metals

Question 1

where do metals occur

Answer 1

occurs in metallic elements and alloys

Question 2

structure of metals

Answer 2

a lattice of cation and anion surrounded by delocalized e-s held together by electrostatic forces

Question 3

how do metals react

Answer 3

by losing electrons to form cations. the less energy required for this the more reactive the metal is.

Question 4

the more protons ….

Answer 4

the more energy is energy to lose electrons

Question 5

the more electronsit needs to lose…

Answer 5

the more energy it takes to lose them

Question 6

the more occupied energy levels…

Answer 6

the less energy it takes to lose the electrons

Question 7

observations in displacement

Answer 7

temp. increase
solid changes colours well as solution

Question 8

extraction

Answer 8

a chemical reaction to produce an element from its compound

Question 9

what are metals present as?

Answer 9

ores, which have formed over billions of years.
ores are mixtures of compounds with a high % of metallic elements

Question 10

the reactivity series

Answer 10

K
Na
Li
Ca
Mg
Al
Zn
Fe
Cu
Ag
Au

Question 11

electrolysis

Answer 11

uses electrical energy to decompose a compound

Question 12

iron ore

Answer 12

haemotite

Question 13

reaction 1 in extraction of FE

Answer 13

C + O2 —> CO2

Question 14

reaction 2 in extraction of Fe

Answer 14

CO2 + C —–> 2CO

Question 15

reaction 3 in extraction of Fe

Answer 15

3CO + Fe2O3 –> 2Fe + 3CO2

Question 16

removing impurities

Answer 16

CaCO3 —> CaO + CO2
CaO + SiO —> CaSiO3
used for roads

Question 17

metal oxide properties

Answer 17

insoluble in water, but gp 1 reacts
high mpt
conducts electricity when liquid or aqeuos

Question 18

how can you extract Cu and Ag

Answer 18

through decomposition
2CuO —> 2Cu + O2

Question 19

how can you extract gp1-3

Answer 19

thorugh electrolysis
cations gather at negative cathode, anions at positive anode

Question 20

how can you extract transistion metals

Answer 20

through carbon displacement
2ZnO + C —> 2Zn + CO2

Question 21

alloy

Answer 21

a mixture which contains a metal and at least one other substance
ions of different sizes disrupt the lattice in an alloy. making the metal harder since the ions cannot slide as easily

Question 22

reactivity of metals depends on

Answer 22

no. of protons- more protons more reactive
no. of electrons needing to be lost- more electrons the lower the reactivity
no. of occupied energy levels- more levels the higher the reactivity