Unit 3- Properties of Matter

Front

What is the definition of density?

Back

Density is the mass of an object divided by its volume, typically expressed in grams per cubic centimeter (g/cm³).

Front

How do you calculate density?

Back

Density = mass / volume.

Front

What happens to the density of a liquid if its volume is doubled while keeping the mass constant?

Back

The density remains the same.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the gravitational force acting on that object.

Front

Why is it important to distinguish between mass and weight in scientific investigations?

Back

Because mass and weight affect the results of experiments differently.

Front

If two objects have the same volume but different masses, what can be inferred about their densities?

Back

They have different densities.

Front

What is the density of a block of metal with a mass of 200 grams and a volume of 50 cm³?

Back

The density is 4 g/cm³.

Front

What units are commonly used to express density?

Back

Density is commonly expressed in grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).

Front

What is the relationship between mass, volume, and density?

Back

Mass is directly proportional to density and volume; as mass increases, density increases if volume remains constant.

Front

How does temperature affect the density of most substances?

Back

Generally, as temperature increases, the density of most substances decreases due to expansion.