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chemical changes - Coggle Diagram
chemical changes
different types of chemical reactions
synthesis
oxidation
combustion
rusting
decomposition
what is a chemical reaction?
a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
how does a chemical reaction occur?
Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
differences and examples of physical and chemical changes
physical change
is a temporary change.
only change the appearance of a substance
chemical change
is a permanent change.
cause a substance to change into an entirely substance with a new chemical formula.
word equations
examples
sodium + chlorine → sodium chloride
potassium hydroxide + sulfuric acid → potassium sulfate + water