unit 2 list chemistry Flashcards
1
Q
atom
A
An atom is the smallest unit of matter, considered the basic building block of all substances, composed of even smaller particles called protons
2
Q
molecules
A
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
3
Q
substances
A
a pure form of matter
4
Q
homogeneous mixture
A
a mixture that has been mixed together so well that the different parts will not settle out on their own
5
Q
heterogeneous mixture
A
a mixture in which the composition is not uniform throughout the mixture.
6
Q
chemical properties
A
any of a material’s properties that becomes evident during, or after, a chemical reaction
7
Q
A
8
Q
A
