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GCSE

What are the effects of pressure changes for a system in equilibrium.

An increase in pressure will cause the equilibrium to shift towards the side with the smaller number of molecules. A decrease in pressure causes the equilibrium to shift towards the side with larger numbe...

TD
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Explain how electrons are arranged.

Electrons occupy energy levels/shells. Electrons occupy the lowest level (first one from the nucleus) first which can occupy a maximum of 2 electrons. After the first level, electrons fill up the other sh...

TD
2134 Views

Explain how the presence of starch can be detected in plants.

Plants store glucose produced by photosynthesis in the form of starch. To test the presence of starch in plants, first heat a leaf in boiling water for 30 seconds followed by boiling it in ethanol for a f...

TD
6483 Views

Describe how pregnancy tests sticks work.

Pregnant women produce a hormone called HCG, found in their urine. Monoclonal antibodies are found at the end of pregnancy test sticks. When a pregnant woman urinates on the stick, the monoclonal antibodi...

TD
4107 Views

Comound interest: A car is bought for the price of £12 000, but its value depreciates every year by 8%. Calculate, how much will the car be worth in 5 years

The question states the value of the car depreciates every year by 8%. This means that from the original, 100% value of the car in a set year, every consecutive year the value will decrease by 8% so that ...

VB
Answered by Victoria B. Maths tutor
4576 Views

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