Quiz - Honors Synthesis and Decomposition Reactions

Without balancing the final equation, predict the product for the synthesis reaction: $K+\ Br_2\ \rightarrow$ ?

•  $KBr$  

•  $KBr_2$  

•  $K_2Br$  

•  $K_2Br_2$  

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Predict the products for this reaction and the correct set of coefficients to balance it

KOH →

• KO + H₂0 , 2,2,1

• K₂O + H₂O , 2,1,1

• K⁺ + OH^- , 1,1,1

• KO + H₂ , 2,2,1

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Predict the product(s) for this rx make sure the coefficients for a balanced equation are also present (if needed)

H₂CO₃ →

• H₂ + CO_3

• H₂O + CO₃

• H₂O + CO₂

• 2H + C + 3O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Which of the following is an example of synthesis?

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

Tags

NGSS.MS-PS1-5

The following reaction is an example of what reaction type?

CoCO₃ → CoO + CO₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Complete this equation making sure it is balanced

calcium oxide plus carbon dioxide yields

• CaO + CO₂ → CaCO₃

• CaO₂ + 2CO₂ → Ca(CO₃)₂

• 2CaO + CO₂ → 2 CaO + C

• This reaction would not occur

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Complete this equation making sure it is balanced

potassium sulfite is decomposed to yield

• K₂SO₃ → 2K + S + 3O

• 8K₂S → 16 K + S₈

• K₂SO₃ → K₂O + SO₂

• This reaction would not occur

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

A decomposition reaction can be represented as _____________________.

• AB  → A + B
• A + B → AB
• AB + CD → AC + BD
• A + BC → B + AC