chemistry test 1-2

Question 1

science

Answer 1

body of knowledge

Question 2

chemistry

Answer 2

center of science, deals with structure and compsition

Question 3

organic

Answer 3

compounds with carbon(drugs, flavors, plastics)

Question 4

inorganic

Answer 4

anything other than carbon(acids, bases, salts, metals)

Question 5

physical

Answer 5

interactions and transformations of chemicals

Question 6

analytical

Answer 6

“chemist”, identifies composition

Question 7

biochemistry

Answer 7

chemistry within living things(proteins, carbs, lipids, nucleic acids)

Question 8

theoretical

Answer 8

math and laws, research and development

Question 9

electro chemistry

Answer 9

charge and electron potential (batteries, current, corrosion)

Question 10

environmental

Answer 10

impact natural resources(Ozone, pollution, toxic waste)

Question 11

nuclear

Answer 11

atomic changes from a reaction(fission, fusion, radioactive decay)

Question 12

concerns of chemistry

Answer 12

chemical production causes pollution, by-products, side-effects, inherent dangers; science knowledge is at best incomplete, long term effects are always a concern

Question 13

EPA

Answer 13

Environmental Protection Agency- to control the pollution of the environment and preserve natural resources.

Question 14

FDA

Answer 14

Food and Drug Administration- testing and approval of consumer products to be put on the market

Question 15

OSHA

Answer 15

Occupational Safety and Hazard Administration- monitoring and labeling of chemicals in the workplace (chemical safety)

Question 16

ACS

Answer 16

American Chemical Society- provides current chemical literature and educates professionals in chemical fields.

Question 17

Classifying matter is based on…

Answer 17

complexity

Question 18

element

Answer 18

pure substance that cannot be further decomposed.

Question 19

mixture

Answer 19

only physically united, can be anything that’s not pure, has no formula

Question 20

compound

Answer 20

can be divided into 2 or more simpler components, exact formula

Question 21

filtering

Answer 21

separation of an insoluble ingredient (salt and pepper)

Question 22

sorting

Answer 22

selecting of an ingredient from various samples(mining)

Question 23

magnetism

Answer 23

removal of materials based on magnetic property(iron ore)

Question 24

distillation

Answer 24

parts collected based on boiling points(water purification)

Question 25

fractional distillation

Answer 25

separation of a mixture based on component parts

Question 26

extraction

Answer 26

dissolving out an ingredient by solubility(flavors from oils, stains)

Question 27

gravitation

Answer 27

separating by density(gold panning, wheat harvesting)

Question 28

periodic divisions

Answer 28

natural elements(1-92)(found in environment) lab elements(93-118)(artificial, lab discovery)

Question 29

vertical organization on the periodic table is divided by....

Answer 29

groups/families

Question 30

horizontal organization on the periodic table is divided by....

Answer 30

periods/rows

Question 31

metals are...

Answer 31

-defined by luster -ductility -malleability -good reflector of heat and light -good conductor of heat and electricity -divided by "staircase"(except hydrogen)

Question 32

nonmetals are...

Answer 32

-poor conductors -dull in color -brittle -many are gasses

Question 33

metalloids are.....

Answer 33

elements with characteristics of both metals and non metals

Question 34

noble gasses

Answer 34

nonreactive elements of the final group

Question 35

mass

Answer 35

amount of matter

Question 36

inertia

Answer 36

resistance that matter offers to change position or motion

Question 37

atom

Answer 37

smallest unit of an element

Question 38

element

Answer 38

pure substance, only 1 atom

Question 39

compound

Answer 39

2 or more elements chemically bonded

Question 40

substance

Answer 40

pure form of matter

Question 41

plasma

Answer 41

high temperature state where atoms lose electrons

Question 42

phase changes are all...

Answer 42

physical changes

Question 43

evaporation occurs

Answer 43

only on the surface of the liquid

Question 44

sublimation

Answer 44

solid to gas

Question 45

vaporization

Answer 45

a vapor is produced(any phase)

Question 46

physical property

Answer 46

characteristic determined without changing the identity of the material

Question 47

chemical property

Answer 47

characteristic defined because of a reaction (oxidation, corrosion, flammability, acid reacting, water reacting)

Question 48

SI units are...

Answer 48

a system of 10

Question 49

base units

Answer 49

can be measured directly

Question 50

derived units

Answer 50

combining units, calculations

Question 51

D=

Answer 51

M/V

Question 52

V=

Answer 52

M/D

Question 53

M=

Answer 53

(D)(V)