Altoms,elements,compounds,periodic Table

Question 1

Atom

Answer 1

An atom is the smallest part of an element that still has the properties of that element

Question 2

Element

Answer 2

An element is a substance that cannot be broken down into simpler substance by chemical reaction

Question 3

Molecule

Answer 3

A molecule is composed of two or more atoms chemically combined

Question 4

Compound

Answer 4

Is a completely new substance with its own properties, it is formed when two or more elements are chemically combined (usually by burning

Question 5

Isotope

Answer 5

Atoms of the same element which have different number of neutrons e.g. Carbon - 12 and carbon - 14 (same of carbon dating in history)