Free Printable Chemical Reactions

Worksheets

Chemical Reactions

Total questions: 25

Worksheet time: 14mins

Name

Class

Date

The force that holds 2 atoms together is called a ________________.

Chemical Reaction

Chemical Bond

Diatomic Chemical

Glue

A molecule made of 2 atoms is called a ____________________.

Diatomic Molecule

Chemical Bond

Product

Reactant

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

Single Displacement Reaction

Double Displacement Reaction

Synthesis Reaction

Decomposition Reaction

What type of reaction involves 2 substances combining to form 1 new compound?

Decomposition Reaction

Single Displacement Reaction

Double Displacement Reaction

Synthesis Reaction

What type of reaction involves one element replacing another element in a compound?

Single Displacement Reaction

Double Displacement Reaction

Synthesis Reaction

Decomposition Reaction

What type of reaction involves ions from 2 compounds exchanging places to form 2 completely new compounds?

Single Displacement Reaction

Double Displacement Reaction

Synthesis Reaction

Decomposition Reaction

Which of the following is NOT an example of a chemical reaction?

Wood Burning

A cake baking in an oven

Melting Ice Cream

Mixing Vinegar and Baking Soda

How many atoms of Carbon are in one molecule of table sugar (C₁₂H₂₂O₁₁) ?

What are the reactants in the chemical equation pictured?

CH₄ and CO₂

CH₄ and O₂

CO₂ and H₂O

O₂ and H₂O

10.

What are the products of the chemical reaction pictured?

CH₄ and CO₂

CH₄ and O₂

CO₂ and H₂O

O₂ and H₂O

11.

What is the large number written before a chemical formula called?

Coefficient

Subscript

Reactant

Product

12.

What is the small number written after a chemical symbol called?

Coefficient

Subscript

Product

Reactant

13.

What is a shorthand notation that represents a compound or molecule called?

Chemical Equation

Chemical Formula

Chemical Reaction

Chemical

14.

According to the law of conservation of mass...

sometimes atoms are lost

sometimes atoms are gained

atoms are never lost nor gained

atoms are lost and gained

15.

What do we call a substance that increases the rate of a reaction without participating in the reaction?

catalyst

inhibitor

accelerator

decelerator

16.

What type of reaction is shown in image?

exothermic reaction

endothermic reaction

synthesis reaction

decomposition reaction

17.

What type of reaction is shown in image?

exothermic reaction

endothermic reaction

single displacement reaction

double displacement reaction

18.

In an exothermic reaction energy is ...

released

absorbed

protons

electrons

19.

In an endothermic reaction energy is...

released

absorbed

protons

neutrons

20.

Which of the following will increase the rate of a reaction?

raising the temperature of reactants

grinding the reactants into a powder

increasing the concentration of reactants

all of the above

21.

What type of compound is formed when metals react with nonmetals?

Ionic Compound

Covalent Compound

Metallic Compound

A James Bond

22.

What type of compound is formed when nonmetals react with other nonmetals?

Ionic Compound

Covalent Compound

Metallic Compound

All of the Above

23.

What type of compound is formed when metals react with other metals?

Ionic Compound

Covalent Compound

Metallic Compound

None of the Above

24.

What part of the atom is responsible for creating chemical bonds?

Protons

Neutrons

Valence Electrons

Megatrons

25.

What is the most important sign that a chemical reaction has occurred?

Gas Formation

Production of Heat Energy

Color Change

A new substance is formed in the end

Reset

Chemical Reactions

Total questions: 25

Worksheet time: 14mins

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