Starter:

Complete the STARTER SECTION on your worksheet!!

Title: Elements and Compounds

Date: Friday 28th November 2014

Underline with a ruler

Learning Objectives

Thursday 27th November 2014

Define an atom, an element and a compound

Describe what makes each element different

Identify atoms present in compounds using the periodic table

Draw the structure of a number of atoms

L.O. Define an atom, an element and a compound

Element

Atom

The smallest particle of an element that can

exist

A substance made up of only 1 kind of atom

Compound

A substance made up of 2 or more different

atoms chemically joined together

How do you know which element is which?L.O. Describe what makes each element different

O16

8

The smallest number tells you how many protons there are in an element.

The number of PROTONS determines which element it is!!

Task 2Tell me the elements –

Use the symbols to discover the sentence…

L.O. Describe what makes each element different21537

58

5316

27838

ScandiumIodine

NitrogenCerium

IodineSulfur

CobaltOxygenLithiumOxygen

ScINCe

IS

CoOLiO

Task 3When we write compound as symbols there are 2 rules:

If there are no numbers then there is 1 of that elementIf there are little numbers then there are that many atoms of that element

L.O. Identify atoms present in compounds using the periodic table

NaO2

Last Task!!L.O. Draw the structure of a number of atoms

Structure of an atom.PROTONS AND NEUTRONS GO IN THE NUCLEUS!!Electrons go on the outside!

How do you know how many?

The little number tells you the number of PROTONS and ELECTRONSTake the little number away from the big number tells you the NEUTRONS