Balancing Chemical Equations
When it comes to chemical reactions there are some ways that you can identify the changes the elements to check for physical changes or chemical change. When it comes to chemical equations there are some people who find it hard to balance them out and obtain the right solution. Are you one of them if so, below are some questions to help you out?
- 1.___ CH4 + ___O2 --> ___CO2 + ___H2O
- A.
1 2 1 2
- B.
2 1 2 1
- C.
3 1 2 4
- D.
1 2 3 4
- E.
4 3 1 2
- 2.1. ______ C + ______ O2 --> ______ CO2 write the correct prefixes below
- 3.1. ______NH3 --> ______N2 + ______H2
- A.
3 1 2
- B.
2 1 3
- C.
1 2 3
- D.
3 2 1
- E.
1 3 2
- 4.______ CHÂ2O + ______ HCl --> ______ CH4O + ______ Cl2
- A.
1 2 1 1
- B.
2 1 1 1
- C.
1 1 2 1
- D.
1 1 1 2
- E.
1 2 1 1
- 5.1. ______ H2S + ______ O2 --> ______ H2O + ______ S
- A.
2 1 2 2
- B.
2 2 1 2
- C.
2 2 2 1
- D.
1 2 2 2
- E.
3 1 2 2
- 6.What law says we need to have balanced chemical equations?
- A.
The law of constant attention
- B.
The law of constant comments
- C.
The second law of thermodynamics
- D.
The law of conservation of mass
- E.
The rule of law
- 7.What would happen if we did not follow the law of conservation of mass when taking apart and then putting together a car for repair?
- A.
We would have extra pieces left over at the end.
- B.
Something would fall off the car soon enough.
- C.
A fuel leak might leave a trail of gasoline along the highway.
- D.
The car might blow up.
- E.
All of the above.
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