ACROSS
4.
a subatomic particle that has a negative charge
6.
a subatomic particle that has a positive charge and that is located in the nucleus of an atom
11.
the attractive force between two bodies of different substances that are in contact with each...
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ACROSS
4.
a subatomic particle that has a negative charge
6.
a subatomic particle that has a positive charge and that is located in the nucleus of an atom
11.
the attractive force between two bodies of different substances that are in contact with each other
13.
the minimum amount of energy required to start a chemical reaction
14.
a substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an
element have the same atomic number
15.
the force that holds molecules of a single material together
17.
the chemical bond that forms between the carboxyl group of one amino acid and the amino group of another amino
acid
18.
a bond formed when atoms share one or more pairs of electrons
19.
a solution made from a weak acid and its conjugate base that neutralizes small amounts of acids or bases added to it
20.
a substance made up of atoms of two or more different elements joined by chemical bonds
DOWN
1.
the attractive force that holds atom
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