foundation chemistry

Question 1

what is giant metallic lattice

Answer 1

Li,,Be , Mg

Question 2

gaiant covalent lattice

Answer 2

B, C, Si

Question 3

simple molecular

Answer 3

P,S,F,Cl,Ne,Ar

Question 4

relative atomic mass

Answer 4

this is the mean mass of an element compared to 1/12 of the mass of an atom Carbon-12

Question 5

relative isotopic mass

Answer 5

is the mass of the isotope compared to 1/12 the mass of carbon-12

Question 6

shell

Answer 6

a group of atomic orbitals with the same main energy levels

Question 7

subshell

Answer 7

a group of the same type of orbitals

Question 8

orbitals

Answer 8

a region within an atom that can hold up to two electron with oppsite spin

Question 9

p oribal shape

Answer 9

DUMBELL

Question 10

s orbital

Answer 10

SPHERICALshape

Question 11

what is ionic bonding

Answer 11

this is the electrostatic attraction between positive and negative ions

Question 12

metallic bonding

Answer 12

this is the electro static between the electron (delocalized) and metal ions (positive ions ) cations

Question 13

Covalent bond

Answer 13

the strong electrostatic attraction between a shared pair of electron and the nuclei of the bonded atoms

Question 14

non- linear

Answer 14

104.5 2 bonded regions 2 lone pair

Question 15

octahedral

Answer 15

6 bonding angle 90

Question 16

trigonal

Answer 16

120 3 bonding angle

Question 17

linear

Answer 17

180 2 B.A

Question 18

tetrahedral

Answer 18

4 B.A 109.5

Question 19

Pyramidal

Answer 19

1 LONE PAIR 3 BONDING AREA 107

Question 20

metal hydroxide + acid

Answer 20

salt + water

Question 21

metal oxide + acid

Answer 21

salt + water

Question 22

metal + acid

Answer 22

salt + hydrogen

Question 23

ammonia + acid

Answer 23

ammonium salt \

Question 24

disproportionate reaction

Answer 24

same species (element) has been oxidised reduced ( because both happenened in the same element)

Question 25

enthaply change of combustion

Answer 25

this is the enthalpy change when 1 mole of substance is burned completelty in oxygen in a standard condition

Question 26

what is s block

Answer 26

The s-block elements are all those with only s electrons in the outer shel

Question 27

The p-block

Answer 27

elements are all those with at least one p-electron in the outer shell

Question 28

The d-block

Answer 28

elements are all those with at least one d-electron and at least one s-electron but no f or p electrons in the outer shell (up to 5d)

Question 29

The f-block

Answer 29

elements are all those with at least one f-electron and at least one s-electron but no d or p electrons in the outer shell