The Nature of Matter

Daniel put water, sugar, and yeast into a balloon. Then he measured the mass of the balloon with a scale. He put the balloon in a warm place for 2 hours. Then he measured the mass again. He repeated his experiment three times to get more data. Predict how the mass of the balloon changed.

• Same mass

• More mass

• Less mass

• No more mass

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When an egg is cracked and put in a hot pan, it flows easily. After it cooks for a minute, the egg becomes solid. Why does the egg change?

• Breaking the shell is a physical change

  in the egg that makes it solid.

• Breaking the shell is a chemical

  change that makes the egg

  become solid.

• Heating the egg on the stove causes

  the egg to evaporate and become solid.

• Adding heat causes a chemical change

  in the particles of the egg that makes

  it solid.

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NGSS.MS-PS1-2

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The volume of a given mass of gas is one of its physical properties that can change. Which graph shows how the volume of a gas changes as the temperature of the

gas increases?

• A

• B

• C

• D

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NGSS.MS-PS1-4

Stacey tried to remove a metal lid from a glass jar, but the lid was too tight. Her mother held the jar so that the lid was in hot water for a minute. Then Stacey was able to turn the lid easily. How did the hot water make the lid easier to remove?

• Heating the glass jar made it expand, so the lid turned easily.

• As the metal lid was heated, it expanded so that it was not as tight.

• Water on the metal lid made it easier to hold, so it was easier to turn.

• The water corroded the metal, so it did not hold as tightly to the glass.

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NGSS.MS-PS1-4

Which of these statements best describes

the effect of temperature on chemical

changes?

• Chemical changes happen faster at higher temperatures

• Chemical changes happen slower at higher temperatures.

• Chemical changes are not affected by a change in temperature.

• Chemical changes happen only if the temperature is very hot.

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NGSS.MS-PS1-4

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​In which of the following solutions would the sugar dissolve the slowest?​

• Raw sugar, cold water

• Raw sugar, warm water

• White sugar, warm water

• White sugar, cold water

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What could she do to slow the dissolving rate of salt crystals in water?

• Crush the salt.

• Heat the solution.

• Cool the solution.

• Stir the solution.

Nadia has a mixture of oil and water. She wants to separate the mixture. How can she do this?

• Use a magnet to attract the oil.

• Pour the mixture through a sieve (filter)

• Evaporating the water from the mixture.

• Letting the oil float to the top and scooping it out.

Amy made picnic on the beach for her family. She brought a salad and lemonade. The wind blew getting sand in the salad and lemonade. Which of these best describes sand, a salad, and lemonade?

• Atom

• Solute

• Mixture

• Solution

The stuff that objects are made of; has mass and takes 

   up space.

• Energy

• Light

• Matter

• Heat

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