Chapter 1- The Chemical World

Question 0

Quantification

Answer 0

Involves measurement as part of observation

Question 1

Pressure

Answer 1

The result of collisions between gaseous molecules and the surfaces around them

Question 2

Chemistry

Answer 2

The science that tries to understand how matter behaves by studying how atoms and molecules behave
Science of the composition, structure and properties of matter, and the changes that matter undergoes

Question 3

Scientific Method

Answer 3

a way of learning that emphasizes observation and experimentation to understand the world

Question 4

Observation

Answer 4

The first step in acquiring scientific knowledge and measurement of some aspect of nature

Question 5

Hypothesis

Answer 5

A tentative interpretation or explanation of the observations

Question 6

Falsifiable Hypothesis

Answer 6

Has the potential to be proven wrong with further testing

Question 7

Experiments

Answer 7

Highly controlled observations designed to validate or invalidate hypotheses

Question 8

May confirm a hypothesis or show the hypothesis to be mistaken in some way

Answer 8

Results

Question 9

Scientific law

Answer 9

A brief statement that summarizes past observations and predicts future ones

Question 10

Sometimes a number of similar observations lead to the development of a

Answer 10

Scientific law

Question 11

Law of conservation of mass

Answer 11

In a chemical reaction matter is neither created nor destroyed

Question 12

Scientific theories are called

Answer 12

Models

Question 13

One or more well-established hypotheses may form the basis for a

Answer 13

scientific theory

Question 14

John Dalton

Answer 14

Established the atomic theory

Question 15

Atomic theory

Answer 15

All matter is composed of small, indestructible particles called atoms

Question 16

Composition

Answer 16

The identity and amounts of components of elements present

Question 17

Structure

Answer 17

Manner and arrangement of parts and bonding of atoms in molecules

Question 18

Mass

Answer 18

resistant to change in motion

Question 19

Weight

Answer 19

Mass affected by gravity and altitude

Question 20

An object will continue to move until something causes it to change

Answer 20

Galileo’s theory

Question 21

Chemical change

Answer 21

Change in chemical composition

Question 22

Physical change

Answer 22

Observed without a change in chemical composition

Question 23

Chemical properties:

Answer 23

Liquid is flammable

Question 24

Qualitative

Answer 24

Observed with the senses

Question 25

Tera (T)

Answer 25

10^12

Question 26

Giga(G)

Answer 26

10^9

Question 27

Mega(M)

Answer 27

10^6

Question 28

Kilo(K)

Answer 28

10^3

Question 29

Hecto(h)

Answer 29

10^2

Question 30

Dekka(da)

Answer 30

10^1

Question 31

Deci(d)

Answer 31

10^-1

Question 32

Centi(C)

Answer 32

10^-2

Question 33

Milli(m)

Answer 33

10^-3

Question 34

Micro(u)or (mc)

Answer 34

10^-6

Question 35

Nano(n)

Answer 35

10^-9

Question 36

Pico(p)

Answer 36

10^-12

Question 37

Femto ( f)

Answer 37

10^-15

Question 38

Precision

Answer 38

Closeness of repeated measurements

Question 39

Accuracy

Answer 39

Closeness of the average of your measurements to the true value

Question 40

Random error

Answer 40

Scatter, variation

Question 41

Systematic error

Answer 41

Directional

Question 42

39.37 in

Answer 42

1 m

Question 43

0.6214 mi

Answer 43

1 km

Question 44

2.205 lb

Answer 44

1 kg

Question 45

1 metric ton

Answer 45

1000 kg

Question 46

1.057 qt

Answer 46

1 L

Question 47

1 cm^3

Answer 47

1 mL

Question 48

1 acre

Answer 48

43,560 ft^2

Question 49

5280 feet

Answer 49

1 mile

Question 50

453.6 g

Answer 50

1 lb

Question 51

3.785 L

Answer 51

1 gallon