atoms

This is the smallest particle into which an element can be divided and still be the same substance.

• Mixture

• Compound

• Element

• Atom

The negatively charged subatomic particles that are located in energy levels around the nucleus

• Protons

• Neutrons

• Electrons

• Ions

Positively charged subatomic particles located in the nucleus of an atom

• protons

• neutrons

• electrons

• ions

The neutral subatomic particles located in the nucleus of an atom

• protons

• neutrons

• electrons

• ions

The outer most electrons of an atom

• valance electrons

• diatomic molecules

• bohr models

• isotopes

Atoms tend to gain, lose, or share electrons in order to achieve a full outer energy level

• bohr model

• octet rule

• isotopes

• valance electrons

Loss or gaining of an electron changes and atom into __________.

• isotopes

• valance electrons

• bohr models

• ions

Is a substance made up of only one kind of atom.

• pure substance

• element

• compound

• mixture

Is the number of protons in an element

• atomic mass

• atomic number

• valance protons

• diatomic molecules

Is the protons plus the neutrons

• valance electrons

• atomic number

• atomic mass

• bohr diagram