(Activity Learning Intention:Time5 minutesStrategyThink-pair-shareInstructionCalculate 21st C Skills(s) in focusCollaboration, communication, creativity and critical thinking )Grade 12

Chemistry Activity 2019-2020

Chapter 08: Acids and Bases

Unit 18.3: The pH curves

Activity Sheet 1

Name: _________________________________ Class: ____________ Date: __________ MISS ANNA

PART1

PART2

(below)

(Activity Learning Intention:Time5 minutesStrategyThink-pair-shareInstructionCalculate 21st C Skills(s) in focusCollaboration, communication, creativity and critical thinking )Grade 12

Chemistry Activity 2019-2020

Chapter 08: Acids and Bases

Unit 18.3: The pH curves

Activity Sheet 2

Name: _________________________________ Class: ____________ Date: __________ MISS ANNA

PART 1

PART 2

PART 3

(Activity Learning Intention:Time5 minutesStrategyThink-pair-shareInstructionDetermination21st C Skills(s) in focusCollaboration, communication, creativity and critical thinking )Grade 12BC

Chemistry Activity 2019-2020

Chapter 08: Acids and Bases

Unit 8.2: The properties of acids and bases

Activity Sheet 1

Name: _________________________________ Class: ____________ Date: __________ MISS ANNA

Give three (3) laboratory apparatuses. Provide the name, draw how it looks like and state its function.

NAME

DRAW

FUNCTION

GLASS WARE

· FLASK

· BEAKER

· REAGENT BOTTLE

· TEST TUBE

· FUNNEL

· THERMOMETER

· STIRRING ROD

· GRADUATED CYLINDER

· BURRETTE

· PIPETTE

· DROPPER

· FOR MEASURING, MIXING, HEATING, CONTAINING AND TRANSFERRING

NAME

DRAW

FUNCTION

CREAMICS WARE

· EVAPORATING DISH

· MORTAR AND PESTLE

· CRUCIBLE

· SPATULA

· FOR HEATING, POUNDING/ PULVURIZING/ POWDERING, MIXING

NAME

DRAW

FUNCTION

METAL WARE

· BURNER

· WIRE GAUZE

· IRON CLAMP

· IRON STAND

· SPATULA

· FOR HOLDING, HEATING, MIXING, SUPPORTING

(Activity Learning Intention:Time5 minutesStrategyThink-pair-shareInstructionDetermination21st C Skills(s) in focusCollaboration, communication, creativity and critical thinking )Grade 12BC

Chemistry Activity 2019-2020

Chapter 08: Acids and Bases

Unit 8.2: The properties of acids and bases

Activity Sheet 2

Name: _________________________________ Class: ____________ Date: __________ MISS ANNA

Part 1: Acid-Base Determination

Objective: To determine the pH of acidic and basic solution using the litmus paper and universal indicator solution.

Solution

Reaction with litmus paper

pH

Reaction with universal indicator solution

pH

Is it acidic or basic?

A

BLUE TO RED

1-6

Red to Yellow Green

1-6

ACIDIC

B

BLUE

8-14

Dark Green to Violet

8-14

ALKALINE/ BASIC

C

BLUE TO RED

1-6

Red to Yellow Green

1-6

ACIDIC

D

BLUE

8-14

Dark Green to Violet

8-14

ALKALINE/ BASIC

E

BLUE TO RED

1-6

Red to Yellow Green

1-6

ACIDIC

F

BLUE

8-14

Dark Green to Violet

8-14

ALKALINE/ BASIC

G

BLUE TO RED

1-6

Red to Yellow Green

1-6

ACIDIC

H

BLUE

8-14

Dark Green to Violet

8-14

ALKALINE/ BASIC

SOLUTIONS A, C, E, AND G ARE ETHANOIC ACID in WATER (WEAK ACID)

SOLUTIONS B, D, F, AND H ARE SODIUM HYDROXIDE in WATER (STRONG BASE)

Part 2: Titration

Label the parts of the titration set-up

(Stopcock) (Iron stand) (Iron Clamp)

Chemistry Grade 12

(Activity Learning Intention:Time5 minutesStrategyThink-pair-shareInstructionStating and describing21st C Skills(s) in focusCollaboration, communication, creativity and critical thinking )Worksheet for Topic 9: Redox Processes

Unit 9.1 Oxidation and Reduction

Code: CHE12-WS-T09-9.1

Name: _________________________________ Class: ____________ Date: __________ MISS ANNA

PART 1: Differentiating oxidation from reduction

1. Define oxidation and reduction in terms of electrons.

2. Define oxidation and reduction in terms of loss/gain of hydrogen/oxygen.

3. Define oxidation and reduction in terms of oxidation state (oxidation number).

4. Name the following molecules/ions/compounds using oxidation states/numbers:

Chemistry Grade 12

(Activity Learning Intention:Time5 minutesStrategyThink-pair-shareInstructionStating and describing21st C Skills(s) in focusCollaboration, communication, creativity and critical thinking )Worksheet for Topic 9: Redox Processes

Unit 9.1 Oxidation and Reduction

Code: CHE12-WS-T09-9.1

Name: _________________________________ Class: ____________ Date: __________ MISS ANNA

PART 2: Half equations of oxidation and reduction reaction

8. Balance the following half-equations in neutral solution:

9. Balance the following half-equations in acidic solution:

10. Write balanced redox reactions from each pair of half equations