Types of Reactions & Balancing

Question 1

What is a synthesis reaction?

Answer 1

A reaction where 2 reactants combine to form 1 new substance

Question 2

What is a decomposition reaction?

Answer 2

A reaction where one substance breaks apart into 2 or more substances

Question 3

What is a single displacement reaction?

Answer 3

A reaction where 1 element takes the place (displaces) another element in a compound.

Question 4

What is a double displacement reaction?

Answer 4

A reaction where 2 cations exchange places to form 2 new compounds.

Question 5

Which reaction is like stealing a dance partner?

Answer 5

single displacement

Question 6

Which reaction is like 2 dancing couples switching partners?

Answer 6

double displacement

Question 7

What type of reaction does the following general pattern show?
X + Y –> XY

Answer 7

Synthesis

Question 8

What type of reaction does the following general pattern show?
XY –> X + Y

Answer 8

Decomposition

Question 9

What type of reaction does the following general pattern show?
A + BX –> AX + B

Answer 9

Single displacement

Question 10

What type of reaction does the following general pattern show?
AB + XY –> AX + BY

Answer 10

Double Displacement

Question 11

Given the following reactants, which type of reaction would occur? CaO + Mg –>

Answer 11

Single Displacement

Question 12

Given the following reactants, which type of reaction would occur? LiCl + MgS –>

Answer 12

Double Displacement

Question 13

Given the following reactants, which type of reaction would occur? Ca + F –>

Answer 13

Synthesis

Question 14

Given the following reactants, which type of reaction would occur? NaOH –>

Answer 14

Decomposition

Question 15

What is the law of conservation of mass?

Answer 15

A law that states that in any chemical reaction, the matter (atoms) can never be created or destroyed, only rearranged.

Question 16

When balancing an equation, what should be balanced first?

Answer 16

A polyatomic

Question 17

What is the number called that gets placed in front of a substance in order to balance it?

Answer 17

A coefficient

Question 18

True or False; When a reaction occurs, the mass of the reactants will weigh less than the mass of the products.

Answer 18

False. The law of conservation of mass indicates the total mass of reactants will be the same as the total mass of the products.