Chapter 1 And 2

Question 0

The 3 steps involved in solving scientific problems

Answer 0

Define the problem (gather info, facts)
Propose solutions (form hypotheses and organize info)
Evaluate your proposed solutions (develop experiments)

Question 1

Science that deals with the materials of the universe and the changes that these materials undergo

Answer 1

Chemistry

Question 2

A process of studying natural phenomena that involves making observations, forming laws and theories, and testing theories by experimentation

Answer 2

Scientific method

Question 3

Quantitative observations involves

Answer 3

Numbers

Question 4

Possible explanation for an observation

Answer 4

Hypothesis

Question 5

Set of tested hypotheses that Gives an overall explanation of some part of nature

Answer 5

Theory

Question 6

How does a hypotheses become a theory

Answer 6

Set of hypotheses that agrees with various observations

Question 7

Difference between theory and observation

Answer 7

Observation- something that is witnessed and can be recorded

Theory- interpretation, possible explanation

Question 8

How is experiment used to refine theory

Answer 8

Making new observations

Question 9

Generally observed behavior

Answer 9

Natural law

Question 10

Observation that the total mass of materials is not affecte by chemical change in those materials

Answer 10

Law of conservation of mass

Question 11

Difference between law and theory

Answer 11

Law- summary of observed behavior

Theory- an explanation of behavior

Question 12

Author doesn’t think science automatically leads to profess

Answer 12

Continual progress, doesn’t just stop

Question 13

A quantitative observation

Answer 13

Measurement

Question 14

Measurement consists of what two parts

Answer 14

Numbers and units

Question 15

Why are units important

Answer 15

Units tell scale

Question 16

Technique used to express very large or very small numbers

Answer 16

Scientific notation

Question 17

Necessary in chemistry

Answer 17

Make number more compact and easier to write

Question 18

Part of a measurement tells us what scale is being used to represent the results of the measurement

Answer 18

Units

Question 19

Two most widely used system of units

Answer 19

English system and metric system

Question 20

Which is used in chem

Answer 20

Metric system, si

Question 21

M

Answer 21

Mega

Question 22

K

Answer 22

Kilo

Question 23

D

Answer 23

Deci

Question 24

C

Answer 24

Centi

Question 25

m

Answer 25

Milli

Question 26

u

Answer 26

Micro

Question 27

n

Answer 27

Nano

Question 28

Mass

Answer 28

Kilogram

Question 29

Length

Answer 29

Meter

Question 30

I cubic centimeter

Answer 30

= a millimeter

Question 31

Quantity of matter present in a object

Answer 31

Mqss

Question 32

Changing from one unit to another via conversion factors

Answer 32

Dimensional analysis

Question 33

Boiling point in kelvin

Answer 33

373

Question 34

Boiling point of Fahrenheit

Answer 34

212

Question 35

Freezing point in kelvin

Answer 35

273

Question 36

Freezing point in Fahrenheit

Answer 36

32