Chemical Reactions Review

The process in which one or more substances are changed into new substances with different chemical and physical properties is called a _____

• chemical equation

• chemical reaction

• stoichiometry

• physical change

If a chemical substance has been dissolved in water, what symbol would be used to represent the solution?

• (s)

• (g)

• (l)

• (aq)

Choose the correct coefficients that balance the following equation.

Ca + N₂ --->Ca₃N₂

• 1,3,3

• 2,3,1

• 3,1,1

• 4,1,3

Tags

NGSS.HS-PS1-7

What are the original substances in a chemical reaction called?

• solutions

• reactants

• products

• polyatomic ions

What type of reaction is occuring?

2 FeCl₃ --> 2 Fe + 3 Cl₂

• synthesis

• decomposition

• single replacement

• double replacement

The type of reaction in which oxygen is a reactant and energy is produced is called ________.

• synthesis

• decomposition

• single replacement

• combustion

What are the NEW substances produced in a chemical reaction called?

• reactants

• products

• polyatomic ions

• solutions

What type of reaction

is occurring?

Al + 3 Ag(NO₃)--> 3 Ag + Al(NO₃)₃

• synthesis

• decomposition

• single replacement

• double replacement

Predict the products of the single replacement reaction:

Ca + Al₂O_{3 -->}

• Ca + Al₂O3

• Ca + Al + O₂

• CaAlO₃

• Al + CaO

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify the reactants in this chemical reaction.

Ca + F₂--> CaF₂

• Ca

• F₂

• Ca + F₂

• CaF₂