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chemical changes, types of chemical change - Coggle Diagram
chemical changes
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interactions
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neutralisation
when alkalis react with acids, a chemical reaction called neutralisation occurs
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indicators
it is a substance which changes colour depending on whether the solution being tested is acidic or alkaline
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universal indicator
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acids turn universal indicator to colour red, orange or yellow
alkalis turn universal indicator to colour blue, indigo or purple
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effects
benefits
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household detergents for cleaning, fertilisers that increase crop yield
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disadvantages
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sulfur dioxide in atmosphere dissolve in falling rain, causing acid rain and acid rain corrodes buildings and other structures
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types of chemical change
thermal decomposition
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it is a process in which a substance is broken down into two or more simple substances by the effect of heat
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combustion
combustion is the combination of a substance with oxygen in the presence of heat. one or more new substances may be produced.
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cellular respiration
it is the process in which living cells of plants and animals take in oxygen to release energy stored in glucose
(in cell) oxygen enters cell while water and carbon dioxide leaves the cell. Glucose is obtained in the food we eat and energy released during cellular respiration is used by cells to carry out different activities
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photosynthesis
photosynthesis is the process in which chloroplasts that contains chlorophyll in plant cells traps light energy from the sun to make food for the plant
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carbon dioxide + water :arrow_right: (sunlight, chlorophyll) :arrow_right: = Glucose + oxygen
x ray film
when an x ray is taken, film is exposed briefly to x ray that passes through patients body and onto the film.
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electricity
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electroplating
electroplating is the proccess in which a substance is coated with a metal with the passage of an electric current
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