Organic compound

ORGANIC COMPOUNDS

Look at the representations of the followings organic compounds. They are made of atoms linked together by chemical bounds.

Each bowl represents an atome. Each stick represents a chemical bond.

    Carbon atoms (C) are grey
    Hydrogen atoms (H) are white
    Oxygen atoms (O) are red
    Nitrogen atoms (N) are blue
    Sulfur atoms (S) are yellow

Find which atoms appear in all these molecules, and write down one sentence to define organic compounds.
Notice that each atom always makes the same number of chemical bounds and count the number of bounds for H, C, O, N and S.

methan is the main component of natural gas, and probably the most abundant organic compound on earth	histrionicotoxin is a toxin found in the skin of poison frogs	glycerol is used as a food additive, labeled E422; it may help preserve food or be used as a sugar substitute.
caffeine is the stimulant found in coffee and tea	ethanoic acid is the main component of vinegar	ethanol is the alcohol found in alcoholic beverages
sucrose is table sugar