Unit 3 Review

Question 1

Avogadro’s number

Answer 1

6.022 x10^23

Question 2

Periodic law

Answer 2

elements are arranged in order of increasing atomic number, their properties show a periodic pattern

Question 3

Group 1 of the periodic table

Answer 3

alkali metals

Question 4

group 2 periodic table

Answer 4

alkaline earth metals

Question 5

groups 3-11 of periodic table

Answer 5

transition metals

Question 6

Nobles gases group in periodic table

Answer 6

18

Question 7

S blocks of periodic table

Answer 7

group 1 and 2

Question 8

D block of periodic table

Answer 8

group 3-12

Question 9

p block of the of the periodic table

Answer 9

group 13-18

Question 10

f block of the periodic table

Answer 10

periods 4f and periods 5f

Question 11

These elements are usually solid at room temp. They are most reactive in the lower left corner of the table.

Answer 11

metal

Question 12

These elements are in the upper right corner of the periodic table

Answer 12

non metals

Question 13

most reactive non metal

Answer 13

flourine

Question 14

these elements lie on a diagonal line between metals and non metals.

Answer 14

metalloids

Question 15

these two elements are liquid at 25 C or 298 K

Answer 15

Hg and Br

Question 16

these elements are gasses at 25 C or 298 K

Answer 16

Noble gases, H, N, O, F, Cl

Question 17

most reactive metal

Answer 17

Francium

Question 18

the physical properties of these elements are shiny, good conductors (heat/electricity), dense, ductile , malleable

Answer 18

metals

Question 19

The chemical properties of these elements lose electrons to form positive ions, corrode easily.

Answer 19

metals

Question 20

physical properties of nonmetals

Answer 20

dull, poor conductors, brittle, not ductile, low density.

Question 21

what tends to gain electrons to form negative ions (electronegativity)

Answer 21

nonmetals

Question 22

the physical properties of these elements are solid, shiny or dull, ductile, malleable, conduct well.

Answer 22

metalloids

Question 23

the chemical behavior of an elements is determined by _____?

Answer 23

electron configuration

Question 24

what is the principle energy level

Answer 24

n

Question 25

Representative elements

Answer 25

Group A elements

Question 26

transition elements

Answer 26

Group B elements

Question 27

what is responsible for chemical reactions

Answer 27

valence electrons

Question 28

This group react with water to form an alkali solution

Answer 28

alkali metals, group 1

Question 29

this group are reactive, but not as reactive as group 1

Answer 29

alkaline earth metals

Question 30

this group only needs one electron to fill their outer shell. very reactive.

Answer 30

halogens, group 17

Question 31

this group has completely filled outer shells. they are non reactive.

Answer 31

noble gases.

Question 32

this group forms OH and H2 with water and oxides, peroxides, and superoxide's with oxygen

Answer 32

alkali metals

Question 33

these ions have a positive charge

Answer 33

cation

Question 34

these ions have a negative charge

Answer 34

anions

Question 35

metals tend to _____ electrons

Answer 35

lose

Question 36

non metals tend to ____ electrons

Answer 36

gain

Question 37

How does the ionic radius of cations and anions compare to their respective elements

Answer 37

Cations are smaller. Anions are larger.

Question 38

What scale do we use for measuring electronegativity?

Answer 38

Pauling scale

Question 39

what is the measure of the attraction of an atom for electrons?

Answer 39

electronegativity

Question 40

The minimum amount of energy required to REMOVE the most LOOSELY held electron from isolated, gaseous 1+ ion.

Answer 40

First ionization energy (IE1)

Question 41

the amount of energy required to REMOVE the SECOND electron from a gaseous 1+ ion.

Answer 41

Second ionization energy (IE2)

Question 42

what is the shielding effect?

Answer 42

effect where core electrons block valence electrons from the nuclear charge of the nucleus.