Chemical & Physical Changes (Benchmark #2)

Which is a physical change?

• freezing water

• burning wood

• boiling an egg

• mixing baking soda with vinegar

Tags

NGSS.MS-PS1-4

Which is true about physical changes?

• no new substance is made

• a new substance is created

• the properties of the substance change

• none of them are reversible

Which is a physical change?

• burning firewood

• baking a cake

• sodium and chlorine combining to make salt

• dissolving sugar in water

Which is a chemical change?

• 3. An iron nail becomes orange and flaky on the surface.

• 2. A wooden pencil is sharpened and breaks.

• 1. Long hair is cut and dried.

• 1. An ice cube melts and becomes a clear liquid.

Tags

NGSS.MS-PS1-2

Which is a chemical change?

• cracking an egg

• boiling an egg

• boiling water

• a popsicle melting

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which picture shows a physical change?

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Which of the following is an example of a chemical change?

• melting butter

• rusting of iron

• evaporating water

• chopping vegetables

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is true about chemical changes?

• they are always reversible

• they involve a change in state of matter only

• they result in the formation of new substances

• only the shape changes

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which process is a physical change?

• decaying fruit

• grinding coffee beans

• burning a candle

• burning toast

Which picture shows a chemical change?

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5