Solution to Frame 4
This drawing represents a single atom. It has two parts to it.
In the center is a _______________. Around the nucleus
Solution to Frame 5
Some kinds of atoms have more electrons than others, but
they all have two main parts. In the center is a
___________. Around the nucleus are _____________.
Solution to Frame 6
All electrons are said to be negatively charged.
The electrons (indicated by arrows) are
Solution to Frame 7
The electrons above have minus signs inside them because
they are negatively charged. All electrons are said to be