Chemical Reactions & Properties Quiz

What did we observe when the bath bomb was placed in water?

• It melted into a solid

• It produced bubbles of gas

• It froze into ice

• Nothing happened

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which tool did we use to measure the mass of a bath bomb before and after the reaction?

• Thermometer

• Ruler

• Balance scale

• Stopwatch

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NGSS.MS-PS1-5

Why did we test the gas by placing the flame both above and below the bottle opening?

• To check if the gas was lighter or heavier than air

• To test how hot the gas was

• To see if the bottle leaked

• To measure the size of the bath bomb

Which observation best supports the claim that a new substance was formed in the bath bomb reaction?

• The bath bomb dissolved

• The water stayed clear

• Gas bubbles appeared

• The bath bomb got smaller

Tags

NGSS.MS-PS1-2

During Lesson 4, we calculated density by measuring:

• Mass ÷ Volume

• Mass × Volume

• Volume ÷ Mass

• Temperature ÷ Mass

Which of these is an example of evidence that supports a claim in science?

• An opinion about the experiment

• A guess about what might happen

• Observations and measurements from the experiment

• The teacher’s explanation

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NGSS.MS-PS1-2

NGSS.MS-LS2-4

Explain why bubbles forming in a liquid do not always mean a new substance was made. Provide an example from class investigations.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

In Lesson 5, we tested the gas with a match flame. a) What did we observe? b) What property of the gas were we testing? c) How does this help identify the gas?

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NGSS.MS-PS1-2

What makes a mixture different from a substance? Give an example from our lessons.

A younger student sees the bath bomb fizz and says, “It just disappeared.” How would you use claim + evidence + reasoning to explain what actually happened?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5