Grade 9 Natural Sciences

MATTER AND MATERIAL

Follow all the power points and do the exercises below.

Periodic Table & Naming of compounds: p147 – 151

Exercise 9 – p152

Chemical reactions: p156 – 157

Exercise 10 -159

Balancing of chemical reactions: p161 – 163

Exercise 11 – 164

Here is worksheets on balancing chemical equations.

Corrections and Exam Questions – 19 May 2020

Please do your corrections for the following exercises:

Please complete the Exam questions about compounds and chemical reactions on page 169 – 170 in the space provided in your book.

Unit 2 – Metals and Non-metals

  • This unit consist of three videos that you need to watch.
  • Complete Exercise 12 on page 183 – 186

Unit 2 Video 1 of 3

Unit 2 Video 2 of 3

Unit 2 Video 3 of 3

Corrections.

Please do the corrections for the following exercises:

Unit 3: Acids and Bases.

This Unit consists of 4 video’s:

Video 1: Acids and bases (page 195 – 196)

Video 2: Acids react with metals (page 198 – 201)

Video 3: Acid react with metal oxide (page 203 – 204)

Video 4: Acids react with metal hydroxide (205 – 206) and Acids react with metal carbonate (page 208 – 209)

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Energy and Change.

Unit 1: Forces

This Unit consists of 4 video’s.

Video 1: What is a force?

Video 2: Gravitational force

Video 3: Magnetic Forces

Video 4: Electrostatic forces

Corrections for Unit 1: forces

Unit 2: Cells

This Unit consists of one video.

Video 1

Corrections for Unit 2: Cells

Unit 3: Series circuits and parallel circuits

This Unit consists of 2 video’s:

Video 1: Conductors and resistors:

Video 2: Electrical circuit:

Corrections for Unit 3:

Unit 4: Safety with electricity

This unit consist of 2 video’s:

Video 1: Wiring of houses and wall sockets

Video 2: Safety devices and electrical energy theft.

Corrections for Unit 4:

Unit 5: National electricity grid.

This unit only consists of 1 Video.

Video 1: National electricity grid.

Corrections for unit 5:

Unit 6: Cost of electricity

This unit only consists of 1 video.

Corrections for unit 6:

Important notice!!!

Grade 9, please take note that you will be writing your first test for Natural Science in the week of 7 September. You will be writing in the class. So 9E1, 9E2. 9E3 and 9E4 will be writing the 7th of September and 9E5, 9E6, 9E7 and 9E8 will be writing on the 9th of September.

This test will be about Energy and change:

  • Unit 1: forces
  • Unit 2: Cells
  • Unit 3: Series circuit and parallel circuit
  • Unit 4: Safety with electricity
  • Unit 5: National electricity grid
  • Unit 6: Cost of electricity

Week of 21 – 25 September 2020 – Revision of Matter and material.

Rules for balancing chemical equations