Predicting outcomes of chemical reactions

Question 1

types of chemical reactions

Answer 1

combination reactions
decomposition reactions
single-replacement
double replacement
combustion reaction

Question 2

Combination Reaction

Answer 2

is a chemical change in which 2 or more substances react to form a single new substance
Synthesis reactions
Many are exothermic
Reactions between alkali and halogens form binary ionic compounds

Question 3

Decomposition Reaction

Answer 3

is a chemical reaction in which a single compound breakdown into 2 or more products
endothermic

Question 4

single-replacement

Answer 4

is a chemical change in which one element replaces a second element in a compound.
some are exothermic
* An element is replaced based on the activity series.

Question 5

Activity Series

Answer 5

lists the relative reactivities of elements within groups, such as metals and halogens.
A reactive metal/halogens will replace any metal/halogens listed below it in the activity series
* Metals fom Li to Na will replace H from acids and H2O
* Metals from Mg to Pb they will replace H from acids only.

Question 6

double replacement

Answer 6

is a chemical change involving an exchange of positive ions between two compounds
the take place in generally ionic aq solutions
often form a precipitate, gas, molecular compound
called double displacement

Question 7

Combustion reactions

Answer 7

is a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light.
It always involves oxygen as a reactant
Often the other reactant is a hydrocarbon