A exothermic reaction when something reacts with oxygen
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Complete and incomplete combustion?
Complete combustion always creates carbon dioxide and water. Incomplete combustion (lack of oxygen) produces carbon monoxide and water vapor
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What is corrosion?
A chemical reaction that wears away the surface of a substance (usually metal) when exposed to water air and other chemicals
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Types of corrosion?
Tarnish, verdigris and rusting
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Methods to measure the pH level of substances?
Universal indicator, cabbage water, litmus paper
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What is a pH level?
The "power of hydrogen (H+)".. concentration of H+
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What is photosynthesis?
An endothermic reaction where plants use sunlight and chlorophyll to create glucose
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What is aerobic respiration?
Chemical reaction that breaks down glucose, in the presence of oxygen, to form carbon dioxide and water, and energy
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Main steps in the carbon cycle?
Plants take up CO2 from the atmosphere for photosynthesis Animals eat plants Living plants and animals release CO2 back into the atmosphere through respiration Plants and animals release carbon back into the soil through wastes such faeces, urine and
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Acid and Metal Reactions?
Metal + Acid -> a salt + hydrogen
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Neutralisation?
acid-base reaction. when H+ are transferred from an acid to a base. Acid + Base -> salt + water
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