1. Chemistry

2. Elements An element is a substance that ….

3. …..Cant be broken down into simpler chemical substances

4. How many naturally occurring elements are essential to living organisms? Who are the BIG 4 that make up 96% of your body mass? Did you get that 96%

5. Just because I am not making you learn the trace elements are they any less important?

6. ATOMS What is in the center of the atom? What is on the outside? What are energy levels?

7. Isotopes The definition of an isotope is…..

8. Same number of protons but……. A different number of neutrons. Example Carbon11 Carbon 12 Carbon13

9. Compounds and Bonding A compound is a substance that is composed of atoms of two or more DIFFERENT elements chemically combined. Example is H20 WHY would they do this? Just like you they want to be stable

10. All elements want to have their outermost shell filled. They can do this by 1.sharing electrons 2. giving an electrons away or 3. receiving an electron

11. Ionic bond An ionic bond is when we give an electron away or when we receive an electron.

12. Covalent bond A covalent bond is when we share an electron

13. Chemical Reaction Metabolism –All the chemical reactions that occur within an organism

14. Chemical equations

15. Difference between mixtures and solutions A mixture is…

16. solution

17. Acids and bases pH is……

18. Polarity of water