click below
click below
Normal Size Small Size show me how
Stack #174748
Question | Answer |
---|---|
The study of the properties of matter, and how matter changes | Chemistry |
Characteristic of a substance that can be observed without changing it into something else. Ex: density, melting point, boiling point. | Physical Property |
A measure of how heavy something is for its size. (Mass divided by volume) | Density |
Characteristic observed when a substance changes into a different substance. Ex: burning, rusting... | Chemical Property |
Substance that can't be broken into other substances by either physical or chemical means. Represented by a 1 or 2 letter SYMBOL.Ex: Hydrogen(H), Oxygen(O), Copper (Cu) | Element |
Two or more elements chemically combined in a set ratio. | Compound |
Uses symbols and numbers to show the ratio of elements in a compound Ex: H20,CO2 | Formula |
Two or more substances in the same place that are not chemically combined. Ex: milk, salt & pepper | Mixture |
A change in matter that form 1 or more new substances. Also called a CHEMICAL CHANGE. Ex: the reaction of sodium and water | Chemical Reaction |
Short, simple way to describe a chemical reaction using symbols and formulas instead of words. Ex: C + O2 = CO2 ( "=" should be an arrow) | Chemical Equation |
The substances you end up with in a chemical reaction to the LEFT of the arrow. | Reactants |
The substances you end up with in a chemical reaction to the RIGHT of the arrow. | Products |
The smallest part of an element | Atom |
A particle made up of 2 or more atoms | Molecule |
The force that holds atoms together. During a chemical reaction, chemical bonds are either formed or broken apart. | Chemical Bond |