Definitions

Question 1

What is the definition of an isotope ?

Answer 1

Isotopes are atoms which have the same number of protons but have a different number of neutrons so have a different mass number

Question 2

What is a compound?

Answer 2

A compound is a substance formed when two or more elements are chemically combined

Question 3

What is meant by the term diatomic ?

Answer 3

Diatomic means that there are two atoms covalently bonded in a molecule

Question 4

What is metallic bonding

Answer 4

Metallic bonding is the attraction between delocalised electrons and the positive ions in a regular lattice

Question 5

What is an alloy ?

Answer 5

An alloy is a mixture of two or more elements at least one of which is a metal and the resulting mixture has metallic properties

Question 6

What is a nanometre?

Answer 6

A nanometre is 10-9m

Question 7

What is an element?

Answer 7

An element is a substance that consists of only one type of atom and it cannot be broken down into anything simpler by chemical means

Question 8

What is an atom

Answer 8

An atom is the simplest particle of an element that can exist on its own in a stable environment