Unit 1 Review: Introduction to Chemistry

Chemistry is the study of ______ and the changes it undergoes.

Density is a ______ property of a substance.

_______ always have uniform and definite compositions.

______ are never significant.

Hydrochloric acid is identified as:

• element

• compound

• heterogeneous mixture

• homogeneous mixture

phosphorous is identified as:

• element

• compound

• heterogeneous mixture

• homogeneous mixture

vanilla ice cream is identified as:

• element

• compound

• heterogenous mixture

• homogeneous mixture

sand and water is identified as:

• element

• compound

• heterogeneous mixture

• homogeneous mixture

burning paper

• chemical change

• physical change

ripping paper

• physical change

• chemical change