In a combustion reaction, fuel is burned and reacts with oxygen to release energy. Respiration is the chemical change that takes place inside living cells. Glucose and oxygen are used to release ...
General adaptation syndrome (GAS) describes the three-stage process your body goes through when under stress: alarm, resistance, and exhaustion. Short-term stress during the alarm stage isn’t harmful ...
The reactivity series shows metals in order of reactivity. The reactivity of a metal is related to its tendency to form positive ions. Iron and aluminium are extracted from their ores in various ways.
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