deck_15796904 (1)

Question 1

Molecular Ion

Answer 1

2/more atoms covalently bonded with an overall charge

Question 2

Avogadro’s Constant

Answer 2

Number of atoms in 12.000g of carbon-12

Question 3

Mole

Answer 3

the amount of substance which contains the Avogadro constant of atoms, molecules or groups of ions

Question 4

Molar Mass

Answer 4

The mass of one mole of a substance

Question 5

Anhydrous (salt)

Answer 5

a salt which contains no water of cryst

Question 6

Water of Crystallisation

Answer 6

Water chem bonded within a crystal

Question 7

Atomic Number

Answer 7

the number of protons (in the nucleus of an atom)

Question 8

Mass Number

Answer 8

The total number of protons and neutrons in the nucleus of an atom

Question 9

RAM

Answer 9

The average (weighted mean) mass of an atom of an element relative to 1/12th of the mass of an atom of carbon-12

Question 10

RIM

Answer 10

The mass of an atom of an isotope of an element relative to 1/12th of the mass of an atom of carbon-12

Question 11

Isotopes

Answer 11

Atoms which have the same atomic number but a different mass number (contain the same number of protons but a different number of neutrons)

Question 12

RFM

Answer 12

The average (weighted mean) mass of a formula unit relative to 1/12th mass of an atom of carbon-12

Question 13

RMM

Answer 13

The average (weighted mean) mass of a molecule relative to 1/12th mass of an atom of carbon-12

Question 14

First Ionisation En

Answer 14

The energy required to convert one mole of gaseous atoms into gaseous ions with a single positive charge

Question 15

Second ionis En

Answer 15

the energy required to convert one mole of gaseous ions with a single positive charge with gaseous ions with a double positive charge

Question 16

Third Ionis En

Answer 16

the energy req to convert one mole of gaseous ions with a double positive charge into gaseous ions with a triple positive charge

Question 17

Covalent Bond

Answer 17

The electrostatic attraction between a shared pair of electrons and nuclei of bonded atoms

Question 18

Co-ordinate Bond (Dative) bond

Answer 18

A shared pair of electrons between two atoms. One atom provides both electrons

Question 19

Octet Rule

Answer 19

When reacting, an atom tends to gain, lose or share electrons to achieve 8 in its outer shell

Question 20

EN

Answer 20

The extent to which an atom attracts the bonding electrons in a covalent bond

Question 21

Polar Bond

Answer 21

a covalent bond in which there is unequal sharing of the bonding electrons

Question 22

Delocalised Electrons

Answer 22

Outer electrons do not have fixed positions but move freely

Question 23

Intermolecular

Answer 23

Between neighbouring molecules (as opposed to intramolecular)

Question 24

vdwF

Answer 24

the attraction between instantaneous and induced dipoles on neighbouring molecules

Question 25

Permanent Dipole-Dipole Attraction

Answer 25

Attr between the positive end of the permanent dipole on a molecule with the negative end of the permanent dipole of a neighbouring molecule

Question 26

Hydrogen Bond

Answer 26

the attraction between a lone pair of electrons on a very electronegative atom i.e N,O,F in one molecule and a hydrogen atom in a neighbouring molecule, in which the hydrogen atom is covalently bonded to a very electronegative atom (N,O,F)

Question 27

Redox

Answer 27

Oxidation and reduction occur in the same reaction

Question 28

Oxidation

Answer 28

Loss of e/ Increase in oxidation state

Question 29

Reduction

Answer 29

Gain of e/ decrease in ox state

Question 30

Oxidising Agent

Answer 30

Electron acceptor

Question 31

Reducing agent

Answer 31

Electron donor

Question 32

Disproportionation

Answer 32

Oxidation and reduction of the same element in the same reaction

Question 33

Strong acid/ base

Answer 33

Fully dissociates in solution

Question 34

Weak Acid Base

Answer 34

Partially dissociates in solution

Question 35

Molarity

Answer 35

Concentration in moldm-3 expressed using M

Question 36

Concentration

Answer 36

Number of moles or mass present in a stated volume