NGSS.MS-PS1-2

Indicators change color in the presence of a(n) _______________.

• acid or base
• buffer
• water molecule
• ester

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NGSS.MS-PS1-2

Limestone reacting with an acid (such as vinegar) is an example of 

• mechanical weathering
• chemical weathering
• erosion
• deposition

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NGSS.MS-PS1-2

Which of the following is a chemical change?

• Cutting bread

• Slicing carrots

• Melting butter

• Soured milk

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NGSS.MS-PS1-2

Litmus paper can tell you if a solution is acidic, neutral or basic by changing color when placed in a solution. If you test a acid with litmus paper, it will turn ____________.

• purple

• red

• blue

• pink

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NGSS.MS-PS1-2

When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?

• Physical change: state of matter

• Chemical change: precipitate

• Physical change: freezing

• Chemical change: rust

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NGSS.MS-PS1-2

Peyton & Michael take two clear liquids and mix them together. When observing the final product, you notice a yellow solid has formed. What is the term for the solid that is formed as a result of a chemical change?

• condensate

• evaporate

• precipitate

• sublimate

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NGSS.MS-PS1-2

Baking a cake is a...

• Physical Change

• Chemical Change

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NGSS.MS-PS1-2

Read the following two statements carefully and choose the correct options.

(i) Cutting of wood is considered as a chemical change

(ii) Crystallization is a physical change

• Statement (i) is correct while statement (ii) is incorrect

• Statement (ii) is correct while statement (i) is incorrect.

• Both statements are correct

• Both statements are incorrect

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NGSS.MS-PS1-2

Every minute we are creating a new substance when we inhale oxygen since inside the body there is a chemical reaction. What is the new substance created when we exhale breath? (6.5C)

• Calcium carbonate

• carbon

• carbon dioxide

• dioxide

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NGSS.MS-PS1-2

Which observation(s) might be used as evidence that a chemical reaction occurred?

• Color change

• Odor change

• change in temperature

• All of the above

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NGSS.MS-PS1-2