represented by the symbol O?
Which element has the symbol F?
Which element has the symbol F?
What is the element represented by the symbol Ne?
What is the element represented by the symbol Ne?
Identify the element with the symbol Na.
Identify the element with the symbol Na.
What element corresponds to the symbol Mg?
What element corresponds to the symbol Mg?
Which element has the symbol Al?
Which element has the symbol Al?
What element is represented by the symbol Si?
What element is represented by the symbol Si?
Identify the element with the symbol S.
Identify the element with the symbol S.
What is the element represented by the symbol Cl?
What is the element represented by the symbol Cl?
Which element has the symbol P?
Which element has the symbol P?
What element is represented by the symbol Ar?
What element is represented by the symbol Ar?
Identify the element with the symbol K.
Identify the element with the symbol K.
What element corresponds to the symbol Ca?
What element corresponds to the symbol Ca?
Which element has the symbol Sc?
Which element has the symbol Sc?
What is the element represented by the symbol Ti?
What is the element represented by the symbol Ti?
What element is represented by the symbol V?
What element is represented by the symbol V?
Identify the element with the symbol Cr.
Identify the element with the symbol Cr.
What element corresponds to the symbol Mn?
What element corresponds to the symbol Mn?
What is the element represented by the symbol Fe?
What is the element represented by the symbol Fe?
Identify the element with the symbol Co.
Identify the element with the symbol Co.
What element corresponds to the symbol Ni?
What element corresponds to the symbol Ni?
Which element has the symbol Cu?
Which element has the symbol Cu?
What is the element represented by the symbol Zn?
What is the element represented by the symbol Zn?
Identify the element with the symbol Ga.
Identify the element with the symbol Ga.
What element corresponds to the symbol Ge?
What element corresponds to the symbol Ge?
What is the element represented by the symbol As?
What is the element represented by the symbol As?
Identify the element with the symbol Se.
Identify the element with the symbol Se.
What element corresponds to the symbol Br?
What element corresponds to the symbol Br?
Which element has the symbol Kr?
Which element has the symbol Kr?
What is the element represented by the symbol I?
What is the element represented by the symbol I?
Identify the element with the symbol Mo.
Identify the element with the symbol Mo.
What element corresponds to the symbol Ag?
What element corresponds to the symbol Ag?
What is the element represented by the symbol Au?
What is the element represented by the symbol Au?
Identify the element with the symbol Hg.
Identify the element with the symbol Hg.
What element corresponds to the symbol Pb?
What element corresponds to the symbol Pb?
What is the element represented by the symbol Xe?
What is the element represented by the symbol Xe?
Identify the element with the symbol W.
Identify the element with the symbol W.
What is the element represented by the symbol Pt?
What is the element represented by the symbol Pt?
What element corresponds to the symbol Sn?
What element corresponds to the symbol Sn?
1 kg = ?
1 kg = ?
1 uL = ?
1 uL = ?
1 nm = ?
1 nm = ?
1 MJ = ?
1 MJ = ?
What is the common unit of mass in the customary units?
What is the common unit of mass in the customary units?
What is the standard unit of mass in the SI system?
What is the standard unit of mass in the SI system?
What is the customary unit for length?
What is the customary unit for length?
What is the standard unit of length in the SI system?
What is the standard unit of length in the SI system?
What is the customary unit for volume?
What is the customary unit for volume?
What is the standard unit of volume in the SI system?
What is the standard unit of volume in the SI system?
What is the customary unit for temperature?
What is the customary unit for temperature?
What is the standard unit for temperature in the SI system?
What is the standard unit for temperature in the SI system?
Classify Oxygen as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify Oxygen as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify pure water as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify pure water as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify maple syrup as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify maple syrup as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify fruit salad as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify fruit salad as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify gold as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify gold as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify vitamin D as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify vitamin D as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify salt water as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify salt water as an element, compound, homogeneous mixture, or heterogeneous mixture.
Classify each of the following mixtures as homogeneous or heterogeneous: vegetable soup, tea, tea with ice and lemon slices, seawater, fruit salad.
Classify each of the following mixtures as homogeneous or heterogeneous: vegetable soup, tea, tea with ice and lemon slices, seawater, fruit salad.
Classify each of the following as pure substance or mixture: baking soda (NaHCO3), a blueberry muffin, ice (H2O), zinc (Zn), Trimix, oxygen, nitrogen, and helium in a scuba tank.
Classify each of the following as pure substance or mixture: baking soda (NaHCO3), a blueberry muffin, ice (H2O), zinc (Zn), Trimix, oxygen, nitrogen, and helium in a scuba tank.
Classify each of the following pure substances as an element or a compound: silicon (Si) chip, oxygen (O2), hydrogen peroxide (H2O2), rust (Fe2O3), methane (CH4) in natural gas.
Classify each of the following pure substances as an element or a compound: silicon (Si) chip, oxygen (O2), hydrogen peroxide (H2O2), rust (Fe2O3), methane (CH4) in natural gas.
Classify each of the following as a homogeneous or heterogeneous mixture: eye drops, hard boiled egg, ketchup.
Classify each of the following as a homogeneous or heterogeneous mixture: eye drops, hard boiled egg, ketchup.
Classify each type of matter as an element, a compound, a heterogeneous mixture, or a homogeneous mixture: Pt, toluene, OJ with pulp, hot tea, Ca, salt, soil, salt water, Al, CO2, air.
Classify each type of matter as an element, a compound, a heterogeneous mixture, or a homogeneous mixture: Pt, toluene, OJ with pulp, hot tea, Ca, salt, soil, salt water, Al, CO2, air.
