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46 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
What are two ways to classify matter?
1) physical state
2) composition
What are the 3 states of matter?
1) gas
2) liquid
3) solid
True or False: Gas has a fixed volume or shape.
False.
Gas conforms to the shape of its container
True or False: A liquid has a distinct volume and a distinct shape.
False.
Liquid has a distinct volume but not a distinct shape.
True or False: A solid has a definite form and a definite volume
true.
True or False: In a solid, molecules cannot move the slightest bit.
False. Though they are in definite arrangements, molecules can wiggle slightly in their fixed positions
What is a pure substance?
A matter that has distinct properties and does not vary from sample to sample.
h20 and salt are an example of a pure substance.
What are Elements?
a substance that cannot be decompsed into simpler substances
True or False: Elements can be composed of more than kind one atom.
False. Each element is composed of only one kind of atom.
What are compounds?
Compounds are composed of two or more elements
What are mixtures?
A combination of two or more substances in which each substance retains its own chemical identity

In a mixture, nothing changed chemically
How many elements are known?
117
What are the 3 elements that account for 90% of our bodies?
1) Oxygen
2) Carbon
3) Hydrogen
True of False: Elements are unable to interact with one another to form compounds.
False.
What is the law of constant composition?
the observation that the elemental composition of a pure compound is always the same.
what is the other name for law of constant composition?
law of definite proportions
What are components of a mixture?
the elements making up that mixture
True or False: mixtures retain the same composition from sample to sample
False
Explain a heterogeneous mixture
A mixture that is constantly changing composition, properties, and appearance

Ex. wood, rock
Explain a homogenous mixture
Mixtures that are the same throughout.

Ex. Air
What are solutions?
Homogenous mixtures
True or False: Solutions are always liquid.
False. Solutions can be solid, liquid or gas
Identify the element C
Carbon
Identify the element F
Flourine
Identify the element H
Hydrogen
Identify the element I
Iodine
Identify the element N
Nitrogen
Identify the element O
Oxygen
Identify the element P
Phosphorus
Identify the element S
Sulfur
Identify the element Al
Aluminum
Identify the element Br
Bromine
Identify the element Ca
Calcium
Identify the element Cl
Chlorine
Identify the element He
Helium
Identify the element Li
Lithium
Identify the element Mg
Magnesium
Identify the element Si
Silicon
Identify the element Cu
Copper
Identify the element Fe
Iron
Identify the element Pb
Lead
Identify the element Hg
Mercury
Identify the element K
Potassium
Identify the element Ag
Silver
Identify the element Na
Sodium
Identify the element Sn
Tin