1. The document describes several chemical reactions through equations. It introduces reactants and products for reactions such as HCl + NaOH yielding NaCl + H2O. 2. Tables show data for the reaction of Mg and HCl over time, indicating the reaction is exothermic as heat is produced. 3. Different types of chemical reactions are defined such as exothermic, endothermic, and catalytic reactions which speed up reaction rates.

1. By Thanyamon C. 1

2. , , ,
(reactant)
(reactant)
reactant
(product)
(product)
By Thanyamon C. 2

3. HCl(aq) NaOH(aq
HCl(aq) + NaOH(aq)
(aq (aq) NaCl(aq)
NaCl(aq) + H2O(l)
(aq
Mg(s) 2HCl(aq)
Mg(s) + 2HCl(aq)
(s MgCl2(aq) + H2(g)
aq (aqueous)
s (solid)
l (liquid)
g (gas)
By Thanyamon C. 3

4. (Exothermic reaction)
( >> )
(Endothermic reaction)
( >> )
By Thanyamon C. 4

5. By Thanyamon C. 5

6. By Thanyamon C. 6

7. ( )
(Substrate) (Product)
=
=
By Thanyamon C. 7

8. ( )
A+B C+D
= A – A
= B – B
= C – C
= D – D
By Thanyamon C. 8

9. !!!
Mg(s)
Mg(s) + HCl(aq)
aq) MgCl2(aq) + H2(g)
(cm3) (s)
(s)
0.0 0
1.0 10
2.0 21
3.0 33
4.0 46
5.0 60
6.0 75
7.0
By Thanyamon C.
91 9

10. !!! ( )
0-10 s , 10-21 s ,
10-
21-
21-33 s , 33 – 46 s
By Thanyamon C. 10

11. ( )
( )
(catalyst) By Thanyamon C.
(retarder) 11

12. By Thanyamon C. 12

13. 1. CH4(g) + 2O2(g) CO2(g) + H2O(l)
O2(g)
CO2 (g) H2O(l)
O2(g) CO(g)
O2(g) O2(g)
CO2 (g) H2O(l)
H2CO3(aq)
By Thanyamon C. 13

14. ( )
2.
pH ≈ 5.5 – 6.0
pH
CO2, SO2, NO2
O(l)
CO2(g) + H2O(l) (aq)
H2CO3(aq)
By Thanyamon C. 14

15. By Thanyamon C. 15

16. ( )
3.
(O2) (H2O)
(H2O)
4Fe(s) + 3O2(g) 2Fe2O3⋅H2O(s)
O2
, ,
, By Thanyamon C. 16

17. ( )
4.
(NaHCO
(NaHCO3)
2NaHCO3(s)
NaHCO Na2CO3 + CO2(g) + H2O
,
(H2O2)
2H2O2(aq)
H 2H2O(l) + O2(g)
,
By Thanyamon C. 17

18. By Thanyamon C. 18