Amplify Unit 2 Chapter 3

Brain likes his tea with a lot of sugar. In fact, he likes 2 cups of sugar for every gallon of tea that he makes. Which of the following statements is true?

• Sugar is not soluble in tea and water.

• The sugar will dissolve faster if he puts ice in his tea after he makes it.

• The sugar will dissolve faster in hot tea than in iced tea.

• He should use sugar cubes instead of packets of sugar to make his tea because they dissolve faster.

Tags

NGSS.MS-PS1-4

Sally is doing an experiment about mixtures and solutions. Which of her ingredients will probably NOT dissolve in water?

• dirt

• salt

• koolaid mix

• sugar

Recall what happened to the dye and water molecules during chromatography.

As the water molecules passed through the food coloring, they attached to the dye molecules and made dye molecules grow so the dye traveled up the paper. The

molecules of blue dye traveled the most, so they went the highest. The molecules of the red dye traveled less, so they did not go as high.

What caused the water molecules to attach to the dye and travel up the paper?

• volume

• attraction

• push

• magnetism

_______ is what you can observe or measure about something that helps you identify or describe it.

• Atom

• Inference

• Property

• Matter

Tags

NGSS.5-PS1-3

Your teacher places a piece of paper on a desk and then uses a fan to blow air at the paper. The paper flies off the desk and flutters to the ground. Which statement best

describes what happened?

• The teacher moved the paper.

• The fan pushed the paper off the desk.

• The desk was not built to hold the paper.

• The fan moved the air, and the molecules of air pushed the paper off the desk.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

Priya's family makes cheese from milk. Priya says this is a physical change. Priya's mother says this is a chemical change. Who is correct, and why?

• Priya is correct. The cheese still contains milk.

• Priya is correct. The milk changes from liquid to solid.

• Priya's mother is correct. The cheese cannot be changed back into milk.

• Priay's mother is correct. The weight of the cheese is the same as the weight of the milk.

Tags

NGSS.MS-PS1-2

When the molecules of a solid are attracted to the molecules of a liquid, they

• stay clustered together as a solid.

• spread apart and mix together evenly.

• separate into layers.

• evaporate into the air.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When molecules of a solid aren't attracted to the molecules of a liquid they

• spread apart and mix together evenly.

• evaporate into the air.

• stay clustered together as a solid.

• separate into layers.

Alejandro left a box of crayons in a car on a hot day. He took the box to school where the air conditioner kept the air cool. Much later, he opened the box. Inside the box he found one large lump of wax, instead of many crayons. Which statement best describes what happened?

• The crayons lost some molecules.

• The crayons became a mixture in the air conditioning.

• The crayons became a solution and then changed weight.

• The crayons experienced physical changes from solid to liquid then back to solid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which two liquid molecules have similar properties and are mostly likely attracted to each other?

• water and oil molecules

• water and gasoline molecules

• water and vinegar molecules

• water and honey molecules