Atoms and Elements

1. number it is the sum of the number of nucleons in an atom
4. a very small particle that exists in the nucleus of every atom and has a positive charge of electricity.
9. It is used to make proteins, strong bones, and to regulate the body's temperature.
10. help you keep the pool clean
12. a tiny particles
13. is a shiny yellow metal
14. is a pure substance that is made from a single type of atom.
16. are atoms that have the same number of protons and electrons, but a different number of neutrons

2. a silver-white light metallic chemical element
3. produced is used for electrical wiring and cable
5. has no electrical charge
6. s a chemical element that is used to create nuclear power and nuclear weapons
7. is a mineral that is found in foods, specifically dairy, and stored in bones and teeth in our body.
8. a very small particle that has a negative charge
9. a nonmetal that can combine with a metal to form an alloy
11. It is used to blow up balloons
15. a chemical element with symbol Pb
17. you need it breath