Decomposition and Synthesis Reaction Notes

• There are four main types of decomposition reactions that occur.

• Before we learn more about decomposition reactions, let's see if you can identify the different types just by looking at the reactants.

• Also, pay attention to the given products, they will help you predict the products when you see the reaction type in the future.

Four Types of Decomposition Reactions

Categorize

Options (20)

Ba(OH)₂ → BaO + H₂O

Zn(OH)₂ →

NaOH → Na₂O + H₂O

Mn(OH)₄ → MnO₂ + H₂O

Fe(OH)₃ → Fe₂O₃ + H₂O

W(ClO₃)₃ → WCl₃ + O₂

Mo(ClO₃)₄ → MoCl₄ + O₂

Fe(ClO₃)₃ →

Ba(ClO₃)₂ → BaCl₂ + O₂

KClO₃→ KCl + O₂

V₂(CO₃)₃ → V₂O₃ + CO₂

Al₂(CO₃)₃ → Al₂O₃ + CO₂

Sn(CO₃)₂ → SnO₂ + CO₂

Zr(CO₃)₂ →

Fe₂(CO₃)₃ →

Mg₃N₂ → Mg + N₂

V₂S₅ →

BaF₂ →

Na₂O → Na + O₂          

H₂O → H₂ + O₂

Organize these unbalanced decomposition reactions by the reactants.

Simple

Metal Carbonate

Metal Chlorate

Metal Hydroxide

Drag and Drop

A simple decomposition is often

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and is separated into its​

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chemicals.

Drag these tiles and drop them in the correct blank above

binary

elemental

metal

chloride

oxide

carbon dioxide

oxygen

water

Drag and Drop

A metal carbonate decomposition occurs when the single reactant breaks down to form a​

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Placeholder

and

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.

Drag these tiles and drop them in the correct blank above

metal

chloride

oxide

carbon dioxide

oxygen

water

binary

elemental

Multiple Select

Which of the following are common reasons for decomposition to occur?

• Addition of water

• Addition of heat

• Addition of light

• Addition of electricity

• Addition of oxygen

Drag and Drop

A metal chlorate decomposition occurs when the single reactant breaks down to form a​

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​

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and​

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.

Drag these tiles and drop them in the correct blank above

metal

chloride

oxygen

water

binary

elemental

carbon dioxide

oxide

Drag and Drop

A metal hydroxide decomposition occurs when the single reactant breaks down to form a​

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​​

Placeholder

and​

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.

Drag these tiles and drop them in the correct blank above

metal

water

binary

elemental

chloride

carbon dioxide

oxide

oxygen

Fill in the Blanks

Write the name of the products that would form from the decomposition of the given reactants.

(For simple, write the elements in alphabetical order. For metal, write the name of the metal compound first. Separate the terms with the word "and".)

Iridium(I) chlorate →

Fill in the Blanks

Write the name of the products that would form from the decomposition of the given reactants.

(For simple, write the elements in alphabetical order. For metal, write the name of the metal compound first. Separate the terms with the word "and".)

Calcium carbonate →

Fill in the Blanks

Write the name of the products that would form from the decomposition of the given reactants.

(For simple, write the elements in alphabetical order. For metal, write the name of the metal compound first. Separate the terms with the word "and".)

Calcium chlorate →

Fill in the Blanks

Write the name of the products that would form from the decomposition of the given reactants.

(For simple, write the elements in alphabetical order. For metal, write the name of the metal compound first. Separate the terms with the word "and".)

Calcium hydroxide →

Fill in the Blanks

Write the name of the products that would form from the decomposition of the given reactants.

(For simple, write the elements in alphabetical order. For metal, write the name of the metal compound first. Separate the terms with the word "and".)

Niobium(III) oxide →

Fill in the Blanks

Write the name of the products that would form from the decomposition of the given reactants.

(For simple, write the elements in alphabetical order. For metal, write the name of the metal compound first. Separate the terms with the word "and".)

Cobalt(III) hydroxide →

Categorize

Options (9)

KCl + O₂ →

H₂ + O₂ →

Fe₂O₃ + H₂O →

Pb + Se →

Fe(ClO₃)₃ →

Na₂O →

Ag + NaCl →

Pb(NO₃)₂ + KI →

Ca(OH)₂ + Li →

Organize these reactions into synthesis and other reactions.

Synthesis

Other

Fill in the Blanks

What is the name of the compound that forms with the given reactants?

(Hint: identifying the reactants as products of decomposition reactions helps.)

potassium + phosphorus →

Fill in the Blanks

What is the name of the compound that forms with the given reactants?

(Hint: identifying the reactants as products of decomposition reactions helps.)

lead(II) oxide + water →

Fill in the Blanks

What is the name of the compound that forms with the given reactants?

(Hint: identifying the reactants as products of decomposition reactions helps.)

hafnium(II) oxide + carbon dioxide →

Fill in the Blanks

What is the name of the compound that forms with the given reactants?

(Hint: identifying the reactants as products of decomposition reactions helps.)

iridium(I) + bromine →

Fill in the Blanks

What is the name of the compound that forms with the given reactants?

(Hint: identifying the reactants as products of decomposition reactions helps.)

chromium(III) chloride + oxygen →