Reaction Types

Question 1

synthesis reactions

Answer 1

2 simple reactions combine to make a larger/more complex product

Question 2

general pattern for a synthesis reaction

Answer 2

A+B = AB

Question 3

decomposition reactions

Answer 3

large compounds are broken down into smaller compounds/elements
usually absorbs energy (thermal or electrical)

Question 4

general pattern of decomposition reactions

Answer 4

AB = A+B

Question 5

single displacement reactions

Answer 5

one element displaces or replaces an element in a compound

if involving an ionic compound and a metal, it is always the positive ion that is replaced in the compound

Question 6

general pattern of a single displacement reaction

Answer 6

A+BC = AC+B

Question 7

double displacement reaction

Answer 7

when 2 elements in different compounds trade places

Question 8

general pattern of double displacement reaction

Answer 8

AB+CD = AD+CB

Question 9

combustion reactions

Answer 9

any reaction where a “fuel” reacts with oxygen rapidly and releases energy

Question 10

hydrocarbon

Answer 10

any compound made ONLY of hydrogen and carbon

Question 11

complete combustion

Answer 11

if there is EXCESS O2

blue flame, very efficient and hot

Question 12

incomplete combustion

Answer 12

if there is LIMITED O2

yellow flame, less efficient and hot

Question 13

what products will always be produced by a combustion reaction?

Answer 13

CO2
H2O
energy