To Hot To Handle!

The changing of substances to new products through the formation of new bonds.

Color Change

Evolution of Heat and Light

Production of Gas

Formation of a Precipitate

When 2 or more substances combine to form a

single substance.

2Mg(s) + O2(g) 2MgO(s)

Mg

O2

MgO

This type of reaction was predominantly used in flash bulbs.

heat

When a single compound is broken down into

2 or more products.

2HgO(s) 2Hg(l)

+ O2(g)

heat

HgOheat

HgO2

This type of reaction is used in dynamite.

One element replaces a second element in a compound.

2K(s) + HOH(l) 2KOH(aq) + H2(g)

K

H2OKOH

H2

The exchange of positive ions between 2 reacting compounds.

K2CO3(aq) + BaCl2(aq) 2KCl(aq) + BaCO3(s)

BaCO3(s)

KCl(aq)

When a carbon-containing compound reacts with oxygen to produce carbon dioxide and water.

CH4(g) + 2O2(g) CO2(g) + 2H2O(g)

heat

CH4

O2

CO2

H2O