Test 1

Question 1

micro (μ) applied to meters

Answer 1

10^-6 meters

Question 2

mili (m) applied to meters

Answer 2

10^-3 meters

Question 3

centi(c) applied to meters

Answer 3

10^-2 meters

Question 4

deci (d) applied to meters

Answer 4

10^-1 meters

Question 5

kilo(k) applied to meters

Answer 5

10^3 meters

Question 6

1 inch in cm

Answer 6

2.54 cm

Question 7

significant figures (trapped zeros)

Answer 7

significant

Question 8

significant figures (leading zeros)

Answer 8

not significant

Question 9

signficant figures trailing zeros

Answer 9

only significant in decimal numbers

Question 10

rounding > 5

Answer 10

round up

Question 11

rounding < 5

Answer 11

round down

Question 12

rounding = 5

Answer 12

round up or down to the closest even number

Question 13

state of matter - rigid and possesses a definite shape

Answer 13

solid

Question 14

state of matterr - flows and takes the shape of its container

Answer 14

liquid

Question 15

state of matter - takes both the shape and volume of its container

Answer 15

gas

Question 16

state of matter - gaseous, contains appreciable numbers of electrically charged particles

Answer 16

plasma

Question 17

the force that gravity exerts on an object

Answer 17

weight

Question 18

there is no detectable change in the total quantity of matter present when matter converts from one type to another (Chemical change) or changes among solid, liquid or gaseous state (physical change)

Answer 18

Law of conservation of matter

Question 19

smallest particle of an element that has the properties of that element and can enter into a chemical composition

Answer 19

atom

Question 20

consists of two or more atoms joined by strong forces called chemical bonds

Answer 20

molecule

Question 21

elements of the same element that differ in mass

Answer 21

isotopes

Question 22

the number of protons in the nucleus of an atom

Answer 22

atomic number (z)

Question 23

total number of protons and neutrons in an atom

Answer 23

mass number (A)

Question 24

atomic charge

Answer 24

number of protons - number of electrons

Question 25

ion with a negative charge

Answer 25

anion

Question 26

positively charged ions

Answer 26

cations

Question 27

atom with a positive or negative charge

Answer 27

ion

Question 28

adding or subtracting numbers - decimal places (significant figures)

Answer 28

round the result to the same number of decimal places as the number with the least number of decimal places

Question 29

multiplying or dividing numbers - decimal places (significant figures)

Answer 29

round the result to the same number of digits as the number with the least number of significant figures

Question 30

Experiment with cathode ray gun - who did it and what happened

Answer 30

J.J. Thompson - led to the discovery of electrons

Question 31

oil drop experiement - who did it and what did it determine

Answer 31

Robert Millikan - measured the charge of an electron and its mass

Question 32

experiment where a beam of a particles were fired through a gold foil - who did it and what did it determine

Answer 32

Ernest Rutherford - discovered the positively charged nucleus

Question 33

1 mole of atoms 1 mole of molecules atomic weight in grams

Answer 33

6.022 * 10^23

Question 34

Elements that don’t exist in nature as individual atoms (two atoms permanently stuck together)

Answer 34

Diatomic Elements

Question 35

name the diatomic elements

Answer 35

Hydrogen Nitrogen Oxygen Fluorine Chlorine Bromine Iodine`

Question 36

Hill System Order (Writing Molecular Formulas)

Answer 36

Carbon first (if present) Hydrogen Second (if present) All other elements listed in alphabetical order