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13 Cards in this Set

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  • Back
What is chemistry?
Chemistry is the study of matter and its changes.
Matter must have what 2 things.
mass and volume
What is the smallest particle of an element?
an ATOM
What is the smallest particle of a compound?
A MOLECULE
What is used to represent how many atoms are in a molecule?
Chemical Formulas
3H2
3 is the coefficient
2 is the subscript
What kind of composition do pure substances have?
fixed
What are pure substances?
elements and compounds
What are mixtures made of?
many different pure substances
What are 2 kinds of mixture>
heterogeneous and homogeneous mixtures
What is the difference between miscible and immiscible mixtures?
misible mixtures are able to dissolve with each other
immiscible are when two substances do not mix
What is a mixture which is able to dissolve with each other?
miscible
What is a mixture that is not able to mix
immiscible