Matter of shadows Flashcards
studying
Alloy
A mixture of 2 or more metals Common alloys are steel brass and bronze Gold jewelry is a alloy the amount of gold is called carats Each karat is 1/24 gold
Activation Energy
The minimum energy required to initiate a reaction
Anion
A negatively charged ion
boiling
A phase change from a liquid to a gas
Cation
A positively charged ion
Chemical change
A change that results in a new substance
Combustion
An exothermic chemical reaction ,burning
Compound
A substance made out of 2 or more different elements
condensation
The change from a vapor to a liquid
Covalent bond
A chemical bond formed when atoms share electrons
Decomposition
A chemical reaction in which the chemical reactants
break apart
Entropy
A quantitative measure of the disorder of a system.
Freezing
The change from a liquid to a solid
Gas
A phase of matter with no definite shape or volume.
Melting point
The temperature at which a solid changes into a liquid
