Chemistry test 1.txt

C3H8

C2H6

CH4

3 Oxygens

4 Oxygens

2 Oxygens

1 oxygen

acetate ion

Clorate ion

perchlorate ion

Nitrate ion

permanganate ion

Carbonate ion

Chromate ion

dichromate ion

sulfate ion

phosphate ion

Hydrooxide ion

cyanide ion

ammonium ion

Each element is compose dog extremely small particles called atoms.

All atoms of a given element are identical, but the atoms of one element are different from the atoms of all other elements.

Atoms of one element cannot be changed into atoms of a different element by chemical reactions; atoms are neither created nor destroyed in chemical reactions. (Law of Conservations of Mass)

Compounds are formed when atoms of more than one element combine; given compound always has the same relative number and kind of atoms. (Law of constant Composition)

If two elements A and B combine to form more than one compound, the masses of B that can combine with a given mass of A are in the ration of small whole numbers.

K = C+273.15

C = 5/9(F-32) or F= (9/5C)+32

1 in = 2.54cm

1*10^15

1*10^12

1*10^9

1*10^6

1*10^3

1*10^-1

1*10^-2

1*10^-3

1*10^-6

1*10^-9

1*10^-12

1*10^-15

1*10^-18

1*10^-21