Chemical reactions Flashcards
chemical reaction
atoms are rearranged to create new substances
combustion
a substance reacts with oxygen to give out light and heat
conservation of mass
mass of reactants is the same as the total mass of products
decomposition
compound breaks down to form simpler compounds/elements
Displacment
A metal replaces a less reactive metal in a chemical reaction
endothermic reaction
A substance that takes in energy from its surroundings
Exothermic reaction
Releasing energy into its surroundings
fuel
a material that is burnt for energy
neutrailsation
When an acid and a base (alkali) reacts to give a different pH
Oxidization
substance reacts with oxygen to for an oxide
Physical change
A change that is reversible, nothing new is made
Product
Substance that is made in a chemical reaction
Reactant
A starting substance in a chemical reaction
Thermal decomposition
When a compound is broken down using heat
