Grade 10 CBC/CBE Chemistry: Balance Any Chemical Equation in 4 Steps
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Grade 10 CBC/CBE Chemistry: Balance Any Chemical Equation in 4 Steps
584 просмотра · 11 дн. назад
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584 просмотра · 11 дн. назад
In this Grade 10 CBC Chemistry lesson you will learn to write equations that keep every atom, using one rule and a four-step routine: count, add coefficients, recount and check. You will balance equations with the lowest common multiple, leave the busiest atom until last, turn word equations into balanced equations and add state symbols.
FREE REVISION PAPER FOR THIS LESSON
Paper 1: Core concepts
Download them here: https://drive.google.com/file/d/1pt5h...
IN THIS VIDEO
0:00 Hook and title
0:28 In this video
0:55 Reactants, products and the arrow
1:20 Atoms are rearranged, not made or lost
1:48 Counting atoms
2:29 Your turn: counting atoms
2:58 The one rule
3:32 The four-step routine
4:02 Worked example: magnesium and oxygen
4:45 Worked example: water, and the smallest numbers
5:30 Your turn: balance two equations
6:06 Leave the busiest atom until last
6:48 Atoms balance, not molecules
7:14 Using the lowest common multiple
7:55 Your turn: sodium and water
8:43 An equation with three products
9:12 Always count first
9:48 From a word equation to a balanced equation
10:24 State symbols
10:55 Your turn: acid and alkali
11:38 Watch out for these mistakes
12:38 What to remember
13:11 Challenge and end of the playlist
YOUR CHALLENGE
Propane, C₃H₈, is one of the gases in cooking gas. It burns to form CO₂ and water. Balance C₃H₈ + O₂ → CO₂ + H₂O. Write your answer in the comments.
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This is the last video in Playlist 2: Ions, formulae and equations.
Playlist 3 (Bonding and structure), Video 1: Ionic bonding.
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