Balancing Chemical Equations

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

• Yields
• Reactants
• Products
• Precipitates

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

CaCO₃ represents a chemical

• Symbol
• Formula
• Subscript
• Reaction

Tags

NGSS.MS-PS1-1

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

• Products
• Coefficients
• Precipitates
• Reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In chemical reactions, what does the principle of conservation of mass mean?

• Matter is not created or destroyed.
• The total mass of the reactants is greater than the total mass of the products.
• The total mass of the reactants is less than the total mass of the products.
• Matter is not changed.
  

Tags

NGSS.MS-PS1-5

In balancing chemical equations, we change

• Coefficients
• Subscripts
• Both can be changed
• None can be changed

How many phosphorus atoms are in PO₄?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in 2 H₂?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Which number should go in the blank?
_ H₂ + O₂ -> 2 H₂O

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5