Period 3, Group 2, and Halogens

Question 1

list period 3 elements in order

Answer 1

Na Mg Al Si P S Cl Ar

Question 2

atomic radius ____ down period 3

Answer 2

decreases

Question 3

Across the period from Na to Si, the ions get ______

Answer 3

smaller

Question 4

Nuclear charge _____ across period 3

Answer 4

increases

Question 5

Electrical conductivity _____ from Na + to Al 3+, then ____ to silicon

Answer 5

increases decreases

Question 6

Conductivity and melting point ______from sodium to aluminum because the sea of delocalized electrons increase the charge of the metallic lattice

Answer 6

increases

Question 7

what element has the strongest metallic bond in period 3

Answer 7

aluminum

Question 8

________ is a metalloid

Answer 8

silicon

Question 9

Elements to the _____ of silicon are non-metallic, have weak id-id forces which make them easier to break

Answer 9

right

Question 10

in period 3, ionization energy ______ across the period

Answer 10

increases

Question 11

in period 3, electronegativity ______ across the period

Answer 11

increases

Question 12

elements in period 3 get more acidic or basic across the period?

Answer 12

acidic

Question 13

does argon react with oxygen?

Answer 13

no

Question 14

oxidation number increases or decreases across period 3

Answer 14

increases

Question 15

does aluminum oxide dissolve or react with water

Answer 15

no

Question 16

__________ is insoluble in water because water can’t break down the molecular structure, but can react in hot conc. alkali

Answer 16

silicone dioxide

Question 17

Covalently bonded non-metal oxides of P and S react with water to form what?

Answer 17

an acid

Question 18

Oxides of Na and Mg (ionic) react with water and produce ________ solutions

Answer 18

alkaline

Question 19

Insoluble oxides react with hot conc. NaOH to form what?

Answer 19

a soluble salt

Question 20

period 3 chlorides go from ______ to _______ across the period

Answer 20

ionic covalent

Question 21

period 3 ______ go from ionic metallic to just metallic across the period

Answer 21

chlorides

Question 22

melting point _______ down group 2

Answer 22

decreases

Question 23

reactivity ___________ down group 2

Answer 23

increases

Question 24

atomic radius ________ down group 2

Answer 24

increases

Question 25

Ionization energy ______ down group 2

Answer 25

decreases

Question 26

Metals react with dilute HCl to from a metal ______ and _____ gas

Answer 26

chloride hydrogen

Question 27

Group 2 metals burn rapidly in oxygen gas and form what?

Answer 27

white solid oxides

Question 28

Oxides of group 2 metals can be neutralized by what?

Answer 28

dilute acid

Question 29

Basic oxide + dilute acid -> ____ + ____

Answer 29

salt and water

Question 30

Magnesium and steam produce what?

Answer 30

magnesium oxide

Question 31

Solutions formed from reactions of group 2 oxides with water get more ______ down the group

Answer 31

alkaline

Question 32

Group 2 oxides react with water to form a what?

Answer 32

hydroxide

Question 33

Solubility of group 2 hydroxides _____ down the group

Answer 33

increase

Question 34

Alkaline hydroxides of group 2 metals will be neutralized by what?

Answer 34

dilute acid

Question 35

Barium sulfate forms as a what?

Answer 35

white precipitate

Question 36

Mg Ca Sr and Ba are all ________ __ _____

Answer 36

insoluble in water

Question 37

Carbonates will react in dilute acid, forming ______ + ________ + ______

Answer 37

salt water CO2

Question 38

Group 2 carbonates and nitrates decompose with what?

Answer 38

heat

Question 39

group 2 carbonates break down to a metal oxide and

Answer 39

CO2

Question 40

Temperature at which thermal decomposition of group 2 carbonates _______ down the group

Answer 40

increase

Question 41

what is formed in group 2 nitrate is thermally decomposed?

Answer 41

brown toxic gas

Question 42

list group 17 elements

Answer 42

F2, Cl2, Br2, I2

Question 43

The color of halogens gets _________ down the group

Answer 43

darker

Question 44

Atomic radius ____ down group 17

Answer 44

increases

Question 45

melting/boiling point ______ down group 17

Answer 45

increases

Question 46

halogens are _____ agents

Answer 46

oxidizing

Question 47

When a halogen reacts with a metal, the _______ gains the electron

Answer 47

halogen

Question 48

electronegativity _______ down group 17

Answer 48

decreases

Question 49

X2(g) + H2(g) -> 2_____(g)

Answer 49

HX

Question 50

thermal stability _______ down group 17

Answer 50

decreases

Question 51

bond energy _______ down group 17

Answer 51

decreases

Question 52

Cl- Br- and I- will react with conc. HCl and form a ______ gas

Answer 52

toxic