Vacation or Conservation (of Mass): Crash Course Kids #23.1

What happens to matter during a physical change?

• a. It forms a new substance

• b. It changes its shape or form

• c. It evaporates

• d. It undergoes a chemical reaction

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How are reactants and products related in a chemical reaction?

• a. Reactants are what get changed

• b. Reactants are the new substance

• c. Products are things that react

• d. Products cause the reaction

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What is the conservation of mass scientific rule about?

• a. Mass can appear or vanish

• b. Mass is always changing forms

• c. Matter can be lost

• d. Mass is never made or lost

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NGSS.MS-PS1-5

How is the conservation of mass demonstrated in the video?

• a. By showing how matter can vanish

• b. By measuring the weight of sugar dissolved in water

• c. By separating reactants in a chemical reaction

• d. By converting sugar into cake

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What is a physical change in matter?

• a. It forms a new substance

• b. It changes the shape or form of matter

• c. It occurs when particles are rearranged

• d. It leads to the production of gas bubbles

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