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balancing chemical reactions

Chemistry

11th Grade

NGSS covered

Used 3+ times

balancing chemical reactions
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6 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

__Na + __Cl2 --> __NaCl

1,1,2
2,1,2
2,1,1
already balanced

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

__NaClO--> __NaCl + __O2

2,2,2
2,2,3
3,2,2
1,2,3

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

_P4+_O  _P2O3

3 P4+1 O→ 2 P2O3
1 P4+1 O→ 2 P2O3
1 P4+ 3 O→ 2 P2O3
1 P4+ 2 O→ 3 P2O3

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

_K + _Cl2 _KCl

2 K + 16 Cl2 → 8 KCl
2 K + 1 Cl2 → 2 KCl
3 K + 4 Cl2 → 3 KCl
1 K + 1 Cl2 →1 KCl

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Balance this equation,            Al2O3 ---> Al + O2 

Cannot be balanced
2Al2O3 ---> 2Al + 3O2 
2Al2O3 ---> 4Al + 3O2 
3Al2O3 ---> 2Al + O2 

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Balance this equation:  H2 + N2 → NH3

 H2 + 4N2 → NH3
 H2 + 3N2 → 2NH3
 3H2 + N2 → 2NH3
 2H2 + 2N2 → 2NH3

Tags

NGSS.HS-PS1-7

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