Definitions

Question 1

Group

Answer 1

A virticle column of the periodic table.

Question 2

Period

Answer 2

A horizontal row of the periodic table.

Question 3

Diatomic Molecule

Answer 3

A molecule containing 2 atoms of the same element bonded together.

Question 4

Electron Configuration

Answer 4

A representation of the electrons in an atom.

Question 5

Full Electron Configuration

Answer 5

An electron configuration that includes every electron in an atom.

Question 6

Condensed Electron Configuration

Answer 6

An electron configuration that only states electrons in the highest energy levels, based on the nearest noble gas.

Question 7

Neutron

Answer 7

A neutral subatomic particle that exists inside the nucleus.

Question 8

Subatomic Particle

Answer 8

A component that makes up, and exists within, the atom.

Question 9

Electron

Answer 9

A negatively charged subatomic particle that exists outside of the nucleus.

Question 10

Electrostatic Force

Answer 10

An attraction between objects of opposing charges.

Question 11

Melting Point

Answer 11

The temperature at which a solid becomes a liquid.

Question 12

Boiling Point

Answer 12

The temperature at which a liquid becomes a gas.

Question 13

Density

Answer 13

How closely packed atoms are arranged; the mass of a substance per unit of volume.

Question 14

Malleable

Answer 14

Able to be pressed into other shapes.

Question 15

Metalloid

Answer 15

An element that displays both metallic and non-metalic properties.

Question 16

Matter

Answer 16

Physical substances that have mass.

Question 17

Nucleus

Answer 17

The dense structure within the atom.

Question 18

Protons

Answer 18

A positively charged subatomic particle that exists inside the nucleus.

Question 19

Atomic Radius

Answer 19

Used to describe the size of an atom, which is measured by halving the distance between the nuclei of adjacent atoms.

Question 20

Valency

Answer 20

The combining power of an element as determined by the number of electrons in its outer shell.

Question 21

Ionisation Energy

Answer 21

The energy (in kJ mol -1) required by gaseous atom to remove an electron from that atom.

Question 22

Electronegativity

Answer 22

The attraction of a positively charged nucleus the negatively charged electrons of a neighbouring atom.