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KS3 Chemical Reactions Key Words

Chemical Reactions Acid Corrosive substance which has a pH lower than 7. Acidity is caused by a high concentration of hydrogen ions...
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Year 7 Particles Key Words

Particles (Year 7) Atom The smallest particle of an element that can exist. Boil ...
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KS3 Reproduction Key words

Reproduction Embryo The next stage after an egg has been fertilised. Fertilisation ...
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KS3 Cells Key words

Cells Cell membrane Surrounds the cell and controls movement of substances in and out. Cell wall ...
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KS3 Microbes Key words

Microbes Antibiotics Substance that controls the spread of bacteria in the body by killing them or stopping them reproducing.
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KS3 Health and Fitness Key Words

Health and Fitness Anaerobic Releasing energy from the breakdown of glucose without oxygen, producing lactic acid (in animals...
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KS3 Ecology Key Words

Ecology Adaptation A feature of an organism`s body which helps it to survive. Biodivers...
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KS3 Plants Key Words

Plants Cell Wall Strengthens the cell. In plant cells it is made of cellulose. Chlor...
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KS3 Genes Key words

Genes Amphibians A class of animals that includes frogs, toads and newts. They are able to breath via lungs as well as gills. ...
Carolina

How does an electron microscope work?

Electron microscopes utilise the same main concepts that a light microscope uses. In light microscopy, you need: a light source, a specimen and a lens to magnify the image. Electron m...