Meanings

Question 1

Isotopes

Answer 1

Atoms of the same element with different no of neutrons and different masses.

Question 2

Relative atomic mass

Answer 2

Average mean mass of one atom of an element to 1 12th of the mass of an atom of carbon-12.Weighted for the abundance of the isotope

Question 3

Relative isotopic mass

Answer 3

Mass compared with 1/12th mass of carbon-12

Question 4

Proton

Answer 4

In magnitude to that of an electron

Question 5

Neutron

Answer 5

Present in all atomic nuclei expect those of ordinary hydrogen

Question 6

Electron

Answer 6

Has relative mass 1/200th that of a proton

Question 7

Atomic number

Answer 7

Determines its place on the periodic table

No of protons

Question 8

Mass no.

Answer 8

Number of protons and neutrons

Question 9

Polyatomic ions

Answer 9

Ions with more than one element bonded e.g hydroxide

Question 10

Theoretical yield

Answer 10

Amount of product produced assuming no products are lost and all reactants react fully

Question 11

Atom economy

Answer 11

How efficient a reaction is

Question 12

Covalent compound

Answer 12

Electrostatic attraction between shared electrons and the positive nucleus

Question 13

Dative covalent/coordinate bonds

Answer 13

Where one atom donates 2 electrons to an atom or ion

Question 14

Reducing agent

Answer 14

Lose electrons and are oxidised themselves

Question 15

Oxidising agent

Answer 15

Gain electrons and are reduced themselves