Classify each of the following as a pure substance or a mixture: a soft drink, a cheese sandwich, salt substitute (KCl), propane (C3H8), an iron (Fe) nail.
Classify each of the following as a pure substance or a mixture: a soft drink, a cheese sandwich, salt substitute (KCl), propane (C3H8), an iron (Fe) nail.
Classify each of the following mixtures as homogeneous or heterogeneous: nonfat milk, chocolate-chip ice cream, gasoline, peanut-butter-and-jelly sandwich, cranberry juice.
Classify each of the following mixtures as homogeneous or heterogeneous: nonfat milk, chocolate-chip ice cream, gasoline, peanut-butter-and-jelly sandwich, cranberry juice.
Classify the following phase changes as requiring energy input or having energy output: freezing, melting, condensing, vaporizing, deposition, subliming.
Classify the following phase changes as requiring energy input or having energy output: freezing, melting, condensing, vaporizing, deposition, subliming.
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Study Notes
Elements and Their Symbols
- Element Hydrogen represented by symbol H
- Element Helium represented by symbol He
- Element Lithium represented by symbol Li
- Element Beryllium represented by symbol Be
- Element Boron represented by symbol B
- Element Carbon represented by symbol C
- Element Nitrogen represented by symbol N
- Element Oxygen represented by symbol O
- Element Fluorine represented by symbol F
- Element Neon represented by symbol Ne
- Element Sodium represented by symbol Na
- Element Magnesium represented by symbol Mg
- Element Aluminium represented by symbol Al
- Element Silicon represented by symbol Si
- Element Sulfur represented by symbol S
- Element Chlorine represented by symbol Cl
- Element Phosphorus represented by symbol P
- Element Argon represented by symbol Ar
- Element Potassium represented by symbol K
- Element Calcium represented by symbol Ca
- Element Scandium represented by symbol Sc
- Element Titanium represented by symbol Ti
- Element Vanadium represented by symbol V
- Element Chromium represented by symbol Cr
- Element Manganese represented by symbol Mn
- Element Iron represented by symbol Fe
- Element Cobalt represented by symbol Co
- Element Nickel represented by symbol Ni
- Element Copper represented by symbol Cu
- Element Zinc represented by symbol Zn
- Element Gallium represented by symbol Ga
- Element Germanium represented by symbol Ge
- Element Arsenic represented by symbol As
- Element Selenium represented by symbol Se
- Element Bromine represented by symbol Br
- Element Krypton represented by symbol Kr
- Element Iodine represented by symbol I
- Element Molybdenum represented by symbol Mo
- Element Silver represented by symbol Ag
- Element Gold represented by symbol Au
- Element Mercury represented by symbol Hg
- Element Lead represented by symbol Pb
- Element Xenon represented by symbol Xe
- Element Tungsten represented by symbol W
- Element Platinum represented by symbol Pt
- Element Tin represented by symbol Sn
Metric Prefixes and Their Values
- Deci (d) represents (10^{-1})
- Centi (c) represents (10^{-2})
- Milli (m) represents (10^{-3})
- Micro (u) represents (10^{-6})
- Nano (n) represents (10^{-9})
- Pico (p) represents (10^{-12})
- Femto (f) represents (10^{-15})
- Deka (da) represents (10^{1})
- Hecto (h) represents (10^{2})
- Kilo (k) represents (10^{3})
- Mega (M) represents (10^{6})
- Giga (G) represents (10^{9})
- Tera (T) represents (10^{12})
- Peta (P) represents (10^{15})
Unit Conversions
- 1 kg = (10^{3}) g
- 1 µL = (10^{-6}) L
- 1 nm = (10^{-9}) m
- 1 MJ = (10^{6}) J
Mass and Length Units
- Common unit of mass in the U.S. customary system: pound
- Standard unit of mass in SI units: kilogram
- Common length unit in the U.S. customary system: foot
- Standard length unit in SI units: meter
Volume Units
- Common volume unit in the U.S. customary system: quart
- Standard volume unit in SI units: cubic meter (m³)
Temperature Units
- U.S. customary temperature unit: Fahrenheit (F)
- Standard temperature unit in SI units: Kelvin (K)
Classification of Matter
- Oxygen is classified as an element.
- Pure water is classified as a compound.
- Maple syrup is classified as a homogeneous mixture.
- Fruit salad is classified as a heterogeneous mixture.
- Gold is classified as an element.
- Vitamin D is classified as a compound.
- Salt water is classified as a homogeneous mixture.
Classification of Mixtures
- Vegetable soup is classified as heterogeneous.
- Tea is classified as homogeneous.
- Tea with ice and lemon is classified as heterogeneous.
- Seawater is classified as homogeneous.
- Fruit salad is classified as heterogeneous.
Pure Substances vs. Mixtures
- Baking soda (NaHCO3) is a pure substance.
- A blueberry muffin is a mixture.
- Ice (Hâ‚‚O) is a pure substance.
- Zinc (Zn) is a pure substance.
- Trimix (oxygen, nitrogen, helium) in a scuba tank is a mixture.
Elements vs. Compounds
- A silicon (Si) chip is classified as an element.
- Oxygen (O2) is classified as an element.
- Hydrogen peroxide (Hâ‚‚Oâ‚‚) is classified as a compound.
- Rust (Fe₂O₃) is classified as a compound.
- Methane (CH4) in natural gas is classified as a compound.
Classification of Phase Changes
- Freezing has a net output of energy.
- Melting requires an input of energy.
- Condensing has a net output of energy.
- Vaporizing requires an input of energy.
- Deposition has a net output of energy.
- Sublimation requires an input of energy.
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