Chemical Introduction

Question 1

Chemistry

Answer 1

Chemistry is the study of matter, its structure and how it changes.

Question 2

Matter

Answer 2

Everything is made up of matter. Matter is made up of microscopic particles called atoms.

Question 3

States of matter

Answer 3

Solids, liquids and gases

Question 4

All matter is either

Answer 4

An element, a compound or mixture

Question 5

Pure substance

Answer 5

Elements and compounds

Question 6

Impure substance

Answer 6

Mixtures

Question 7

Element

Answer 7

An element is a pure substance made up of only one type of atom.

Question 8

Compound

Answer 8

A compound is a pure substance made up of two or more different types of atoms chemically joined together.

Question 9

Mixtures

Answer 9

A mixture is an impure substance that is made up of more than one atom or molecule which are not chemically joined.

Question 10

Atoms

Answer 10

Atoms are the smallest particles of matter

Question 11

Sub-atomic particles

Answer 11

Protons (p+), Neutrons (n0), Electrons (e-)

Question 12

What lies inside a nucleus?

Answer 12

Protons and Neutrons

Question 13

What lies outside the nucleus?

Answer 13

Electrons

Question 14

Which sub-atomic particle(s) is heavier than the other?

Answer 14

Protons and neutrons are the heaviest whereas electrons are really light.