Chapter 1

Question 0

Organic chemistry

Answer 0

Carbon containing chemicals

Ex: Pharmaceuticals, plastics

Question 1

What is chemistry

Answer 1

A science that deals with the materials of the universe and the changes that these materials undergo

Question 2

Inorganic chemistry

Answer 2

Matter that doesn’t contain carbon

Ex: metals, minerals, semiconductors

Question 3

Physical chemistry

Answer 3

Heavy in math and physics
Often deals with atomic properties of substances
Ex: reaction rates, mechanisms, computations

Question 4

Analytical chemistry

Answer 4

Components/ composition of substances, majority of chemists

Ex: quality control, food, nutrients

Question 5

Biochemistry

Answer 5

The chemistry of living things

Ex: metabolism, molecular biology

Question 6

Scientific method

Answer 6

Observation 
Hypothesis 
Experiment 
Analyze data 
Retest

Question 7

Matter

Answer 7

Anything that has mass and occupies space

Question 8

Four basic states of matter

Answer 8

Solid, liquid, gas, plasma

Question 9

Things that are not matter

Answer 9

Energy, electricity, magnetic fields, sound etc.

Question 10

Wave particle duality

Answer 10

All matter has wave AND particle characteristics

Question 11

SEM

Answer 11

Scanning electron microscope

Question 12

STM

Answer 12

Scanning tunneling microscope

- allows to see groups of atoms

Question 13

Elements

Answer 13

Substances that contain one type of atom

Ex: aluminum, carbon, tin etc

Question 14

Compound

Answer 14

Substances that contain two or more different atoms,

The compound always has the same ratio of atoms

Question 15

Homogenous mixture

Answer 15

The same throughout aka solution

Sugar, water, salt water

Question 16

Heterogenous mixture

Answer 16

A mixture that has distinct regions/ layers aliquots taken from different layers will not be the same
Ex: sand, oil, flour, and water

Question 17

Aliquot

Answer 17

Samples taken from anywhere in a mixture

Question 18

Physical properties

Answer 18

A characteristic that can be observed or measured without changing the samples composition
Ex: odor, color, volume, state or matter, density, melting and boiling point.

Question 19

Chemical properties

Answer 19

The ability of a substance to form new substances, chemical changes are fundamental components of the substances
Ex: combustion reactions, rusting of iron

Question 20

Evidence for chemical change

Answer 20

Heat or light is emitted
Gas evolution
Formation of a precipitate
Change in energy 
Heat is released ( endothermic)
Heat is absorbed ( endothermic)

Question 21

Qualitative observation

Answer 21

Made using all five sense, these observations are not precise and do not involve numbers

Question 22

Quantitative observations

Answer 22

Are precise, involve data and graphs and measurements

Question 23

Uncertainty

Answer 23

Whenever a measurement is made a certain amount of estimation is required, every measurement has some degree of uncertainty

Question 24

Significant figures

Answer 24

The numbers recorded in a measurement ( all of certain numbers and the first uncertain number

Question 25

Scientific notation

Answer 25

A conventional method for writing numbers that are very large or very small