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Chemistry 🌷 > Density 🌷 > Flashcards

Density 🌷 Flashcards

1
Q

What is density?

A

Density is the mass of an object divided by its volume.

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2
Q

What is the formula for calculating density?

A

Density = Mass / Volume

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3
Q

True or False: Density is a measure of how much matter is in a given space.

A

True

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4
Q

What units are commonly used to express density?

A

Kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³)

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5
Q

Fill in the blank: An object with a density greater than water will ______.

A

sink

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6
Q

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

A

4 g/cm³

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7
Q

What happens to the density of most substances when they are heated?

A

Density decreases as substances expand.

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8
Q

True or False: The density of a substance can change depending on its state (solid, liquid, gas).

A

True

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9
Q

Which has a higher density: iron or aluminum?

A

Iron

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10
Q

What is the density of water?

A

1 g/cm³

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11
Q

Fill in the blank: The density of an object can be found by measuring its ______ and ______.

A

mass; volume

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12
Q

What is the relationship between density and buoyancy?

A

Objects with lower density than the fluid they are in will float.

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13
Q

True or False: Density is an intensive property of matter.

A

True

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14
Q

How can you increase the density of a gas?

A

By decreasing its volume or increasing its mass.

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15
Q

What type of material typically has a low density?

A

Foam or air-filled materials

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16
Q

If two objects have the same volume but different masses, how will their densities compare?

A

The object with the greater mass will have a higher density.

17
Q

What is the principle of displacement in relation to density?

A

It states that the volume of fluid displaced by an object is equal to the volume of the object submerged.

18
Q

Fill in the blank: A material that is denser than water will ______ when placed in water.

A

sink

19
Q

What does it mean if an object is said to be ‘neutrally buoyant’?

A

Its density is equal to the fluid it is in.

20
Q

True or False: A substance’s density can help identify it.

A

True

21
Q

In general, do solids or liquids have a higher density?

A

Solids

22
Q

What happens to the density of ice compared to liquid water?

A

Ice is less dense than liquid water, which is why it floats.

23
Q

If an object has a volume of 100 cm³ and a density of 2 g/cm³, what is its mass?

A

200 grams

24
Q

Fill in the blank: The denser the material, the ______ it is likely to sink.

A

more

25
Q

What is the density of air at sea level?

A

Approximately 1.225 kg/m³

Chemistry 🌷 (9 decks)

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