2. Aim: What are the basic concepts that you need to know about chemistry?

3. What are all living things made of? Elements

4. Four Basic Elements of Life… Carbon (C) Hydrogen (H) Oxygen (O) Nitrogen (N)

5. What are molecules? Atoms joined together

6. What are bonds? They are formed when atoms join together. Bonds store energy.

7. How do we release energy? Break the bond

8. What can we learn from a formula? CO 2 The elements in each molecule The number of atoms of each element

9. CO2 How many carbon atoms in 1 molecule of CO 2 ? How many oxygen atoms in 1 molecule of CO 2 ?

10. How do we write water using chemical symbols? H20H20 How many hydrogen atoms in 1 molecule of water? 2 How many oxygen atoms in 1 molecule of water? 1

11. What can we learn from a structural formula? Kinds of atoms Number of atoms Arrangement of atoms Shows the bonds Bonds

12. How do we write a chemical equation? Start Finish Raw materials Products

13. What can we learn from a chemical equation? C 6 H 12 O 6 + O 2 6H 2 O + 6CO 2 GlucoseOxygenWater Carbon dioxide

14. Which are the raw materials? C6H12O6 + O2 6H2O + 6CO2 C 6 H 12 O 6 (glucose) O 2 (oxygen)

15. What are the products? C6H12O6 + O2 6H2O + 6CO2 6H 2 O (water) 6CO 2 (carbon dioxide)

16. How many carbon atoms are present in a molecule of glucose? C 6 H 12 O 6 6

17. How many water molecules are produced? 6H 2 O Check the number in front of the formula 6

18. How many glucose molecules are used? C 6 H 12 O 6 If there is no number in front, it is 1. 1

19. Types of molecules OrganicInorganic

20. What do organic molecules have in common? C & H Examples Carbon and hydrogen

21. C O What do inorganic molecules have in common? DOESN’T have BOTH Carbon & Hydrogen!