The three particles that make up atoms are _____.

What particles are found in a cloud surrounding the nucleus of an atom?

Isotopes are atoms of the same element with the same number of protons and a different number of ___.

What type of ion forms when an atom loses electrons?

Scientists show the composition of compounds by a kind of shorthand known as a chemical formula.

If an atom contains 11 protons and 12 neutrons, its atomic number is ____.

If an atom contains 3 protons, 4 neutrons, and 3 electrons, its mass number is ____.

A covalent bond is formed as the result of ____.

Of the three subatomic particles, _____ are most involved in forming chemical bonds.

Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts?

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