Reactions

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

• water freezes to form ice

• sugar dissolves in water

• gasoline burns in a car engine

• a piece of metal expands when it is heated

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• rusting of a bicycle

• painting a house

• washing a dog

• tearing up a newspaper

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which one shows that a chemical reaction has occurred?

• dissolving

• melting

• formation of a gas

• bending

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of change occurs when a new substance is formed that has different properties from the original substances?

• chemical change

• nuclear change

• physical change

• mutation

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

a copper penny turning greenish after a few years.

• Chemical Change

• Physical Change

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NGSS.MS-PS1-2

In a ___________change, a substance changes into a different substance.

• Physical

• Chemical

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

During a reaction, atoms are

• created

• destroyed

• neither created or destroyed - just rearranged

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NGSS.MS-PS1-5

a substance that is formed as the result of a chemical reaction is called

• Product

• Reactant

• Starters

• Enders

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NGSS.MS-PS1-5

A chemical reaction is when...

• Atoms and molecules are destroyed

• Atoms and molecules are created

• Atoms and molecules break apart and regroup to form new products

• Atoms and molecules go on vacation and relax a little

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which chemical equation matches the model shown?

• 3C + 4O --> 3CO2

• 3C + 2O2 --> 3CO2

• C3 + 4O --> 3CO6

• C3 + 2O2 --> 3CO6

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5