1.1.3

Osmosis Tests

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Osmosis

Osmosis is the diffusion of water across a partially permeable membrane from a dilute solution (high concentration of water) to a concentrated solution (low concentration of water).

Partially permeable membrane

Partially permeable membrane

A partially permeable membrane allows water through, but won't let larger molecules dissolved in water pass through.

Water movement

Water movement

Water will move to make the concentrations the same on both sides of the membrane:
- When there are lots of water molecules (in a dilute solution) on one side of a partially permeable membrane, but not many on the other side (in a concentrated solution), water will move from the dilute to the concentrated solution.

Net movement of water

Net movement of water

It is important to remember that water molecules will move through the membrane in both directions, but the net (overall) movement of water will be from the dilute solution to a concentrated solution.

Osmosis

Osmosis is the diffusion of water across a partially permeable membrane from a dilute solution (high concentration of water) to a concentrated solution (low concentration of water).

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 Osmosis Tests

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1
In osmosis:True / false
2
Which of the following is a specialised plant tissue that uses osmosis to absorb water?Multiple choice
3
During osmosis:True / false
4
What is an independent variable?Multiple choice

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Bacteria

Osmosis & Food Tests