Chemistry Mid Term Unit 2

Front 1

The _____ of a gas at STP equals 22.4 liters.

Back 1

MOLAR VOLUME

Front 2

Quantum numbers represent the area of probability of the location of _____ in an atom.

Back 2

ELECTRONS

Front 3

Chlorine has _____ unpaired electrons.

Back 3

1

Front 4

One mole samples of any gas will have the same _____ at the same temperature and pressure.

Back 4

VOLUME

Front 5

Iron, copper, gold and silver are all examples of _____.

Back 5

TRANSITION METALS

Front 6

The following electron configuration represents _____ 1s^2 2s^2 2p^3

Back 6

NITROGEN

Front 7

Sulfur has _____ valance electrons.

Back 7

6

Front 8

Ions of _____ have a 3- charge.

Back 8

NITROGEN

Front 9

Elements in group 16 form ions with a _____ charge.

Back 9

2-

Front 10

Each _____ in an atom is represented by a unique quantum number.

Back 10

ELECTRON

Front 11

In the P sub level, each orbital holds 1 electron before any holds 2; True or False?

Back 11

TRUE

Front 12

Elements like carbon have _____ that are explained by the process of hybridization.

Back 12

MODIFIED ELECTRON CONFIGURATIONS

Front 13

Standard temperature is _____.

Back 13

0 DEGREES CELSIUS

Front 14

An isotope of Ru-103 contains 44 protons and 59 _____.

Back 14

NEUTRONS

Front 15

An atom of _____ has 12 neutrons.

Back 15

SILICON-26

Front 16

After _____, electrons go into the 2p sub level.

Back 16

2d

Front 17

The mass of 1 mole of phosphorous equals _____

Back 17

30.974g

Front 18

The _____ sub level has 3 orbitals.

Back 18

P

Front 19

Being able to predict the properties of undiscovered elements was the biggest accomplishment of _____'s version of the periodic table.

Back 19

MANDELEEV

Front 20

_____ neutrons are present in the Al-28 isotope.

Back 20

15

Front 21

There are 6.02x10^23 particles in _____.

Back 21

1 MOLE

Front 22

The molar mass of magnesium is _____.

Back 22

95.95g

Front 23

1 mole of bromine has a mass of _____ grams.

Back 23

79.904

Front 24

To change from moles to _____ multiply by (molarmass/1mole).

Back 24

GRAMS

Front 25

The mass in grams of 6.02x10^23 atoms of _____ equals 24.305g.

Back 25

MAGNESIUM

Front 26

Neon is in the _____ element family.

Back 26

NOBLE GASES

Front 27

An ion of calcium has a _____ charge.

Back 27

2+

Front 28

Barium is in the _____ element family.

Back 28

ALKALINE EARTH METALS

Front 29

Elements in Group 2 form ions with a _____ charge.

Back 29

2+

Front 30

Neon has _____ valence electrons.

Back 30

8

Front 31

Lead is an example of a _____.

Back 31

P-BLOCK METALS

Front 32

Sulfur forms _____.

Back 32

ANIONS

Front 33

Iodine has _____ valence electrons.

Back 33

7

Front 34

Iron forms _____.

Back 34

CATIONS

Front 35

22.4 _____ of helium at STP contains 6.02x10^23 atoms.

Back 35

LITERS

Front 36

Elements in Group _____ have 5 valence electrons.

Back 36

15

Front 37

Chlorine is in the _____ element family.

Back 37

HALOGENS

Front 38

The molar _____ only works for gases at STP.

Back 38

VOLUME

Front 39

Sodium has _____ valence electrons.

Back 39

1

Front 40

Alkaline earth metals form ions with a _____ charge.

Back 40

2+

Front 41

The nonreactive elements are all in the _____ family.

Back 41

NOBLE GASES

Front 42

Potassium forms an ion with a _____ charge.

Back 42

1+

Front 43

_____ electrons are found in the s&p sub levels.

Back 43

VALENCE

Front 44

Copper forms _____.

Back 44

CATIONS

Front 45

The most reactive metals are in the _____ family.

Back 45

ALKALI METALS

Front 46

Lithium has _____ valence electrons.

Back 46

1

Front 47

_____'s main contribution to the periodic table was to reorder it according to atomic number.

Back 47

MOSELEY

Front 48

Phosphorous forms _____.

Back 48

ANIONS

Front 49

All of the _____ are in group 1.

Back 49

ALKALI METALS

Front 50

An ion of aluminum _____ electrons.

Back 50

LOSES 3