5.6C Review and Quiz

Jon combines ingredients in a bowl to make ice cream. The solution weighs 65 grams. Then Jon freezes it and weighs it again. Which observation demonstrates that matter has been conserved?

• A. Both the physical state and the mass change.

• B. Both the physical state and the mass stay the same.

• C. The physical state changes, but the mass stays the same.

• D. The physical state stays the same, but the mass changes.

Padma measures the mass of beach sand and coarse salt. The sand’s mass is 4 grams, and the salt’s mass is 5 grams. If she combines the sand and the salt in 3 grams of water, what will be her observation for the new mixture’s mass?

• A. It will be 4 grams because the salt will dissolve, adding no mass to the solution.

• B. It will be 12 grams because the three substances will each add mass to the solution.

• C. It will be 5 grams because the sand sinks to the bottom, adding no mass to the solution.

• D. It will be 9 grams because the salt will absorb the water, causing the water to add no mass to the solution.

Rita has a jar with 15 grams of salt and 25 grams of water shaken together. If she boils the water, what will happen to the solution, AND which tool and method should Rita use to prove the conservation of matter? Read the question carefully. Then write your answer on the lines provided.

4. Belinda combines milk and ice cream with different ingredients to make flavored milkshakes. She uses a scale to measure each ingredient’s mass so that she can compare the mixtures before and after they are mixed. Which new measurements indicate that matter was conserved when she combined the ingredients?

   Write the letter of ONE correct answer in each box. Not all answers will be used.

Rita has a jar with 15 grams of salt and 25 grams of water shaken together. If she boils

the water, what will happen to the solution, AND which tool and method should Rita

use to prove the conservation of matter?

Read the question carefully. Then write your answer on the lines provided.