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Basic Chemistry and Chemical Reactions

Across
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
a substance that forms in a chemical reaction
the center of an atom, which contains the protons and neutrons
substance that speeds up the rate of a chemical reaction
the minimum amount of energy required to start a chemical reaction
a region on an enzyme that binds to a protein or other substance during a reaction.
A substance made up of atoms of two or more different elements joined by chemical bonds
Atoms of the same element that have different numbers of neutrons
Down
Basic unit of matter
two or more atoms held together by covalent bonds
A pure substance made of only one kind of atom
a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
A chemical bond that involves sharing 2 or more electrons between atoms in a molecule
reactant of an enzyme-catalyzed reaction
A subatomic particle that has a negative charge
A subatomic particle that has no charge and that is found in the nucleus of an atom