6.3 Types of Chemical Reactions

Question 1

What is a synthesis reaction

Answer 1

Two or more substances, typically elements, combine to form a more complex compound is called a synthesis or combination reaction

Ex 3 H2 + N2 -> 2 NH3

Question 2

What is a decomposition reaction

Answer 2

One substance breaking into two or more new substances is called a decomposition reaction

Ex 2KClO3 -> 2 KCl + 3 O2

Question 3

What is a single replacement reaction

Answer 3

When an element and a compound react to form a different element and compound a single replacement reaction has occurred. In this type of reaction one element replaces another element in the compound.

Question 4

What parts can be replaced in a replacement reaction

Answer 4

In single replacement reactions either a metal will replace the metal, or a non metal will replace a non metal, however an element can only be replaced by an element with either an equal or greater reactivity.

Question 5

What is the order of reactivity for metals

Answer 5

Li, K, Sr, Ca, Na, Mg, Al, Zn, Cr, Fe, Ni, Sn, Pb, H, Cu, Ag, Hg, Pt, Au

Question 6

What is the order of reactivity for nonmetals

Answer 6

F, Cl, Br, I

Question 7

What is a double replacement reaction

Answer 7

A double replacement reaction occurs when two compounds react to form two new compounds, usually ionic compounds, typically occurs in water

Question 8

What is evidence for a double replacement reaction

Answer 8

Evidence for this type of reaction include, the formation of a new solid, or the neutralization of an acid/base producing water

Question 9

What is a combustion reaction

Answer 9

A combustion reaction occurs when a fuel combines rapidly with air

Ex: 2 Mg + O2 -> 2 MgO

Question 10

What is a neutralization reactoon

Answer 10

When an acid and a base react to form a salt and water a neutralization reaction has occurred