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Atoms

100

This is a negatively charged particle in an atom

Electron

200

This is the particle in an atom that determines the atomic number

Proton

300

This is a neutrally charged particle found in the nucleus

Neutron

400

These two particles determine the charge of an atom

Electrons and protons

500

This is the center of an atom

Nucleus

Measurements

100

This is the measure of how much space something takes up

Volume

200

This is a measurement of how much matter something has

Mass

300

These units would be used for mass

grams, kilograms, miligrams

400

This is a measurement found by dividing mass by volume

Density

500

This measurement would use the units g/mL

Density