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46 Cards in this Set
- Front
- Back
- 3rd side (hint)
What are two ways to classify matter?
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1) physical state
2) composition |
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What are the 3 states of matter?
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1) gas
2) liquid 3) solid |
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True or False: Gas has a fixed volume or shape.
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False.
Gas conforms to the shape of its container |
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True or False: A liquid has a distinct volume and a distinct shape.
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False.
Liquid has a distinct volume but not a distinct shape. |
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True or False: A solid has a definite form and a definite volume
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true.
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True or False: In a solid, molecules cannot move the slightest bit.
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False. Though they are in definite arrangements, molecules can wiggle slightly in their fixed positions
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What is a pure substance?
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A matter that has distinct properties and does not vary from sample to sample.
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h20 and salt are an example of a pure substance.
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What are Elements?
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a substance that cannot be decompsed into simpler substances
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True or False: Elements can be composed of more than kind one atom.
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False. Each element is composed of only one kind of atom.
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What are compounds?
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Compounds are composed of two or more elements
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What are mixtures?
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A combination of two or more substances in which each substance retains its own chemical identity
In a mixture, nothing changed chemically |
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How many elements are known?
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117
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What are the 3 elements that account for 90% of our bodies?
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1) Oxygen
2) Carbon 3) Hydrogen |
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True of False: Elements are unable to interact with one another to form compounds.
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False.
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What is the law of constant composition?
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the observation that the elemental composition of a pure compound is always the same.
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what is the other name for law of constant composition?
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law of definite proportions
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What are components of a mixture?
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the elements making up that mixture
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True or False: mixtures retain the same composition from sample to sample
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False
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Explain a heterogeneous mixture
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A mixture that is constantly changing composition, properties, and appearance
Ex. wood, rock |
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Explain a homogenous mixture
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Mixtures that are the same throughout.
Ex. Air |
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What are solutions?
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Homogenous mixtures
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True or False: Solutions are always liquid.
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False. Solutions can be solid, liquid or gas
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Identify the element C
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Carbon
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Identify the element F
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Flourine
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Identify the element H
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Hydrogen
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Identify the element I
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Iodine
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Identify the element N
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Nitrogen
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Identify the element O
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Oxygen
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Identify the element P
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Phosphorus
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Identify the element S
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Sulfur
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Identify the element Al
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Aluminum
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Identify the element Br
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Bromine
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Identify the element Ca
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Calcium
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Identify the element Cl
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Chlorine
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Identify the element He
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Helium
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Identify the element Li
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Lithium
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Identify the element Mg
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Magnesium
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Identify the element Si
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Silicon
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Identify the element Cu
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Copper
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Identify the element Fe
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Iron
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Identify the element Pb
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Lead
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Identify the element Hg
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Mercury
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Identify the element K
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Potassium
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Identify the element Ag
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Silver
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Identify the element Na
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Sodium
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Identify the element Sn
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Tin
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