The Law of the Conservation of Matter & Rates of Dissolving

1.  Trisha and her classmates were reading in their science books about matter. Each student was asked to write the definition of matter. When their teacher checked their notes, she said only Trisha had correctly defined matter. Knowing that, which definition did Trisha write?

• Matter is anything that has mass and takes up space.

• Matter is anything that has mass and does not take up space

• Matter does not have mass but does take up space.

• Matter neither takes up space nor has mass.

Tags

NGSS.MS-PS1-5

2. When sugar dissolves in tea, the result is a __.

• concentrate

• solvent

• solution

• solute

3. Look at the list:  Mixture = 1) Salt and pepper; 2) cereal and milk; 3) Smores Cereal, &  4) ??????                              Solutions = 1) lemonade, sugar & water;  

2) Bleach & water;  3) Kool-Aid.  What item below belongs with mixtures?

• fruit salad

• salt water

• sweet tea

• carbonated drinks, like soda

4. If Shay is trying to get her solute to dissolve faster, what is one way that she can make this happen?

• put the solute in cold water

• do not stir the solute

• put in bigger pieces of solute

• put the solute in hot water

Tags

NGSS.MS-PS1-4

Josh was measuring the volume of a rock using water displacement. The original water level measured 50 mL. He placed the rock into the graduated cylinder and the water rose to 65 mL. What was the volume of the rock?

• 50 mL

• 65 mL

• 10 mL

• 15 mL

Aaron was measuring the volume of a box. The measurements were length: 5 inches, width: 2 inches, and height: 3 inches. What is the volume of the box?

• 3 cubic inches

• 30 cubic inches

• 10 cubic inches

• 100 cubic inches

7.  Maxine is making hot chocolate. She put some very hot milk in a cup and then put in the chocolate syrup. What is the best way to make the chocolate syrup dissolve more quickly?

• put some ice in the mixture

• use cold milk

• quickly stir the mixture of hot milk and chocolate syrup

• stir the chocolate syrup before putting it in the milk

8. Bill and Ted fill two cups with water. They use hot water in one cup and cold water in the other cup. Next, they each stir a spoon of sugar into each cup.     In which cup will the sugar dissolve more slowly?

• the sugar will not dissolve in either cup

• the sugar dissolves more slowly in the cold water

• the sugar dissolves more slowly in the hot water

• the sugar dissolves equally in both hot and cold water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

9.  Jerry bought a 4 pound bag of ice. He put it in a bucket that weighed 1 pound. The next day he noticed that the ice had melted in the bucket. When Jerry weighed the bucket with the melted ice, what will it most likely weigh?                          

• 3 pounds

• 4 pounds

• 5 pounds

• 6 pounds

Tags

NGSS.MS-PS1-2

10.  On a hot summer day chocolate candy can melt in your pocket.  How can you get the chocolate to return to a solid?

• add heat

• leave it in your pocket

• cool in the refrigerator

• leave it outside on a summer day

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5