Learning Activity Sheet 2
Activity No. 2: Crossword Puzzle: Atomic Models in Focus
Across
4. Atomic model where
electrons don't move around
the nucleus in orbits.
Electrons exist in specific
energy levels as a cloud
8. Electrons reside in orbits.
They move between each
shell when gaining or losing
energy
9. Negatively charged
particles
10. Building block of matter
that cannot be broken apart
using any chemical means.
Down
1. An atom is made up of a
sphere of positive charges
with negatively charged
electron embedded in it.
2. Subatomic particle with a
neutral charge
3. A tangible model
5. Matter is made of small
indivisible atoms
6. Most of the mass is
concentrated in the center of
the atom
7. Positively charged particles
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