Physical Science U4 Ch14 Review

What does the Law of Conservation of Mass state?

• Matter cannot be created or destroyed in a chemical reaction.

• Matter can only be destroyed in a chemical reaction.

• Matter can only be created in a chemical reaction.

• Matter can be created and destroyed in a chemical reaction.

What is a Reactant?

• The end result of a chemical reaction.

• The arrow that separates the product from the reactant.

• The number to the lower right of an element that shows the number of atoms.

• The substance changed in a chemical reaction.

______ is the end result of a chemical reaction.

• Product

• Yield

• Subscript

• Reactant

What is the left part of a chemical equation called?

2H_{2 +} O₂ --> 2H₂O

• Reactants

• Products

• Yields

• Chemical Equation

During a reaction, atoms are

• created

• destroyed

• neither created or destroyed - just rearranged

Identify the Reactants in this equation.

• A

• B

AB + CD →AD + CB

• Double Replacement
• Single Replacement
• Synthesis
• Decomposition

Identify this type of reaction,
Cl₂ + 2KI _-->  I₂ + 2KCl

• Synthesis
• Single displacement
• Double displacement
• Decomposition

2 C₅H₅ + Fe --> Fe(C₅H₅)₂ 

• single displacement
• double displacement
• decomposition
• synthesis

Which chemical reaction breaks down into 2 substances?

• Double displacement
• Single displacement
• Synthesis
• Decomposition