Chemistry Vocab Flashcards
A mixture of two or more metals
Alloy
A negatively charged ion
Anion
A phase change from a liquid to a gas (vapor)
Boiling
A positively charged ion
Cation
A change that results in a new substance
Chemical Change
An exothermic chemical reaction
Combustion
A substance composed of two or more different elements chemically combined in a definite ratio
Compound
The charge in a state of matter from a vapor to liquid
Condensation
A chemical bond formed when atoms share electrons
Covalent Bond
A chemical reaction in which the reactants are broken apart
Decomposition
A quantitative measure of the disorder of a system
Entropy
The change in phase of a substance from a liquid to a solid
Freezing
A phase of matter that has no definite shape or volume
Gas
The temperature at which a phase change occurs from a solid to a liquid
Melting Point
The minimum energy required to initiate a reaction
Activation Energy
