G 6 T2 M1+2 (Copy of Carmen's game)
The ________ is the basic building block for all matter in the universe.
atom
Atoms are extremely small and are made up of a few even smaller particles, known as __________
sub-atomic particles: protons, neutrons and electrons
When any two or more atoms join together (of the same or different elements), a _______ is formed.
Molecule