What changes density
Not shape or size; temperature and pressure.
Cut it in two
You cut a block of a substance into two halves.
Does the density of each half change?
What this lesson covers
The idea
The density of a substance is independent of its shape or size but depends on its temperature and pressure.
Cut it in two
You cut a block of a substance into two halves.
Does the density of each half change?
- No, density does not depend on size
- Yes, it halves
- Yes, it doubles
What changes density
Tap the bin where each change belongs.
Independent of shape and size
The density of a substance is independent of its shape or size. It depends on temperature and pressure. Pressure mainly affects the density of gases. Its effect on solids and liquids is negligible.
Density is independent of shape or size. It depends on temperature and pressure.
Notes
Density does not depend on shape or size. It does depend on temperature and pressure.
Check yourself
The density of a substance is independent of its …
Density depends on …
Pressure mainly affects the density of …
A stone is broken into two pieces. The density of each piece is …
- shape or size — correct. Yes!
- temperature. Density depends on temperature.
- pressure. Density depends on pressure.
- shape and size. Density does not depend on shape or size.
- temperature and pressure — correct. Yes!
- colour and smell. Density depends on temperature and pressure.
- solids. The effect on solids and liquids is negligible.
- liquids. The effect on solids and liquids is negligible.
- gases — correct. Yes!
- the same as before — correct. Yes!
- half of before. Density does not depend on size.
- double of before. Density does not depend on size.