Balancing Chemical Equations

Which number should go in the blank?
2 Na+ _ Cl₂ -> 2 NaCl

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which number should go in the blank?
Mn + _ HNO₃ → Mn(NO₃)₂ + H₂

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which number should go in the blank?
Al(NO₃)₃ + _  NaOH -> Al(OH)₃ + 3 NaNO₃

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• 2
• 3
• 0

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

The substances listed on the left side of a chemical equation are the (before the arrow)

• Products
• Coefficients
• Precipitates
• Reactants

Identify the reactant(s) and product(s) of the reaction.

• All three are reactants and none are products.
• Hydrogen and water are the reactants, and oxygen is the product.
• Water and oxygen are the reactants, and hydrogen is the product.
• Hydrogen and oxygen are the reactants, and water is the product.
  

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

• 2
• 16
• 8
• 5

How many Hydrogen (H) atoms are in NH₃O5

• 3
• 4
• 5
• 1

The substances listed on the right side of a chemical equation are the (after the arrow)

• Yields
• Reactants
• Products
• Precipitates

How many phosphorus (P) atoms are in PO₄?

• 1
• 2
• 3
• 4

How many hydrogen atoms are in 2 H₂?

• 1
• 2
• 3
• 4