Chemistry I - Final Exam Review

A pure substance made of only one type of atom is called a(n) __________.

A pure substance made of two or more elements is called a(n) __________.

__________ are the smallest units of covalent (molecular) compounds.

The components in a mixture are chemically combined.

• True

• False

Homogeneous mixtures are also known as solutions.

• True

• False

Which of the following is an example of a homogeneous mixture?

• cereal and milk

• amoxicillin suspension

• box of Legos

• air

• pizza

Which of the following is not a physical property of matter?

• density = 1.0 g/mL

• yellow precipitate

• ability to oxidize

• boiling point = 373 K

• rough texture

Which of the following is an example of a chemical change?

• iron rusting

• splitting wood

• melting wax

• dissolving salt in water

• condensation

Which of the following scientists were responsible for the development of the periodic table?

• Ernest Rutherford

• John Dalton

• Amadeo Avogadro

• JJ Thomson

• Dimitri Mendeleev

A horizontal row in the periodic table is known as a(n) __________.