Chemical Equations Balancing Practice

___ Al + ___ Br₂ -----> ____ AlBr₃

• 3, 2, 2

• 2, 3, 2

• 3, 2, 2

• 1, 2, 3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

___ Cr + ___O₂ -----> ____ Cr₂O₃

• 3, 2, 4

• 2, 3, 4

• 2,1, 5

• 4, 3, 2

Tags

NGSS.MS-PS1-5

___ AlBr₃ + ___ Cl₂ ----> ___ AlCl₃ +_{___} Br₂

• 2, 2, 3, 3

• 2, 3, 2, 3

• 2, 3, 3, 2

• 1, 2, 3, 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

___ H₂ +___O_{2 ----> ____} H₂O

• 1, 2, 2

• 2, 2, 1

• 1, 2, 3

• 2, 1, 2

Tags

NGSS.MS-PS1-5

To balance an equation you should:

• ONLY change subscripts.

• ONLY change coefficients.

• Change BOTH subscripts and coefficients.

Is this equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-5

____ H₂ + ____ N₂ ----> ____ NH₃

• 1, 2, 3

• 3, 1, 2

• 3, 2, 1

• 1, 3, 2

Tags

NGSS.MS-PS1-5

KClO₃ ----> KCl + O₂

• 3, 2, 2

• 2, 3, 2

• 2, 2, 3

• 2, 3, 4

Tags

NGSS.MS-PS1-5

P₄ + O₂ -----> ____P₂O₅

• 1, 5, 2

• 2, 5, 7

• 2, 1, 5

• 5, 1, 2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NaClO₃ ----> NaCl + O₂

• 1, 3, 2

• 2,3,2

• 2, 2,3

• 3, 2, 2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5