Matter Test

Melting and freezing are examples of...

• physical changes in a substance

• chemical changes in a substance

• processes that both release heat

• processes that both absorb heat

How do we distinguish between an element and a compound?

• an element is made up entirely of one type of atom

• a compound is a substance that is made up entirely from one type of atom

• only a compound can form bonds between elements

• an element is made up of matter and a compound is not made up of matter

Rank the density from least dense to most dense.

• green, red, yellow

• red, green, yellow

• yellow, red, green

• green, yellow, red

which is a chemical property?

• mass of 300 g

• reacts with acid

• density of 37 g/mL

• red powder with silver specks

A child fills a bucket with ocean water (salt water) and sand. How is this mixture classified?

• homogeneous

• heterogeneous

• pure substance

• solution

Which box represents a gas?

• X

• Y

• Z

Which box represents a solid?

• X

• Y

• Z

Which box represents a liquid?

• X

• Y

• Z

In sugar water, sugar is added to water. The sugar is and water is considered which parts of the solution?

• sugar is solute; water is solvent

• sugar is solute; water is solvent

Which is a property of chemical changes?

• colorless

• flammable

• boiling at 78 fahrenheit

• density of .79 g/mL