Lesson Check: Physical and Chemical Changes

1) Determine which of the following scenarios would result in a chemical change.

• Ice cubes melting in a glass of water

• Wood burning in a campfire

• Power plants providing electricity to a city.

• Butter melting in a pan

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

2) Fill in the blanks using the available answer choices. Mixing food coloring and water is an example of a___________ change

• physical

• chemical

3) Which is an example of a physical change?

• a candle burning

• rust on a bicycle

• ice cream melting

• a firework exploding

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NGSS.MS-PS3-4

4) Which are signs that a chemical change has taken place? Select all that apply.

• change in mass

• formation of a gas

• formation of a mixture

• change in temperature

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NGSS.MS-PS1-2

5) Which of the following describes an example of a chemical change?

• a piece of glass breaking

• tearing a piece of paper

• shaping a piece of clay

• rust forming on a car

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

6) Fill in the blanks using the available answer choices. Baking soda and vinegar combined to make carbon dioxide is an example of a ____________ change.

• physical

• chemical

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

7) Which kind of change alters the shape of an object without changing what type of matter it is?

• chemical change

• physical change

• gradual change

• sudden change

8) Which is an example of a chemical change?

• a ball of clay is split in two

• a piece of wood is splintered

• a coin rusts

• salt and pepper are mixed

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

9) Jacob cut an apple and left it on the table while he finished his homework. When he returned to eat the apple, it looked like the apple in the picture. How did Jacob's apple change? Explain your reasoning.

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10) What is a physical combination of two or more substances that are blended together without forming a new substance?