1. Chemical Reactions
REVIEW

2. What is a Chemical Bond?
Atoms are connected by their valence electrons creating chemical bonds.

4. What Group doesn’t like to make chemical bonds?
Group 18 the Inert Gases because they are happy with their # of valence electrons

5. In a chemical reaction the ______ between atoms change. BONDS
Question 1

6. Chemical reactions are important because they make NEW SUBSTANCES
Question 2

7. What is something you might see if new substance forming ?
QUESTION 3
What is something you might see if new substance forming ?
Gas Forming
Color change
Temperature
change

8. Water boiling is what kind of change? PHYSICAL
Question 3

9. Mixing oil and vinegar is a ___________ change. PHYSICAL
Question 4

10. In a chemical reaction the same number of atoms have to be in the reactants and products. What is the name of this rule? CONSERVATION OF MATTER
Question 5

11. 2 C6H12O6
How many hydrogen atoms are there?
2x12=24
Question 6

12. Back to presenting

13. When you snap a glow stick it produces light and a bit of heat
When you snap a glow stick it produces light and a bit of heat. What kind of reaction is this? EXOTHERMIC
Question 7

14. Mouthwash has a pH of 8.5. Mouth wash would be classified as a__________. BASE
Question 8

15. What is the only substance that is perfectly neutral with a pH of 7.00? WATER
Question 9

16. Question 10 What is the only way to create new substances with different properties? Through a CHEMICAL REACTION

17. Last Page BONDS VALENCE ELECTRONS PHYSICAL CONSERVATION OF MASS IS
ENDOTHERMIC
Sugar and oxygen
ACIDIC
7 NEUTRAL
Last Page