types of chemical reactions

Question 1

What is the difference between a synthesis and combination reaction?

Answer 1

Trick question - there is no difference. They are the same thing.

Question 2

What is a synthesis reaction?

Answer 2

Reaction where smaller particles come together to make a bigger one
A+B -> AB

Question 3

What is a decomposition reaction?

Answer 3

Reaction where compound breaks apart into smaller particles
AB -> A+B
many are endothermic (require energy to start)

Question 4

What is the opposite of a synthesis reaction?

Answer 4

A decomposition reaction

Question 5

What is a single displacement reaction?

Answer 5

A reaction where one reactant replaces another in a compound

A+BC -> AC+B

Question 6

What is the difference between a single displacement reaction and a single replacement reaction?

Answer 6

Trick question - there is no difference. They are the same thing.

Question 7

What is the difference between a double displacement reaction and a double replacement reaction?

Answer 7

Trick question - there is no difference. They are the same thing

Question 8

What is a double displacement reaction?

Answer 8

Two compounds switch one reactant each to create two new compounds.
AB+CD -> AD + CB

Question 9

What is the law of conservation of mass? (definition)

Answer 9

matter cannot be created or destroyed, it can only change form. The mass of the reactants must always equal the mass of the products barring nuclear reactions.

Question 10

Which elements are diatomic at room temperature?

Answer 10

HOFBrINCl

Hydrogen, Oxygen, Fluorine, Bromine, Iodine, Nitrogen, Chlorine