Balancing of Chemical Equations PreLesson

How many oxygens are there in H₂O?
1. 1
2. 2
3. 3
4. 0
How many oxygens are there in 2H₂O?
1. 2
2. 3
3. 4
4. 6
How many hydrogens are there in 2H₂O?
1. 2
2. 3
3. 4
4. 6
How many oxygens are there in 2(NO₃)?
1. 3
2. 4
3. 5
4. 6
How many oxygens are there in 4(NO₃)?
1. 3
2. 4
3. 12
4. 16
How many Aluminums are there in 3Al₂O₃?
1. 3
2. 5
3. 6
4. 8
How many bromines are there in 4AlBr₃?
1. 3
2. 12
3. 1
4. 4
How many hydrogens are there in Mg(OH)₂?
1. 1
2. 2
3. 3
4. 4
How many oxygens are there in Mg(OH)₂?
1. 1
2. 2
3. 3
4. 4
OH is Hydroxide. How many hydroxides are there in Al(OH)₃?
1. 1
2. 2
3. 3
4. 4
We call NO₃ "Nitrate". How many nitrates are there in Cu(NO₃)₂?
1. 1
2. 2
3. 3
4. 4
How many oxygens are there in: CO₂+ H₂O?
1. 1
2. 2
3. 3
4. 4
How many oxygens in: Mg + 2AgNO₃?
1. 1
2. 3
3. 4
4. 6
How many oxygens are there in: 2CO₂+ H₂O?
1. 1
2. 2
3. 3
4. 5
How many oxygens in: C₆H₁₂O₆ + 6O₂?
1. 2
2. 6
3. 18
4. 24
What number (coefficient) will balance this combustion reaction? ___H₂ + O₂ → 2H₂O
1. 1
2. 0
3. 2
4. 4
What coefficient would balance this addition reaction? 2Al + __ Br₂ → 2AlBr₃
1. 2
2. 3
3. 4
4. 5
What coefficient balances this decomposition reaction: ____Fe₂O₃ → 4Fe + 3O₂
1. 2
2. 1
3. 3
4. 4
What coefficient balances this single displacement reaction: Al + ___Na(OH) → Al(OH)₃ + 3Na
1. 1
2. 2
3. 3
4. 4
What coefficient balances this combustion reaction: CH₄ + ___O₂ → CO₂ + 2H₂O?
1. 0
2. 1
3. 2
4. 4
How did you do on this lesson?
1. Easy - no mistakes
2. Pretty easy - a few mistakes
3. Challenging - missed a lot
4. Hard - struggled on most of them