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Define osmosis

The movement of water through a partially permeable membrane.
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Answered by Zaynah Q. • Biology tutor
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Describe the trend in reactivity in group 1 alkali metals.

Reactivity increases as you go down the group.
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Answered by Zaynah Q. • Chemistry tutor
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Define and describe one limitation of volunteer sampling.

Volunteer sampling refers to recruiting subjects who are willing to participate in the study. For example, the researcher could distribute leaflets and place an advertisement in a newspaper. The voluntary re...
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Answered by Gamze E. • Psychology tutor
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How do you cope with stress?

Firstly, I find its really important to recognise when I am feeling stressed and not to ignore it. It is easy to become fixated on the stressful situation and forget about caring for yourself. When I know i'...
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What trends are shown as you go down group 2 of the periodic table?

Group 2 (the alkaline earth metals) show many different trends. As you go down, the size of the atoms increases. This is due to the fact that each element has an extra full main level of electrons compared t...
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