Lesson: Elements. Science Differentiation in action An element cannot be broken down into simpler...

Lesson: Elements

Science Differentiation in action

An element cannot be broken down into simpler substances by chemical means.

Copper

Science Differentiation in action

Gold nuggets are

made upof gold atoms.

Elements are made up of one type of atom.

A sheet of copper

is made upof copper atoms.

Science Differentiation in action

Elements are listed on a special table called the Periodic Table.

If a substance is not listed on the Periodic Table, it is not an element e.g. water (H2O), glass or wood.

If a substance is listed on the Periodic Table, it is an element e.g. copper (Cu).

Science Differentiation in action

The Periodic Table places elements that are metals on the left while non-metals are on the right.

metals

non-metals

Science Differentiation in action

Two examples of metals

Iron (Fe) is a hard silver grey

solid

Copper (Cu) is a reddish brown

solid

Science Differentiation in action

Two examples of non-metals

Carbon (C) can be a grey black solid

or a transparent solid

Sulfur (S) is a

yellow solid

Science Differentiation in action

Metals conduct heat and electricity.

i.e. metals allow heat and electricity to pass through them.

Science Differentiation in action

You must learn the symbols for these metals.

Copper

Zinc

Aluminium

Iron

Silver

Gold

(Cu)

(Zn)

(Al)

(Fe)

(Ag)

(Au)

Science Differentiation in action

You must learn the symbols for these non-metals.

Carbon

Oxygen

Sulfur

Hydrogen

Nitrogen

(C)

(O)

(S)

(H)

(N)

Science Differentiation in action

Metals are used in industry to make:

radiators electrical wire

saucepans jewellery

Science Differentiation in action

1. Can copper be broken down into simpler substances by chemical means?

Review Questions.

2. What two types of substance does the Periodic Table divide elements into?

___________ and ____________

3. Metals conduct (allow to pass through) ___________ and ________________.

Science Differentiation in action

How could you check if a substance was an element?

Question to think about!

hydrogen

oxygen