What are some examples of chemical composition?

Answer 1

I would imagine you mean water, air earth and fire....that was just what the Greek philosopher Plato thought. The only elements are on the Periodic Table for example, helium, gold, Mercury and over 100 others. The definition of an element is having one type of atom. earth, water, fire, and air all have multiple kinds of atoms. Common mistake, the real major groups are metals, semimetals, nonmetals, and noble gases.

Answer 2

Seven of the most common functional groups are:

1) Hydroxyl group (-OH)

2) Carbonyl group (>CO)

3) Carboxyl group (-COOH)

4) Amino group (-NH2)

5) Sulfhydryl group (-SH)

6) Phosphate group (-OPO32-)

7) Methyl group (-CH3)

The dash (-) at the beginning of each group means that the first atom listed bonds with other atoms or functional groups to form molecules. In the case of the carbonyl group, the ">" symbol means that the carbon atom bonds to two other atoms or functional groups.

Answer 3

Example 1: sodium chloride (table salt)

Chemical formula: NaCl

Composition: sodium (39,34 %), chlorine (60,66%)

Example 2: iron(III) oxide

Chemical formula: Fe2O3

Composition: iron (69,94 %), oxygen (30,06 %)

Answer 4

The seven groups of classification are : Kingdom, Phylum, Class, Order, Family, Genus, Species

You can remember them with riddles like

King Philip Came Over For Great Soup

Answer 5

The seven major chemical groups of minerals are sulfides, native elements, silicates, sulfates, carbonates, oxides and halides.

Answer 6

Following are the 7 food chemical groups such as :

1. carbohydrates

2. fibre

3. fats

4. proteins

5. minerals

6. vitamins

7. water

Answer 7

Some great examples could be : alkali metals, alkaline earth metals, halogens, or noble/inert gases.

Answer 8

Alkali, Alkaline earth, Halogen, oxygen, Nitrogen, carbon are the main families in the periodic table.