Science Unit 1 Review

Which of the following is not a sign of a chemical change?

• change in temperature

• formation of a solid

• change in shape

• formation of bubbles

Tags

NGSS.MS-PS1-2

What do freezing and condensing have in common?

• They both involve the removal of heat.

• They both involve the addition of heat.

• They both start as a liquid.

• They both end as a solid.

Tags

NGSS.MS-PS1-4

When water evaporates from a puddle, it seems to disappear. Which of the following is true?

• Water evaporating from a puddle moves to a different puddle.

• Water evaporating from a puddle becomes water vapor and still exists in the air.

• Water evaporating from a puddle becomes solid water.

• Water evaporating from a puddle no longer exists.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

True or False:

 The particles of a liquid have more energy than the particles of a solid.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which process will make salt dissolve in water the quickest?

• Use cold water, small particles, and do not stir.

• Use warm water, large particles, and stir.

• Use warm water, small particles, and stir.

• Use cold water, large particles, and do not stir.

Tags

NGSS.MS-PS3-4

Trevor had a cup of lemonade that had ice in it. The drink, including the cup, lemonade, and ice, had a mass of 250 grams. After a while, all the ice melted. What happened to the mass of the cup with lemonade.

• The mass of the cup of lemonade will be greater than the original mass since the ice melted.

• The cup of lemonade will overflow since the mass is now greater.

• The mass of the cup of lemonade will be the same as the original mass.

• The mass of the cup of lemonade will be less than the original mass since the ice melted.

Tags

NGSS.MS-PS1-5

Four students were creating a procedure to dissolve salt into water the quickest. Which student’s procedure will result in the fastest dissolving time? 

• Jamie says, “use cold water, add salt with small particles, then stir”

• Anne says, “use hot water, add salt with small particles, and stir”

• Lisa says, “use cold water, add salt with large particles, and don’t stir”

• Melanie says, “use hot water, add salt with large particles, and don’t stir”

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following does not affect the rate at which a solid dissolves in liquid? 

• Stirring the solution

• Particle size of the solid

• Temperature of the liquid

• The color of the liquid

Which of the following best describes the law of conservation of mass?

• Matter can only change mass if it is conserved.

• Matter can only be destroyed within a closed system.

• Matter cannot be created or destroyed in a closed system.

• Matter can only be created if a physical change is involved.

Tags

NGSS.MS-PS1-5

Gillian was trying to explain the melting point to a friend.  Which 3 characteristics could she use to explain the melting point.

• The melting point of a substance is the same temperature as the freezing point.

• The melting point changes a substance from a solid to a liquid.

• The melting point of a substance changes if it starts as a liquid.

• The melting point involves adding heat to a solid.

• The melting point changes a substance from a liquid to a solid.

Tags

NGSS.MS-PS1-4