Types of Chemical Reactions

Match the following

• synthesis

• 
• single replacement

• 
• double replacement

• 
• combustion

• 
• decomposition

• 

Match the following

• double replacement

• 2 or more reactants combine to make 1 product

• synthesis

• 1 element & 1 compound in products & reactants

• combustion

• 1 reactant breaks apart into 2 or more smaller products

• decomposition

• 2 compounds in reactants & products

• single replacement

• O₂ as a reactant & CO₂ and water as products

The reactants will be bigger than the products in a ​ (a)   reaction. ​ (b)   reactions have 1 element and 1 compound. The products will be bigger than the reactants in a ​ (c)   reaction. Fuel and oxygen are needed in a ​ (d)   reaction. ​ (e)   reactions have 2 compounds.

• decomposition
• Single Replacement
• synthesis
• combustion
• Double replacement
• Covalent
• Ionic
• Metallic
• Homogeneous
• Heterogeneous

Choose the correct answers:

​ (a)   is/are combustion. ​ (b)   is/are synthesis. ​ (c)   is/are decomposition. ​ (d)   is/are single or double replacement.

• #1
• #2 and #3
• #4
• None
• #2 and #4
• #1 and #2
• #2
• #3
• #1 and #3
• #3 and #4

What will the products of each reaction look like?

Mg + N₂ --> ​ (a)  

Zn + HCl --> ​ (b)  

AlCl₃ + Na₂SO₄ --> ​ (c)  

C₄H₈ + O₂ --> ​ (d)  

H₂O --> ​ (e)  

• 1 larger product
• 1 element + 1 compound
• 2 compounds
• CO2 + H2O
• 2 smaller products
• 2 larger products
• 3 compounds
• 1 smaller product

Which type of chemical reaction has two or more reactants to make one product?

• combustion

• single displacement

• double displacement

• synthesis

• decomposition

Identify the following chemical reaction.

2 NaBr + 1 Ca(OH)₂ ----> 1 CaBr₂ + 2 NaOH

• Synthesis (or combination)

• Decomposition

• Single displacement

• Double displacement

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?

• The shape of the coal changes
• Oxygen is present
• A new substance is produced
• Coal is made up of more than one element

Which chemical reaction always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water?

• Decomposition

• Synthesis

• Combustion

• Single Replacement

What type of chemical reaction is A? ​ (a)  

• Double replacement
• Synthesis
• Combustion
• Single replacement
• Decomposition