BR #62: Predicting Products of Synthesis, Decomp and Combustion

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.MS-PS1-5

NGSS.MS-PS1-2

Predict the product:

K + O₂ → ?

• K₃O₂

• KO

• K₂O

• K₂O₃

• K₂O₂

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-5

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

• Decomposition
• Combustion
• Synthesis
• Single Replacement 

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Predict the products and determine the balanced reaction:

Electricity is used in the reaction.

Lithium chloride --elect.-->

• 2 LiCl --elect.--> 2 Li + Cl₂

• LiCl --elect.--> Li + Cl

• LiCl₂ --elect.--> Li + Cl₂

• Li + Cl₂ --elect.--> LiCl₂

• LiCl --elect.--> LiO + Cl2

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Predict the product for

P + Zn -->

• PZn

• ZnP

• P₃Zn₂

• Zn₂P₃

• Zn₃P₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Reactions involving burning, combusting, or rusting all involve

• adding oxygen as a reactant

• removing oxygen as a product

• adding water as a reactant

• explosions

Tags

NGSS.MS-PS1-5

What type of reaction involves the breaking down of a substance into simpler substances?

• Single Replacement Reaction

• Double Replacement Reaction

• Synthesis Reaction

• Decomposition Reaction

Tags

NGSS.MS-PS1-1