Balancing Chemical Equations 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

___ NaClO₃ ----> ___ NaCl + ___ O₂

• 1, 3, 2

• 2,3,2

• 2, 2,3

• 3, 2, 2

Tags

NGSS.MS-PS1-2

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-PS1-5

Balance this equation:

​ (a)   FeCl₂ + ​ (b)   Cl₂ --> ​ (c)   FeCl₃

• 2

• 1

• 3

• 4

Tags

NGSS.MS-PS1-5

When balancing an equation, you can change the ​ (a)   of a substance, but you cannot adjust any ​​ (b)   because that would change the formula.

• coefficient

• subscript

Tags

NGSS.MS-PS1-5

​ ​ Balance the equation. The options can be used more than once.

​ ​ (a)   K   + Cl₂       →     ​ ​ (b)   KCl

• 2

• 3

• 4

• 1

Tags

NGSS.MS-PS1-5

Balance the Equation.

​ (a)   P₄ + ​ (b)   O₂ --> ​ (c)   P₂O₃

• 1

• 3

• 2

• 4

Tags

NGSS.MS-PS1-5

The numbers placed in ​ (a)   of formulas to balance equations are called ​ (b)   , and they multiply all the atoms in a ​ (c)   . Thus, the symbol “2NaHCO₃” indicates ​ (d)   units of sodium bicarbonate, which contain 2 Na atoms, 2 H atoms, 2 C atoms, and 6 O atoms

(2 X 3= 6, the coefficient times the subscript for O).

• front

• coefficients

• two

• formula

​ (a)   Fe₂O₃ + ​ ​ (b)   H₂ --> ​ ​ (c)   Fe + ​ (d)   H₂O

• 1
• 6
• 4
• 5
• 7
• 8
• 9
• 2
• 3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5