Reactions Pre-test Review

Balance this equation
_Al +_HCl --> _H₂ +_AlCl₃

• 2, 6, 3, 2
• it is already balanced
• 4, 12, 3, 4
• 2, 1, 4, 5

Tags

NGSS.HS-PS1-7

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.HS-PS1-7

Balance this equation
_N₂ + _H₂ --> _NH₃

• 1,2,3
• 1,3,2
• 1,1,2
• 2,1,1

Tags

NGSS.HS-PS1-7

Balance this equation.
_SnO₂ +_H₂-->_Sn +_H₂O

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

Tags

NGSS.HS-PS1-7

Two Reactants and One Product

• Decomposition
• Synthesis
• Combustion
• Single Replacement

One reactant into several products.

• Decomposition
• Synthesis
• Combustion
• Single Replacement

What type of chemical reaction is this one?
C₂H₂ + O₂ → CO₂ + H₂O

• Decomposition
• Combustion
• Synthesis
• Single Replacement 

Zn + S₈ → ZnS

• Synthesis
• Decomposition
• Single Replacement
• Combustion

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is an example of synthesis?

• Na + Br₂ → NaBr
• KClO₃ → KCl + O₂
• HgO + Cl₂ → HgCl + O₂
• Cl₂ + NaBr → NaCl + Br₂

Predict the products for the decomposition of potassium chloride: 
KCl → _________________

• KCl
• K + Cl
• K + Cl₂
• K₂ + Cl₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2