Matter and Its Interactions Quiz A

Which property would best help you identify a pure substance in a laboratory investigation?

• Color

• Density

• Shape

• Volume

A student tests the solubility of two substances in water. Substance A dissolves mostly, while Substance B does not dissolve at all. What does this investigation show about the properties of these substances?

• Both are mixtures

• They have different solubility properties

• Both are pure substances

• They have the same density

Tags

NGSS.MS-PS1-2

Which of the following is a pure substance?

• Salt water

• Air

• Table salt (NaCl)

• Soil

Tags

NGSS.MS-PS1-1

A student claims that a mixture can be separated by physical means, but a pure substance cannot. Which evidence from an investigation would best support this claim?

• Salt dissolves in water

• Sand can be filtered from water

• Sugar tastes sweet

What happens to the motion of particles in a solid when thermal energy is added?

• The particles stop moving

• The particles move slower

• The particles move faster

• The particles disappear

Tags

NGSS.MS-PS1-4

Which model best explains what happens to water molecules as ice melts?

• The molecules move closer together and slow down

• The molecules move farther apart and speed up

• The molecules stop moving

• The molecules change into a different substance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is NOT a chemical property?

• Oxidation Number

• Flammability

• Reactivity

• Mass number

Which statement best describes a mixture?

• It has a fixed composition

• It can be separated by physical means

• It is made of only one type of atom

• It cannot be separated

A student is given a clear liquid and must determine if it is a pure substance or a mixture. Which investigation would provide the best evidence?

• Measure its temperature

• Test its boiling point and compare to known substances

• Observe its color

• Weigh the liquid

• The particles move slower

• The particles move faster

• The particles stop moving

• The particles become larger

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4