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chemical reactions

Across
describes a process or reaction in which the system absorbs energy from its surroundings
of chemical reaction in which two or more simple substances combine to form a more complex product.
is a chemical reaction that releases energy by light or heat.
is the ratio of moles of one substance to the moles of another substance in a balanced equation.
is a chemical reaction in which the oxidation states of atoms are changed. Any such reaction involves both a reduction process
is a substance that is formed as the result of a chemical reaction.
a substance that takes part in and undergoes change during a reaction
a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
Down
a single compound breaks down into two or more elements or new compounds.
a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
is the potential of a chemical substance to undergo
When organic molecules combust the reaction products are carbon dioxide and water (as well as heat).
chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
an uncharged molecule (typically highly reactive and short-lived) having an unpaired valence electron.
a substance or layer that underlies something, or on which some process occurs, in particular.