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15 Questions

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Density: Key Concepts

Created by

@HeavenlySilicon

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Questions and Answers

What is the definition of density?

The speed at which an object falls

The amount of mass in a given volume (correct)

The amount of space an object takes up

The temperature at which a substance melts

Which formula is used to calculate density?

Density = Mass × Volume

Density = Volume

Density = Volume / Mass

Density = Mass / Volume (correct)

If an object has a mass of 200 g and a volume of 50 cm³, what is its density?

4 g/cm³ (correct)

10 g/cm³

2 g/cm³

0.25 g/cm³

Which of the following substances is likely to float on water?

Oil Signup and view all the answers

What happens to the density of a substance if its mass remains constant but its volume increases?

The density decreases Signup and view all the answers

Which is denser: a cube of wood or a cube of steel of the same size?

Steel Signup and view all the answers

If two objects have the same volume but different masses, which one is denser?

The one with the larger mass Signup and view all the answers

How does temperature generally affect the density of a liquid?

Density decreases with temperature Signup and view all the answers

Why do icebergs float in the ocean?

Icebergs are less dense than sea water Signup and view all the answers

Which of the following is a unit of density?

g/mL Signup and view all the answers

What is the density of water at room temperature?

1 g/mL Signup and view all the answers

An object will sink in water if its density is...

Greater than the density of water Signup and view all the answers

Which of these materials is the least dense?

Air Signup and view all the answers

If a material's density is 8 g/cm³, what is the mass of a 3 cm³ sample?

24 g Signup and view all the answers

How do you determine the volume of an irregularly shaped object?

Measure the amount of water it displaces Signup and view all the answers

Study Notes

Density: Key Concepts

Density measures how much mass is packed into a given volume.
Formula for calculating density: Density = Mass / Volume
Units used to express density are often g/cm³, g/mL, or kg/m³.
Water has a density of 1 g/mL at room temperature.
An object will sink in water if its density is greater than the density of water.
Less dense objects will float on water.
Temperature affects the density of liquids: Density typically decreases as temperature increases.
To determine the volume of an irregularly shaped object, you can measure the amount of water it displaces.
Mass is the amount of matter in an object.
Volume is the amount of space an object takes up.

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Description

This quiz covers fundamental concepts of density, including its formula, units of measurement, and the effects of temperature. You'll learn how density determines whether objects sink or float in water and how to measure the volume of irregularly shaped objects. Test your understanding of these essential principles!