glossary

Question 1

ion

Answer 1

is a positively charged or negatively charged particle that loses or gains electrons to get a full outer shell

Question 2

Proton

Answer 2

a tiny particle that exists in the nucleus of every atom and has a positive electrical charge

Question 3

Electron-

Answer 3

A tiny particle that has a negative electrical charge and travels around the nucleus of an atom

Question 4

Neutron-

Answer 4

a tiny particle of matter that has no electrical charge and is part of the nucleus of all atoms except hydrogen

Question 5

Valence shell

Answer 5

-outer shell in an atom

Question 6

Atomic number-

Answer 6

the number of protons

Question 7

Mass number-

Answer 7

the total number of protons and neutrons in an atom

Question 8

Isotope-

Answer 8

Isotopes of an element have the same number of protons and electrons but a different number of neutrons

Question 9

AMU

Answer 9

atomic mass units

Question 10

Group-

Answer 10

going down, show valency shells and charges

Question 11

Period

Answer 11

go across, shows the amount of shells

Question 12

Cation

Answer 12

A positively charged ion that lost electrons

Question 13

Anion

Answer 13

A negatively charged ion that has gained electrons

Question 14

Halogen-

Answer 14

ny of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table.

Question 15

Transition Metals

Answer 15

middle of the periodic table-are the table of all living elements

Question 16

Alkali metals-

Answer 16

row 1

Question 17

Noble gas

Answer 17

-row 18

Question 18

Delocalised electrons-

Answer 18

an electron in an atom, ion, or molecule that is not connected to a single atom or covalent bond

Question 19

Metallic bonding-

Answer 19

between a pure metal or a group of mentals

Question 20

Electrostatic forces-

Answer 20

The electrostatic force is an attractive and repulsive force between particles are caused due to their electric charges.

Question 21

Ionic bonding-

Answer 21

a metal and an non metal

Question 22

Covalent bonding

Answer 22

two nonmetals bonded together

Question 23

Lattice

Answer 23

a repeating pattern of cations and anions

Question 24

Lewis dot diagram

Answer 24

bonds between atoms showing valence electrons

Question 25

Polyatomic ion

Answer 25

-ions that consist of more than one atom

Question 26

Double bond-

Answer 26

2 bonds

Question 27

Relative formula mass-

Answer 27

the sum of the relative atomic masses of the atoms