Ch 2 Question Preview (ID: 4480)


Physical Science. TEACHERS: click here for quick copy question ID numbers.

Diamond is know for its
a) hardness
b) flammability
c) reactivity
d) all fo the answers are correct

A group of atoms that acts as a unit is called a(n)
a) mixture
b) molecule
c) element
d) compound

Which of the following is an element
a) salt
b) iron
c) nylon
d) sand

Which of the following is not a pure substance
a) element
b) molecule
c) compound
d) mixture

What is the density of a sample liquid that has a volume of 125 mL and a mass of 200 g?
a) 75 g/mL
b) 16 g/mL
c) 1.6 g/mL
d) 0.625 g/mL

Helium is used in balloons because it is
a) reactive with rubber
b) lighter than air
c) flammable
d) a colored gas

An object's volume can be found by dividing its mass by its
a) pressure
b) temperature
c) density
d) weight

Which of the following is not a physical property of iron
a) melting point
b) ability to rust
c) color
d) conductivity

Which property of a substance is not affected by physical changes?
a) reactivity
b) size
c) shape
d) position

The difference substances in a mixture
a) keep their properties
b) combine chemically
c) form new molecules
d) cannot be separated

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