Science chemical changes review

Which of the following happens to a material when it goes through a chemical change?

• The substance changes size.

• The substance changes state.

• The substance changes shape.

• The substance changes into a new substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In which of the following examples would you see a chemical change occur?

• Candle wax melting

• Lighting a match

• Salt dissolving in water

• Water freezing

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

You wake up in the morning to the smell of bacon. Which evidence supports the conclusion that a chemical change is happening?

• There is a change in color.

• There is a change in state.

• There is a gas produced.

• There is an odor produced.

Tags

NGSS.MS-PS1-2

Which type of chemical change will produce smoke and ash?

• Burning

• Melting

• Rotting

• Rusting

Tags

NGSS.MS-PS1-2

Which of the following is the best way to explain how baking a cake or frying an egg is a chemical change?

• Both are changing size and shape.

• Heat is changing the texture of both substances.

• Heat is being added to both, causing a phase change.

• The end products of both cannot be reversed to their original forms.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following properties of an object can change when a substance undergoes a physical change?

• Color

• Odor

• Reactivity

• Size

Which of the following examples would be a physical change?

• Baking a cake

• Boiling water

• Burning wood

• Lighting fireworks

When heating up ice, what type of physical change will occur?

• It will condense.

• It will boil.

• It will freeze.

• It will melt.

Tags

NGSS.MS-PS1-4

Which of the following statements best describes why cutting grass is an example of a physical change?

• The grass is changing color, which means no new substance is forming.

• The grass is changing shape, which means a new substance is forming.

• The grass is changing size, which means no new substance is forming.

• The grass is rotting, which means a new substance is forming.

Jeremy left his bike outside overnight. When he woke up in the morning, there were water drops on the seat. When he went to ride his bike after lunch, he saw the water drops had disappeared. Which statement best describes what happened to the water?

• The energy from the sun caused the water drops to condense.

• The energy from the sun caused the water on the seat to boil.

• The energy from the sun cooled the water, causing it to evaporate.

• The energy from the sun heated the water, causing it to evaporate.

Tags

NGSS.MS-PS1-4

NGSS.MS-ESS2-4