Balancing/Word Equations Review

The substances listed on the left side of a chemical equation are the

• Products
• Coefficients
• Precipitates
• Reactants

How many Hydrogen (H) atoms are in NH₃O5

• 3
• 4
• 5
• 1

Tags

NGSS.MS-PS1-1

Is the following equation balanced or unbalanced ? 
N₂ +3 H₂ --> 2NH₃

• Balanced
• Unbalanced

Tags

NGSS.MS-PS1-5

How many hydrogens are in 4H₂O?

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

What are the coefficient used to balance the equation below?
__Ag₂O →__ Ag +___O₂

• 2,4,1
• 1,1,1
• 2,1,2
• 2,2,2

Tags

NGSS.MS-PS1-5

Which problem is balanced?

• PbO₂ + 2H₂--> H₂SO₄
• SO₂ + H₂0 --> H₂SO₄
• 2Na + 2H₂O --> 2NaOH + H₂
• 2Na + 2H₂O --> 2NaOH + H

Tags

NGSS.MS-PS1-5

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction

Tags

NGSS.MS-PS1-5

Balance this equation.
_CH₄ + _O₂ --> _CO₂ + _H₂O

• 1,2,1,1
• 2,1,2,1
• 1,2,1,2
• 0,2,0,2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Balance this equation-
__P₄ + __O₂ --> __P₂O₃

• it is already balanced
• 2, 1, 3
• 1, 2, 3
• 1, 3, 2

Tags

NGSS.MS-PS1-5

Balance this reaction:

___RbNO₃ + ___BeF₂ --> ___Be(NO₃)₂ + ___RbF

• 2, 1 --> 1, 2

• 1, 2 --> 2, 1

• 1, 2 --> 1, 1

• 2, 1 --> 2, 1

Tags

NGSS.MS-PS1-5