Chemical Reactions Ms. Nelson

What is the main purpose of the Wastewater Treatment Plant as shown in the diagram?

• To add new substances to wastewater

• To remove clean freshwater from wastewater

• To treat wastewater and produce clean freshwater

• To store wastewater indefinitely

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NGSS.MS-ETS1-3

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According to the lesson, how are new substances formed during the wastewater treatment process?

• By adding substances to clean water

• By removing substances from wastewater

• By treating wastewater and creating a chemical reaction

• By storing wastewater without treatment

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NGSS.MS-PS1-2

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What is a substance made of according to the lesson?

• A variety of different molecules

• A single kind of molecule

• Atoms from different elements

• A mixture of elements and compounds

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NGSS.MS-PS1-1

Is there evidence of a chemical reaction when ice melts?

• Yes, because the temperature changes.

• No, because only the physical state changes.

• Yes, because the texture changes.

• No, because the water molecules are rearranged.

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NGSS.MS-PS1-4

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Is melting ice an example of a chemical reaction?

• Yes, because new substances are formed.

• Yes, because the temperature changes.

• No, because only the physical state changes, not the chemical composition.

• No, because the ice disappears completely.

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NGSS.MS-PS1-2

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What happens in a chemical reaction according to the key concept?

• Substances are mixed but no new substances are formed.

• At least one new substance with different properties is formed.

• Substances are separated and original properties are enhanced.

• No substances are mixed and no new properties are observed.

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NGSS.MS-PS1-2

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Is there evidence of a chemical reaction when paint mixes?

• Yes, because the text states a new substance is formed.

• No, the text only describes a physical change in color.

• Yes, because the paint dries faster when mixed.

• No, because the paint separates into different layers.

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NGSS.MS-PS1-2

What happens when baking soda and vinegar are mixed?

• They change color

• They produce a gas, causing a foamy substance to bubble over the cup

• They form a solid substance

• No reaction occurs

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NGSS.MS-PS1-2

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What is an example of a chemical reaction according to the video?

• Paint Mixing Together

• Apples Turning Brown

• Ice Melting

• A Motor Cycle Engine

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NGSS.MS-PS1-2

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What is an example of a substance made of only one kind of molecule?

• Salt

• Water

• Air

• Soil

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NGSS.MS-PS1-1