Lesson #4: Metals and Non Metals

Objective:- Identify the metals and non metals on a periodic

table and their characteristics

7.1 Using MetalsMetals and non metals in the periodic table

88 of the elements are metals21 of the elements are non metals

The elements on the left of the stepped line are metals.Please draw this line on your periodic table with a black marker.

7.1 Using Metals

Find 3 essential properties of metals for water pipes• Malleable• Do not react with water or air• Strong

More information:Lead is no longer used for water pipes because it can make poisonous solutions.

Metal choices……copper or lead

Use the cards handed out to decide on the best properties for the following situations

7.1 Using Metals

Find 4 essential properties of metals for saucepans

• Good conductors of heat• Do not react with water• Malleable• Strong

Metal choices……copper, aluminium or stainless steel

7.1 Using Metals

Find 4 essential properties of metals for jewellery

• Shiny• Hard• Malleable• Do not react with water or air

Metal choices……gold, silver, platinum

7.1 Using MetalsFind 3 essential properties of metals for electrical wiring

• Ductile• Good conductor of electricity• Do not react with water or air

More information:Copper is a better conductor than aluminium

Metal choices……copper, aluminium

7.1 Using MetalsFind 4 essential properties of metals for long-distance power cables

• Ductile• Good conductors of electricity• Low density• Do not react with water or air

More information:Copper is 3 times denser than aluminium

Metal choices……copper, aluminium

7.1 Using MetalsFind 4 essential properties of metals for aeroplanes

• Low density• Malleable• Do not react with water or

air• Strong

More information:Aluminium does not react with water or air because it forms a protective coating on its surface

Metal choice……aluminium

7.1 Using MetalsFind 4 essential properties of metals for light bulb filaments

• Ductile• Glow when hot• Very high melting points (so they don’t melt when they glow)• Good conductor of electricity

More information:Tungsten has the highest melting point of all metals (3410 ºC)

Metal choice……tungsten

7.1 Using MetalsFind 8 properties that most metals have• Strong• Solid at room temperature (melting point above 25 ºC)• Good conductor of electricity• Good conductor of heat• Shiny (at least when first cut)• Malleable• Ductile• Hard

Write a short definition of each of the properties (pg 45 science 14 book)

http://video.about.com/chemistry/Properties-of-Nonmetals.htm#

Non metals

- Tomorrow we will have a practical.- You will work in groups of 4.- Please bring one hammer per group of 4.- We will be in Lab 6 (Nelson’s classroom)- You must have goggles and a lab coat.