6th Grade Science Quarterly #3 Review

What is it called when a substance changes form but retains its original properties, without forming a new substance?

• evaporation

• melting

• physical change

• chemical reaction

Which of the following is an example of a chemical property of matter?

• flammability

• density

• mass

• volume

What type of change occurs when iron (Fe) reacts with oxygen (O2) to form iron oxide (rust)?

• a physical change.

• a chemical change.

• evaporation.

• condensation.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

During Condensation: Identify the phase of matter and a description of speed and position of the molecules.

• Liquid; molecules are close together and move slowly.

• Gas; molecules are far apart and move quickly.

• Solid; molecules are tightly packed and do not move.

• Plasma; molecules are ionized and move rapidly.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

During Condensation: Identify the phase of matter, state whether heat energy was added or taken away, and a description of speed and position of the molecules.

• Liquid; heat energy was taken away; molecules are closer together and move more slowly.

• Gas; heat energy was added; molecules are far apart and move quickly.

• Solid; heat energy was taken away; molecules are tightly packed and do not move.

• Plasma; heat energy was added; molecules are ionized and move rapidly.

Tags

NGSS.MS-PS1-4

Is boiling water an example of a physical or chemical change? Justify your answer.

• Physical change; the substance remains the same.

• Chemical change; new substances are formed.

• Physical change; the substance changes color.

• Chemical change; the substance burns.

Tags

NGSS.MS-PS1-4

What change occurred in the baggie after combining the ingredients?

• The baggie emitted light.

• The baggie slowly filled with air.

• The baggie became heavier.

• The baggie turned into a liquid.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What change was observed in the mixture's appearance after combining the substances?

• It became transparent.

• It evaporated.

• It shifted from clear to opaque.

• It stayed unchanged.

Tags

NGSS.MS-PS1-2

What kind of odor was emitted when the substances were combined in the baggie?

• A sweet aroma

• An unpleasant odor

• No odor

• A citrus scent

Tags

NGSS.MS-PS1-2

Based on the data table, which substance is a liquid at 25°C and a gas at 350°C?

• Tungsten

• Glycerin

• Mercury

• Water

Tags

NGSS.MS-PS1-4