Types of Reactions and Balancing

What is a reactant?

• a volatile chemical
• a dangerous substance
• the substances you start with in a chemical reaction
• the substances that are formed by a chemical reaction 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is a product?

• a fancy word for make-up
• a volatile chemical
• the substances you start with in a chemical reaction
• the substances that are formed by a chemical reaction

The number of atoms you begin with in a chemical reaction ...

• must be the same as the number of  atoms you end with
• must be an even number
• can be different to the number you finish with
• changes depending on how much energy is formed

Tags

NGSS.HS-PS1-7

What mathematical function do coefficients perform in a balanced equation?

• addition
• subtraction
• multiplication
• division

Tags

NGSS.HS-PS1-7

Balance the following:

____ Fe + ____ Cl₂ → ____ FeCl₃

• 1,1,2
• 1,3,1
• 2,2,3
• 2,3,2

Balance the following:

____ Al + ____ O₂ → ____ Al₂O₃

• 2,3,4
• 4,3,2
• 1,1,2
• 2,1,1

Tags

NGSS.HS-PS1-7

Balancing the following:

____ Al + ____ HCl → ____ AlCl₃ + ____ H₂

• 1,3,1,2
• 2,3,2,3
• 2,6,2,3
• 3,2,6,2

Balance the following:

____ H₂SO₄ + ____ NaNO₂ → ____ HNO₂ + ____ Na₂SO₄

• 1,1,2,1
• 1,2,2,1
• 2,3,3,2
• 4,3,2,1

Tags

NGSS.HS-PS1-2

Balance the following: Fluorine and Aluminum oxide react to produce Aluminum fluoride and Oxygen

• 6,2,4,3
• 3,4,2,6
• 5,1,3,2
• 3,2,4,3

Tags

NGSS.HS-PS1-7

Balance the following:

Dicarbon hexahydride and Oxygen react to produce

Carbon dioxide and Dihydrogen monoxide

• 1,6,2,3
• 1,6,3,2
• 2,7,4,6
• 6,4,7,2