(9th) Physical Science Fall Semester Test

Front

T or F: Water boils at 100 degrees Celsius. This is a chemical property of water.

Back

False

Front

__________________ properties can be observed only when substances are changing into different substances.

Back

Chemical

Front

How many different elements are in baking soda?

Back

4

Front

How many atoms make up a single molecule of vinegar?

Back

7

Front

If a material contains three different elements chemically bonded together, it is a(an) ______________.

Back

Compound

Front

Which of the following can be separated physically? Mixture, Pure Substance, Compound, Molecule

Back

Mixture

Front

Which of the following is a mixture? Sand, Carbon dioxide, Silicon dioxide, Silicon

Back

Sand

Front

Which of the following is a physical change? sawing a piece of wood in half, rust forming on an iron fence, burning a piece of wood, a copper roof changing color from reddish-brown to green

Back

sawing a piece of wood in half

Front

A material that is malleable and conducts electricity is most likely

Back

a metal

Front

Which of the following is a clue of a chemical change?
- balls of wax form when melted wax is poured into ice water
- Salt molecules become surrounded by water molecules during dissolving
- a gas forms when vinegar and baking soda are mixed
- gas bubbles form in boiling water

Back

a gas forms when vinegar and baking soda are mixed