6.1

Question 1

synthesis (combination) reaction

Answer 1

two or more reactants (A and B)
combine to produce a single product (AB)
element element ➔ compound
A B ➔ AB

Question 2

decomposition

Answer 2

the breaking down of a compound into
smaller compounds or separate elements
compound ➔ element  element 
AB ➔A  B 
2NaCl ➔ 2Na  Cl2

Question 3

single replacement reaction

Answer 3

a reactive (metal or non metal ) and a compound react to produce another element and another compound
element  compound ➔ element  compound 
A  BC ➔ B  AC where A is a metal OR
A  BC ➔ C  BA where A is a non-metal
2Al  3CuCl2 ➔ 3Cu  2AlCl3

Question 4

double replacement

Answer 4

usually involves two ionic solutions that
react to produce two other ionic compounds.
ionic solution ionic solution ➔ ionic solution ionic solid
AB(aq) CD(aq) ➔ AD(aq) CB(s)
Pb(NO3)2 2NaI ➔ 2NaNO3 PbI2

Question 5

Neutralization (Acid-Base) Reactions

Answer 5

acid base ➔ salt water
HX MOH ➔ MX H2O
(X represents a negative ion. M represents a positive ion.)
H2SO4 Ca(OH)2 ➔ CaSO4 2H2O

Question 6

Combustion

Answer 6

the rapid reaction of a compound or element with
oxygen to form an oxide and to produce heat
hydrocarbon oxygen ➔ carbon dioxide water
CXHY O2 ➔ CO2 H2O
CH4 2O2 ➔ CO2 2H2O