Chem 105 Exam 1

Front 1

• Pure substance (or plain substance)-

Back 1

matter that has distinct properties and a composition that doesn’t vary from sample to sample

Front 2

• Mixtures-

Back 2

combinations of 2+ substances in which each substance keeps its own chemical identity

Front 3

• Law of constant composition-

Back 3

elemental composition of a pure compound is always the same

Front 4

• Solution-

Back 4

homogeneous mixtures

Front 5

• Intensive properties-

Back 5

don’t depend on the amount of the sample

Front 6

• Extensive properties-

Back 6

depend on amount of the sample

Front 7

• Accuracy-

Back 7

how closely individual measurements agree with the correct, or true value

Front 8

• Precision-

Back 8

how close individual measurements agree with each other

Front 9

• Radioactivity-

Back 9

spontaneous emission of radiation

Front 10

• Avogadro’s number-

Back 10

6.022 X 1023

Front 11

• Electromagnetic radiation-

Back 11

light we can see, radio waves, x-rays, etc

Front 12

• Speed of light-

Back 12

3.00 X 108

Front 13

• Wavelength-

Back 13

distance between two adjacent peaks

Front 14

• Frequency-

Back 14

number of complete wavelengths, cycles, that pass a given point each second

Front 15

• Continuous spectrum-

Back 15

rainbow of colors, light from all wavelengths

Front 16

• Line spectrum-

Back 16

spectrum containing radiation of only specific wavelengths

Front 17

Water

Back 17

H2O

Front 18

Hydronium ion

Back 18

H3O+

Front 19

Ethane

Back 19

C2H6

Front 20

Ammonia

Back 20

NH3

Front 21

Methane

Back 21

CH4

Front 22

Benzane

Back 22

C6H6

Front 23

Ozone

Back 23

O3

Front 24

hydrogen ion

Back 24

H+

Front 25

Lithium ion

Back 25

Li+

Front 26

Sodium ion

Back 26

Na+

Front 27

Potassium ion

Back 27

K+

Front 28

cesium ion

Back 28

Cs+

Front 29

silver ion

Back 29

Ag+

Front 30

magnesium ion

Back 30

Mg 2+

Front 31

calcium ion

Back 31

Ca 2+

Front 32

strontium ion

Back 32

Ba 2+

Front 33

Zinc ion

Back 33

Zn 2+

Front 34

cadmium ion

Back 34

Cd 2+

Front 35

aluminum ion

Back 35

Al 3+

Front 36

ammonium

Back 36

NH4 +

Front 37

Cobalt (II) or cobaltous ion

Back 37

Co 2+

Front 38

iron(II)

Back 38

Fe 2+

Front 39

manganese(II)

Back 39

Mn 2+

Front 40

mercury (I)

Back 40

Hg2 2+

Front 41

nickel (II)

Back 41

Ni 2+

Front 42

lead (II)

Back 42

Pb 2+

Front 43

tin (II)

Back 43

Sn 2+

Front 44

chromium (III)

Back 44

Cr 3+

Front 45

Iron (III)

Back 45

Fe 3+

Front 46

Hydroxide

Back 46

OH-