Changes in matter

Which of these changes can be reversed?

• Mixing and baking cake batter

• Freezing orange juice into ice pops

• Burning wood into a camp fire

• Mixing flour and water to make paste

Which of these changes cannot be reversed?

• Dissolving a teaspoon of salt in water

• Melting chocolate on a camp fire

• Freezing orange juice into ice pops

• Mixing and baking cookie dough

Look at the picture. How is some of the water in the pot changing?

• It is changing from a solid to a gas.

• It is changing from a liquid to a gas.

• It is changing from a solid to a liquid.

• It is changing from a liquid to a solid.

Tags

NGSS.MS-PS1-4

Look at the picture. The eggs are heated until they are hard boiled. Is the change to the eggs reversible?

• Yes, they can be made to solids again.

• No, they cannot be made into solids again.

• Yes, they can be made into liquid again.

• No, they cannot be made into liquid again.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

How did the wood change?

• It is no longer a wood.

• It is no longer matter.

• It has a different shape.

• It is no longer a solid.

Tags

NGSS.MS-PS1-2

How can you change the eggs, butter, milk, sugar, and flour into a cake?

• Cut and mold them

• Mix and bake them

• Fold and bend them

• Tear and freeze them

Which properties does the whole object share with its parts?

• Size

• Shape

• Color

• State of matter

Which of these materials was used to make this object?

• 
• 
• 
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Tags

NGSS.MS-PS1-3