Calculating density, volume & conservation of mas

Calculating Density
Density=mass/volume

Multiple Choice

A liquid has a mass of 50 g and a volume of 25 cm³. Calculate its density.

• 2 g/cm³

• 100 g/cm³

• 10 g/cm³

• 0.5 g/cm³

Multiple Choice

What is the density of a plastic ball that has a volume of 6 cm3 and a mass of 12g?

• 2g/cm3

• 72g/cm3

• .5g/cm3

• 4mL

Calculating Volume
Volume= length x width x height

Multiple Choice

Find the volume.

• 55 yd³
• 121 yd³
• 22 yd³
• 330 yd³

Multiple Choice

What is the volume of this cube?

• 9 units³
• 27 units³
• 9 units²
• 27 units²

Conservation of Matter

​The Law of Conservation of Mass states that mass can not be created or destroyed, only conserved. Unless evaporation occurs, the amount of matter you start with should equal the amount you end with.

Multiple Choice

Susan makes a solution of sugar, lemon juice, and water. She uses 15 grams of sugar, 10 grams of lemon juice, and 50 grams of water. What is the total mass of her drink?

• 75 grams
• 80 grams
• 60 grams
• 100 grams

Multiple Choice

Saturday night, Jason's brother scoops out 80 grams of ice cream but forgets to eat it and it melts. What is the mass of the melted ice cream?

• 80 grams
• 100 grams
• 90 grams
• 70 grams

Open Ended

Albert and Jean are both boiling water for pasta. They start with 200 grams of water. After the water begins to boil, they each add 5 grams of salt and 50 grams of pasta. Albert puts a lid on his pasta. Jean does not. After 5 minutes, they compare the total mass of their pasta, water, and salt. Albert's total mass is 255 grams. Jena's total mass is 220 grams. Why is it different?