3.1.6

Density

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Density

Density is equal to mass divided by volume.

Density

Density

Density is given by ρ=m/V, where the ρ is the greek letter rho, not a p!
m is mass, V is volume.

Upthrust

Upthrust

An object floats in a fluid if the density of the object is lower than the density of the fluid.
The force that keeps the object afloat is called upthrust.

Law of Displacement

Law of Displacement

The Law of Displacement says that an object completely submerged in a fluid (like water) will replace an amount of fluid equal to its own volume.

Density - Example

This baby elephant has a higher density than water, so sinks...

Baby elephant

1

Biology

1.1

Practicals

1.1.1Microscope & Bacteria 1.1.2Bacteria 1.1.3Osmosis Tests 1.1.4Osmosis & Food Tests 1.1.5Enzymes 1.1.6Enzymes 2 1.1.7Photosynthesis & Plant Responses 1.1.8Photosynthesis Experiments 1.1.9Reaction Time 1.1.10Quadrats 1.1.11Decay

2

Chemistry

2.1

Practicals

2.1.1Salts 2.1.2Neutralisation 2.1.3Titration 2.1.4Electrolysis 2.1.5Electrolysis 2 2.1.6Rate of Reaction 2.1.7Rate of Reaction 2 2.1.8Chromatography 2.1.9Identifying Gases 2.1.10Identifying Gases 2 2.1.11Identifying Ions 2.1.12Carbonates, Halides & Sulfates 2.1.13Flame Emission Spectroscopy 2.1.14Water Purification 2.1.15Water Purification 2

3

Physics

3.1

Practicals

3.1.1Specific Heat Capacity 3.1.2Thermal Capacity & Insulation 3.1.3Latent Heat 3.1.4Resistance & Current 3.1.5Resistance & Current 2 3.1.6Density 3.1.7Density 2 3.1.8Force & Extension - Springs 3.1.9Waves - Ripple Tank 3.1.10Light 3.1.11Light Reflection & Refraction 3.1.12Radiation 3.1.13Radiation 2

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1

Biology

1.1

Practicals

1.1.1Microscope & Bacteria 1.1.2Bacteria 1.1.3Osmosis Tests 1.1.4Osmosis & Food Tests 1.1.5Enzymes 1.1.6Enzymes 2 1.1.7Photosynthesis & Plant Responses 1.1.8Photosynthesis Experiments 1.1.9Reaction Time 1.1.10Quadrats 1.1.11Decay

2

Chemistry

2.1

Practicals

2.1.1Salts 2.1.2Neutralisation 2.1.3Titration 2.1.4Electrolysis 2.1.5Electrolysis 2 2.1.6Rate of Reaction 2.1.7Rate of Reaction 2 2.1.8Chromatography 2.1.9Identifying Gases 2.1.10Identifying Gases 2 2.1.11Identifying Ions 2.1.12Carbonates, Halides & Sulfates 2.1.13Flame Emission Spectroscopy 2.1.14Water Purification 2.1.15Water Purification 2

3

Physics

3.1

Practicals

3.1.1Specific Heat Capacity 3.1.2Thermal Capacity & Insulation 3.1.3Latent Heat 3.1.4Resistance & Current 3.1.5Resistance & Current 2 3.1.6Density 3.1.7Density 2 3.1.8Force & Extension - Springs 3.1.9Waves - Ripple Tank 3.1.10Light 3.1.11Light Reflection & Refraction 3.1.12Radiation 3.1.13Radiation 2

Practice questions on Density

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1
Which of the following are true?True / false
2
To calculate density, we need to know:True / false
3
If an object floats...Multiple choice
4
Which of these are units of density?Multiple choice
5
If mass is 10 kg and volume is 2.5 metres cubed, what is the density of the object?Multiple choice

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Resistance & Current 2

Density 2