the periodic table

Question 1

all group 1 metals have

Answer 1

high reactivity
malluable
low density
in a compound produce white solid.
soluble in water

Question 2

Cl2, Br2, I2 colours
(aquos)

Answer 2

Cl2 is pale yellow
Br2 is orange
I2 orange/brown

Question 3

mpt in group 1

Answer 3

decrease as you go down: Li not melting as well as Na

Question 4

malluablilty in group 1

Answer 4

more mallauble as you go down: easier to cut

Question 5

reactivity in group 1

Answer 5

more reactive as you go down : each reaction is easier to ignite so more reactive

Question 6

Licl, Na2CO3, K2CO3 state and colour

Answer 6

white solid

Question 7

Licl, Na2CO3, K2CO3 observation with water

Answer 7

dissolves to make colourless solution

Question 8

Licl, Na2CO3, K2CO3 state and colour

Answer 8

white solid

Question 9

halogen, halide

Answer 9

halogen= element in group 7
halide= an ion in group 7

Question 10

K observation with metal and observation with water

Answer 10

gray, cut with knife

same as Li, makes white solid, lilac flame

Question 11

Na observation with metal and observation with water

Answer 11

gray, cut with knife

same as Li, forms sphere, orange/yellow flame, makes white solid

Question 12

Li observation with metal and observation with water

Answer 12

gray

effervescing, makes white solid, temp.increase, li disappears

Question 13

all group 1 metals have

Answer 13

high reactivity
malluable
low density
in a compound produce white solid.
soluble in water

Question 14

periodic patterns mpt

Answer 14

group 1: decreases as you go down
group 2: increases as you go down

Question 15

periodic patterns reactivity

Answer 15

group 1: increases as you go down
group 2: decreases as you go down

Question 16

what are group 2 metals called

Answer 16

alkaline earth metals

Question 17

properties group 2

Answer 17

-mpt higher than group 1, because ions have a higher magnitude of charge and more delocalized electrons
-reactivity is lower than group 1, because ions lose 2 electrons instead of 1.

Question 18

properties transition metals

Answer 18

very high mpt: many delocalized e-s
high density
form ions w/ variable changes
form coloured compounds

Question 19

ions and colours:
Fe2+
Fe3+
Cu2+
Cr3+
Cr6+
Mn2+
Mn7+

Answer 19

Fe 2+ — green
Fe 3+ — orange/brown
Cu 2+ — blue
Cr 3+ — green
Cr 6+ — orange
Mn 2+ — faint pink
Mn 7+ — purple

Question 20

what are group 8 non- metals called

Answer 20

noble 8

Question 21

properties group 8

Answer 21

-unreactive due to full outer energy levels —> inert
-melting point increases as you go down, the atoms increase in size and therefore there are more inter-atomic forces
no bonding, exist as single atoms

Question 22

group 8 element and use:
He
Ne
Ar

Answer 22

He = balloons, airships (<dense than air
Ne = electric lights (produce colour with electricity)
Ar = light bulbs (inert atmosphere)

Question 23

how do halogens exist

Answer 23

as diatomic molecules (come in pairs, X2) held together with single covalent bonds

Question 24

F2 colours

Answer 24

s= X
l= X
g= pale yellow
aq= colourless

Question 25

Cl2 colours

Answer 25

s= X l=X g= pale green aq= pale yellow

Question 26

Br2 colours

Answer 26

s=X l=red/brown g=orange aq=orange

Question 27

I2 colours

Answer 27

s= grey l= X (sublimes) g= purple aq= brown/orange

Question 28

mpp/bpt and colour of halogens

Answer 28

increases as you go down, becuase the atom size increases. more surface area the more IMFs colour becomes darker as you go down

Question 29

test for halogens: Cl2

Answer 29

damp blue litmus paper-->red-->white hexane--> colourless

Question 30

test for halogens: Br2

Answer 30

damp blue litmus paper-->red--->white (slower) hexane -->orange

Question 31

test for halogen: I2

Answer 31

starch---> blue or black hexane--->pink

Question 32

iron + chlorine: bromine + iron:

Answer 32

iron(3) chloride- brown solid iron(3) bromide - brown solid

Question 33

all group 2 compounds are

Answer 33

white solids colourless aq

Question 34

what is amphoteric and which chemicals

Answer 34

acts as a acid and a base Al2O3, ZnO,SiO

Question 35

what is an alkali

Answer 35

base that dissolve

Question 36

if it is a base it has OH- or H+

Answer 36

more OH-

Question 37

if it is an acid it has OH- or H+

Answer 37

more H+

Question 38

if it is neutral it has more OH- or H+

Answer 38

neither or equal amounts

Question 39

what four chemicals make up air

Answer 39

1. nitrogen (78%) 2. oxygen (21%) 3. argon (0.97%) 4. carbondioxide (0.03%)

Question 40

Mpt lowest to highest in air

Answer 40

Ar N2/O2 CO2

Question 41

metal carbonate + acid --->

Answer 41

salt + water + carbondioxide

Question 42

uses for O2

Answer 42

ventilators/diving equipment welding

Question 43

uses for CO2

Answer 43

fire extinguishers(doesn't support combustion and is more dense than air dry ice

Question 44

metal + acid --->

Answer 44

salt + hydrogen

Question 45

uses for H2

Answer 45

hydrogen fuel

Question 46

uses for Cl2

Answer 46

water treatment/ swimming pool -----> HOCl kills bacteria poinson gas

Question 47

combining powers: 1.phosphate 2.sulfate 3.carbonate 4. nitrate 5. sulfite 6.hydroxide 7. ammonium

Answer 47

1. PO4, 3- 2. SO4, 2- 3. CO3, 2- 4. NO3, 1- 5. SO3, 2- 6. OH, 1- 7. NH4, 1+

Question 48

phosphorous + oxygen ----->

Answer 48

diphosphorouspentoxide P2O5

Question 49

phosphoric acid

Answer 49

H3PO4

Question 50

What colour flame does carbon and oxygen burn with

Answer 50

orange flame

Question 51

sulfur + oxygen --->

Answer 51

sulfurdioxide = SO2 = blue flame sulfurtrioxide = SO3

Question 52

sulfurdioxide + water -----> sulfurtrioxide + water --->

Answer 52

sulfurous acid = H2SO3 sulfic acid = H2SO4

Question 53

non-metal oxide bonding, state at room temp. , pH in water

Answer 53

covalent, gas (except: P2O5, SiO2), acids except SiO.

Question 54

metal oxides bonding, state at room temp. , pH in water

Answer 54

ionic, solid, base (except Al2O3, ZnO)

Question 55

what flame does Ca + O2 burn with

Answer 55

brick red flame

Question 56

Licl, Na2CO3, K2CO3 with flame

Answer 56

red, orange/yellow, lilac

Question 57

Cl with NaCl, NaBr, KI

Answer 57

NaCl- nothing NaBr- yellow to orange hexane turns orange KI- yellow to brown hexane turns pink

Question 58

Br2 with NaCl, NaBr, KI

Answer 58

NaCl- nothing hexane turns orange NaBr- nothing KI- orange to orange/brown hexane turns pink

Question 59

KI with NaCl, NaBr, KI

Answer 59

NaCl- nothing hexane turns orange NaBr- nothing hexane turns pink KI- nothing

Question 60

mpt in simple covalent

Answer 60

depends on size of atoms

Question 61

mpt in ionic

Answer 61

depends on maginitude of charge and size of particles

Question 62

Al2O3 and ZnO and SiO2 are...

Answer 62

amphoteric

Question 63

amphoteric

Answer 63

ability to act as a acid and base