Synthesis/Decomp Rxn Quiz

Which of the following is an example of synthesis? Select all that apply.

• Na + Br₂ → NaBr

• KClO₃ → KCl + O₂

• HgO + Cl₂ → HgCl + O₂

• Cl₂ + NaBr → NaCl + Br₂

• Ca + I₂ → CaI₂

Tags

NGSS.HS-PS1-1

Predict the product:

K + O₂ → ?

• K₃O₂

• KO

• K₂O

• K₂O₃

• K₂O₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A decomposition reaction can be represented as _____________________.

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

This chemical equation for mercury oxide is an example of what type of reaction?
2HgO  → 2Hg + O₂

• decomposition reaction
• synthesis reaction
• combustion reaction
• Marvin the Martian reaction

Choose the balanced chemical equation for the formation of iron (III) oxide.

• 2Fe + O₂ → 2FeO₂

• Fe + O₂ → FeO₂

• 4Fe + 3O₂ → 2Fe₂O₃

• 4Fe + O₂ → 2FeO₂

What is decomposition?

• putting substances together
• breaking substances apart
• element replacing another element in a compoud
• burning of a subtance

Tags

NGSS.MS-PS1-2

What type of chemical reaction is this?
Al(OH)₃ → Al₂O₃  + H₂O

• Decomposition
• Combustion
• Synthesis
• Single Replacement 

Tags

NGSS.MS-PS1-2

copper(II)carbonate → ___________ + carbon dioxide

• copper

• copper(II) oxide

• copper (I) oxide

• copper (II) hydroxide

Predict the products and determine the full equation for

Carbon dioxide + water -->

(it does not need to be balanced)

• CO + H₂O --> HCO₂

• CO₂ + H₂O ---> HCO₃

• CO₂ + H₂O --> H₂CO₃

• CO₂ + H₂O --> H₂CO₃ + 0₂

Predict the product and give the full equation (it does not need to be balanced)

Calcium hydroxide --heat-->

• CaOH --heat--> CaO +H₂

• Ca(OH)₂ --heat--> Ca + H₂O

• Ca(OH)₂ --heat--> CaO + H₂O

• CaO --heat--> Ca + O₂

• CaOH --heat--> CaO + H₂O