1. Chemical bonds
2. Atom
3. The nucleus is the center of the atom.
4. Protons and neutrons
5. Electrons
6. An element is a pure substance made of only one kind of atom.
7. Atoms combine to form molecules.
8. A chemical reaction occurs when hydrogen and oxygen gas react to form water.
9. Different atoms have different numbers of protons.
10. Elements are listed on the periodic table in order of increasing atomic number.
11. The atomic number represents the number of protons in an atom.
12. To draw an atom and represent the electrons, you’d start with a circle for the nucleus, then add rings around it for electron shells, placing dots (electrons) on the rings.
13. There are 3 main types of chemical bonds: ionic, covalent, and metallic.
14. There are 3 subatomic particles: protons, neutrons, and electrons.
Parent Tip: Review the logic above to help your child master the concept of bill nye the science guy worksheet.