Unit 2-Atomic Structure & Bohr Models

Question 1

Mass of a proton, neutron, electron.

Answer 1

1, 1, 1/2000 amu

Question 2

Atomic Number

Answer 2

(z) the number of protons in an atom

Question 3

Mass number

Answer 3

of protons +# of neutrons

Question 4

Neutrons determine the ________

Answer 4

isotope

Question 5

isotopes

Answer 5

atoms of an element that have the same atomic number but different number of neutrons (changes mass)

Question 6

Average Atomic Mass

Answer 6

the average mass of all the naturally occurring isotopes of an element
-found on the periodic table

Question 7

Electrons determine the ______

Answer 7

ion

Question 8

Protons determine the ___________

Answer 8

element

Question 9

-Can be found on periodic table
-symbolized by “z”
-=# of protons
-must be a whole number

Answer 9

Atomic Number

Question 10

-Can not be found on periodic table
-symbolized by “a”
-=# of protons +# of neutrons
-must be a whole number

Answer 10

Mass Number

Question 11

Charge of an Ion =

Answer 11

of protons-# of electrons

Question 12

Electromagnetic radiation

Answer 12

A form of energy that exhibits wavelike behavior as it travels through space

Question 13

Wavelength

Answer 13

the distance between corresponding points on adjacent waves

Question 14

Frequency

Answer 14

the number of waves that pass by a point in a given amount of time.

Question 15

Long wavelength= __________ frequency

Answer 15

low

Question 16

Low frequency= _________ Energy

Answer 16

low

Question 17

Photoelectric effect

Answer 17

emission from electrons from metal when light shines on it

Question 18

Dislodging electron depends on _____________, not intensity.

Answer 18

light frequency

Question 19

Quantum is _________ _________ to frequency.

Answer 19

directly proportional

Question 20

Quantum

Answer 20

amount of energy needed to move an electron from one energy level to another.

Question 21

Lower energy levels are:

Answer 21

-Closer to nucleus
-farthest apart from each other
-takes more energy to get to the next level

Question 22

Actual Atomic Mass

Answer 22

the mass of an individual isotope of an element

Question 23

Metalloid’s location on periodic table

Answer 23

Along the staircase on the right of the periodic table

Question 24

Metal’s location on the periodic table

Answer 24

Left of the metalloids (excluding hydrogen)

Question 25

Nonmetals location on the periodic table

Answer 25

Right of the metalloids (and hydrogen)

Question 26

Representative Elements

Answer 26

The headings starting with A

Question 27

Representative elements in the same group have similar properties:

Answer 27

a) same # of valence electrons
b) same oxidation # (ionic charge)

Question 28

Alkali Metals location

Answer 28

Group one (1A) (not hydrogen)

Question 29

Alkaline Earth Metals

Answer 29

Group 2 (IIA)

Question 30

Halogens

Answer 30

row 17 (VII A)

Question 31

Noble Gases

Answer 31

Row 18 (VIIIA)

Question 32

Lanthanides

Answer 32

La-Yb

Question 33

Actinides

Answer 33

Ac-No

Question 34

Transition metals

Answer 34

rows 3-12v

Question 35

Density formula

Answer 35

D=m/v