Exploring Mass, Volume, and Density

Calculate the density of an object with a mass of 150 grams and a volume of 50 cm³.

• 2 g/cm³

• 3 g/cm³

• 4 g/cm³

• 5 g/cm³

If the density of a substance is 8 g/cm³ and the volume is 10 cm³, what is the mass?

• 80 g

• 70 g

• 60 g

• 50 g

An object has a mass of 200 grams and a density of 4 g/cm³. What is its volume?

• 25 cm³

• 50 cm³

• 75 cm³

• 100 cm³

Explain how you would use a triple beam balance to measure the mass of an object.

• Place the object on the pan and adjust the riders until the pointer is at zero.

• Place the object on the pan and read the mass directly from the scale.

• Place the object on the pan and adjust the riders until the pointer is at the maximum.

• Place the object on the pan and adjust the riders until the pointer is at the minimum.

Discuss the law of conservation of mass and provide an example.

• Mass is created during a chemical reaction, such as burning wood.

• Mass is destroyed during a chemical reaction, such as rusting iron.

• Mass is neither created nor destroyed during a chemical reaction, such as water evaporating.

• Mass is both created and destroyed during a chemical reaction, such as photosynthesis.

Define volume and describe how it can be measured for a liquid.

• Volume is the amount of space an object occupies, and it can ALWAYS be measured using a ruler.

• Volume is the amount of space an object occupies, and it can be measured using a graduated cylinder.

• Volume is the amount of matter in an object, and it can be measured using a balance.

• Volume is the force of gravity on an object, and it can be measured using a scale.

A metal cube has a side length of 3 cm and a mass of 81 grams. Calculate its density.

• 3 g/cm³

• 9 g/cm³

• 27 g/cm³

• 1 g/cm³

A liquid has a density of 1.2 g/cm³. If you have 100 cm³ of this liquid, what is its mass?

• 120 g

• 100 g

• 80 g

• 60 g

A rock has a mass of 500 grams and a density of 2.5 g/cm³. What is its volume?

• 200 cm³

• 250 cm³

• 300 cm³

• 350 cm³

Describe a scenario where the law of conservation of mass is demonstrated in a closed system.

• A candle burning in an open room.

• A sealed container with a chemical reaction occurring inside.

• Water boiling in an open pot.

• Ice melting in a glass.