ASB + Energy Changes

Question 1

Element

Answer 1

A substance consisting of atoms which all have the same amount of protons (same atomic number)

Question 2

Ion

Answer 2

An electrically charged atom or group of atoms formed by the loss or gain of electrons

Question 3

Atom

Answer 3

The smallest unit of a chemical element

Question 4

Orbitals

Answer 4

The region of space around the nucleus of an atom where an electron is likely to be found

Question 5

Electron

Answer 5

A negatively charged subatomic particle

Question 6

Proton

Answer 6

A positively charged subatomic particle

Question 7

Neutron

Answer 7

A subatomic particle with no charge

Question 8

Acid

Answer 8

A corrosive substance with a pH less than 7. Turns blue litmus and universal indicator red. Contains H+ ion

Question 9

Base

Answer 9

A substance with a pH greater than 7. Turns red litmus and universal indicator blue. Contains OH- ion

Question 10

Lewis Structure

Answer 10

A diagram that show the bonding between atoms in a molecule and the lone pairs of electrons which may also exist

Question 11

State

Answer 11

The way in which a substance is, can be solid, liquid or gas

Question 12

Molten

Answer 12

Melted into a liquid state

Question 13

Tetrahedral

Answer 13

A term used to describe molecules and polyatomic ions that have one atom in the centre and four at the corners of a tetrahedron

Question 14

Trigonal Planar

Answer 14

A term used to describe molecules and polyatomic ions that have one atom at the centre and three at the corners of a triangle

Question 15

Trigonal Pyramidal

Answer 15

A term used to describe molecules and polyatomic ions that have one atom at the apex and three at the corners of a triangular (trigonal) base

Question 16

Linear

Answer 16

A term used to describe molecules in which atoms are in a straight line

Question 17

Bent/V Shaped

Answer 17

Bent shape