14. Substances in Common Use Lesson Slides: 7 Slides

7 Slides • 6 Questions

1

14. Substances in Common Use

discussion time

2

Poll

what is the chemical name of sodium chloride ?

$NaCl_2$

2NaCl

nacl1

NaCl

3

Poll

what is the chemical name of NaHCO3 ?

sodium bicarbonate

(baking soda)

sodium carbonate

(washing soda)

4

Poll

which chemical equation means a washing soda ?

Na2 CO3

Na+CO-

NaCl2

5

$H^+$ - CATION (ACID)

OH^-

- ANION (BASE)

$H^+\ +\ \ OH^{-\ \ }=\ \ H_2O$

6

Poll

$H^+\ -$

ANION - ACID

CATION - BASE

ANION - BASE

CATION - ACID

7

NEUTRALISATION REACTION.

H^{+\ }Cl^-\ +\ Na^+OH^-

$NaCL\ +\ H_2O$

8

Poll

1.Sodium chloride

$NaCl$

$Na^3CO^4$

9

Poll

2.Magnesium chloride

$MgCl$

$MgCl_2$

10

Ph Paper

Ph- potential of
$H^+$ ions.
Ph paper originally has yellow paper.
7-neutral
1 - 6.9 = acid where 1 is the strongest acid and 6 is the weakest acid.
8-14 is the base/alkaline where 8 is weak base and 14 is strong base.

11

$Na^+Cl_-\ +\ H^+OH_{-\ }=\ NaOH\ +HCL$

SODIUM CHLORIDE + WATER =
SODIUM HYDROXIDE + HYDROCHLORIC ACID

12

bleach powder

C a O C l_{2} + C O_{2} ⟶ C a C O 3 + C l 2 ↑

calcium oxychloride + carbon dioxide = calcium carbonate + chlorine

13

$\uparrow\ \ \ \ \ \ \ \ \ \ \ \ \ \ \downarrow$

gas precipitate

14. Substances in Common Use

discussion time

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