Exam 1 Review

Which of the following is a pure substance?

• Air

• Soda

• Salt water

• Oxygen

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

• Chocolate Chip Cookie

• Brass

• Salt water

• Iron

This picture represents an:

• Element

• Compound

• Mixture

Tags

NGSS.MS-PS1-1

This picture represents a:

• Element

• Compound

• Mixture

Tags

NGSS.MS-PS1-1

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

• A piece of wood burned

• The popsicle melted

• The puddle evaporated

• The apple was cut in half

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• The bread grew mold on it

• Your bike rusted

• The Statue of Liberty turned green over time

• Water vapor condensed into liquid droplets

Which of the following is a chemical property?

• A metal is not magnetic

• A substance melts at 200°C

• A substance rusts when it is exposed to air and water

• An object floats in water

When a gas turns into a liquid it is called ___________.

• Evaporating

• Melting

• Sublimation

• Condensation

Tags

NGSS.MS-PS1-4

What is 1.06 x 10⁴ in standard notation.

• 10,600

• 0.000106

• 0.0106

• 106

What is 0.00003007 in scientific notation?

• 3.007 x 10⁵

• 3.007

• 3.007 x 10⁴

• 3.007 x 10^-5