Products
Reactants
Identifying & Balancing Elements & Compounds
Key Terms - Vocab
Balancing Equations & Identifying Specific Reactions
100

What side are the products on in a balancing equation?

What is the right side 

100

What side are the reactants always on?

What is the left side

100

Balance this equation

N2+ H2 → NH3

N2+H→ 2NH3

100

What is a reactant? 

A reactant is the starting substance that undergoes the reaction 

100

Balance this equation and identify the chemical reaction

P + O2 → P4O10

4P + 5O2 → P4O10 : This is a synthesis reaction  

200

Are products rearranged atoms from reactants, or brand new atoms?

rearranged atoms from reactants

200

What happens to reactants during a chemical equation?

Their atoms become reassembled into the products 

200

Identify the elements in this balanced equation

2K + 2H2O → 2H2 + 2KOH 

What is Potassium and Hydrogen

200

What is a product? 

Products are the new substances formed from the reactants

200

Balance & identify the reaction

NH3 → N2 + H2

2NH3 → N2 + 3H2 This is a decomposition reaction

300

What products are produced from this equation?

Al + O⟶ Al2O3

What is Aluminum and Oxygen

300

Identify the reactants in this equation

2 HCl + 2 Na → 2NaCl + H2

What is 2 HCl + 2 Na

300

Balance this equation

CH4+Cl2 →CCl4+HCl

CH4 + 4Cl2 →CCl4+4HCl

300

What is the Law of Conservation of Mass?

A law that states that matter cannot be created nor destroyed 

300

Balance and identify this reaction 

SO2+ Li2Se → SSe2 + Li2O

SO2+ 2Li2Se → SSe2 + 2Li2O This is a double replacement reaction

400

What are the product(s) of this equation, with balancing completed?

H+ I2--> 

*notice that they are both diatomic elements

What is 2HI

400

Identify the reactants in this reaction

N2+O--> 2NO 

What is Nitrogen and Oxygen

400

Identify the compounds in this balanced equation

CH4+2O→ CO2 + 2H2O

CH4, CO2, H2O

400

What is a coefficient?  

The whole number placed in front of the chemical symbol to show how many atoms of the substance there is

400

Balance this equation and identify the chemical reaction

KClO3 → KCl + O2

2KClO→ 2KCl + 3O2 This is a decomposition reaction 

500

What are the product(s) of this equation, with balancing completed?

N2+O2 --> 

What is 2NO

500

Identify the reactants in this balanced equation 

2H2+ O--> 2H2O

What is hydrogen and oxygen

500

Balance this equation that includes polyatomic ions

Al(NO3)+ H2SO4 → HNO3 + Al2(SO4)3

2Al(NO3)3 + 3H2SO4 → 6HNO3 + Al2(SO4)3

500

What is a subscript? 

The subscript is the small number after an element symbol that show how many atoms of that element are there

500

Balance and Identify this reaction

Al + Fe2O3 → Fe + Al2O3

2Al + Fe2O3 → 2Fe + Al2O3 This is a single replacement reaction 

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