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WorksheetsAtoms Vocabulary
Total questions: 12
Worksheet time: 11mins
The smallest unit of matter.
molecule
proton
atom
density
A positively charged subatomic particle. Found in the nucleus.
neutron
electron
nucleus
proton
Neutral sub-atomic particle with no electrical charge.
proton
neutron
electron
nucleus
A negatively charged subatomic particle. Found OUTSIDE of the nucleus, orbiting around it.
proton
neutron
electron
nucleus
The positively charged center of an atom. The nucleus contains protons and neutrons.
neutron
nucleus
electron
atom
The negatively charged space containing electrons that surrounds the atomic nucleus.
atom
atomic mass
electron cloud
nucleus
center of an atom where protons and neutrons are found
at the top of an element square
equals number of protons
outside of an atom where electrons are found
Mass Number
smallest unit of an element
at the bottom of an element square,equals number of protons and neutrons
at the top of an element square,equals number of protons
What is the vertical column on a periodic table called?
Group
Period
What is the horizontal column on a periodic table called?
Group
Period
