Midterm Exam

Question 1

What occupies most of the volume of an atom?

Answer 1

Electron

Question 2

Anion

Answer 2

Number of protons is less than number of electrons Has one or more extra electrons Net charge is negative

Question 2

What is the number at the top right of an element

Answer 2

Net charge

Question 3

Milli

Answer 3

10^-3

Question 4

What is the symbol for effective nuclear charge?

Answer 4

Zeff

Question 6

What is the approximate mass of a neutron?

Answer 6

1 amu

Question 6

What is the approximate mass of an electron?

Answer 6

0 amu

Question 7

Force is inversely proportional to what?

Answer 7

The square of the distance

Question 8

How many electrons can the k shell hold?

Answer 8

2

Question 8

What is the formula for density?

Answer 8

D=m/v

Question 8

What is the formula for speed?

Answer 8

S=d/t

Question 9

What has/ have a mass of about 1 amu?

Answer 9

Proton and neutron

Question 11

Mass number

Answer 11

The total number of protons and neutrons in the nucleus The approximate mass of the atom-the actual mass is slightly lower

Question 12

Cation

Answer 12

The number of protons is more than the number of electrons Is missing one or more electrons Net charge is positive

Question 13

What is the number of at the top left of an element

Answer 13

Mass number

Question 14

Ionic

Answer 14

Metals and non metals, strong

Question 14

Isotopes

Answer 14

Atoms of the same element with different mass number Have the same number of protons, different numbers of neutrons

Question 15

Nano

Answer 15

10^-9

Question 17

Atomic number

Answer 17

The number of protons in the nucleus The total positive charge in the nucleus Which element

Question 18

Outermost electrons

Answer 18

Valence

Question 19

What do like charges do?

Answer 19

Repel

Question 19

Force is directly proportional to what?

Answer 19

The magnitudes of the charges

Question 20

How many electrons can the L shell hold?

Answer 20

Up to 8

Question 22

Micro

Answer 22

10^-6

Question 23

Mega

Answer 23

10^6

Question 24

What is the approximate mass of a proton?

Answer 24

1 amu

Question 25

What is atomic weight

Answer 25

Sum of the weights of all the isotopes each multiplied by its percent abundance

Question 26

What occupies most of the mass of an atom?

Answer 26

Proton

Question 26

What happens to electrons as you right to left and down the periodic table?

Answer 26

Decreases

Question 28

What has a -1 charge?

Answer 28

Electron

Question 29

Covalent

Answer 29

Two non metals, weak

Question 32

Natural abundance

Answer 32

The percentage of atoms of each isotope

Question 33

Net charge

Answer 33

The number of protons minus the number of electrons

Question 34

What do opposite charges do?

Answer 34

Attract

Question 35

Centi

Answer 35

10^-2

Question 36

What does the attraction for electrons do as you go across the periodic table left to right and up

Answer 36

Increases

Question 37

What has a charge of zero?

Answer 37

Neutron

Question 38

Kilo

Answer 38

10^3

Question 39

What is the charge of a +1?

Answer 39

Proton