Chapter 1

Question 1

Scientific Method

Answer 1

1) Observation
2) Hypothesis
3) Experiment
4) Theory

Question 2

Branches of Chemistry

Answer 2

-Physical
-Analytical
-Inorganic
-Organic
-Biochemistry

Question 3

Types of Matter

Answer 3

-Solid – compact and vibrating molecules
-Liquid – flowing molecules
-Gas – flying and bouncing molecules
-Plasma – free-moving electrons

Question 4

S—>L

Answer 4

Melting

Question 5

L—>G

Answer 5

vaporizing

Question 6

S—>G

Answer 6

sublimation

Question 7

L—>S

Answer 7

freezing

Question 8

G—>L

Answer 8

condensation

Question 9

G—>S

Answer 9

deposition

Question 10

Law of Definite Proportions (Constant Composition)

Answer 10

The principle that a compound always contains the same proportion of its component elements

Question 11

Compound

Answer 11

Two or more elements combined in a fixed ratio by mass (H2O)

Question 12

Element

Answer 12

Cannot be decomposed into simpler substances by chemical means (Copper wire, Ni)

Question 13

Pure Substance

Answer 13

matter with a constant composition

Question 14

Homogenous

Answer 14

Uniform composition, no phases present (Sugar water)

Question 15

Heterogenous

Answer 15

Composition is not uniform, phases present (Salad with dressing, chocolate chip cookie)

Question 16

Law of Multiple Proportions

Answer 16

When two elements form two different compounds, the mass ration in one compound is a simple whole number times the other

Question 17

Intensive

Answer 17

independent of sample size (density, color, luster, melting point)

Question 18

Extensive

Answer 18

dependent on sample size (mass, volume, weight)