Unit 8- Chemical Reactions

Which of the following equations are correctly balanced?

• 12CO₂ +H₂O --> C₆H₁₂O₆ + O₂
• CO₂ + 9H₂O --> C₆H₁₂O₆ + O₂
• CO₂ + H₂O --> 3C₆H₁₂O₆ + O₂
• 6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

Tags

NGSS.HS-PS1-7

NGSS.HS-LS1-5

Balance the following equation:

___ H₂+ ___ O₂→___ H₂O

• 1, 1, 3

• 2, 2, 2

• 1, 2, 1

• 2,1, 2

Tags

NGSS.HS-PS1-7

Balance the following equation:

___ SeCl₆+ ___ O₂→___ SeO_{2+____}Cl₂

• 1, 1, 1, 3

• 2, 1, 2, 1

• 1, 2, 1, 2

• 2, 2, 2, 4

Tags

NGSS.HS-PS1-7

4Si + S₈ --> 2Si₂S₄

_{What type of reaction is this?}

• Synthesis

• Decomposition

• Single displacement

• Double displacement

Fe + H₂SO₄ --> Fe₂(SO₄)₃ + H₂

• Synthesis (combination)
• Decomposition
• Single replacement
• Combustion

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The reaction below is an example of?
AgNO₃ + NaCl → AgCl + NaNO₃

• Single Replacement
• Double Replacement
• Decomposition
• Combustion

Tags

NGSS.MS-PS1-2

What type of reaction is illustrated below?
2HI --> H₂  +  I₂

• synthesis
• decomposition
• single replacement
• double replacement

Balance this equation.

_CF₄ + _Br₂ -- _CBr₄ + _F₂

• 2,1,2,1

• 1,2,2,1

• 1,2,1,2

• 2,2,2,2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of reaction is C3H8 + 5O2 => 3CO2 + 4H2O?

• combination
• decomposition
• combustion
• both combination and decomposition

Which reaction occurs

• Ag + KNO₃ ------> K + AgNO₃

• K + AgNO₃ ------> Ag + KNO₃

Tags

NGSS.HS-PS1-7