Ceramics 20/11/2018

Ceramics 23/04/15 Starter: Look at the materials below and suggest the best material for each object AND explain the reason for your choice. 1. A school chair – wood, metal or plastic. 2. A cup for a child – plastic, ceramic or glass. 3. Shoes – synthetic leather or leather CompletTeacher notes This illustration contains several discussion points relating to the uses of alkali metals including: Man putting salt on his chips Using table salt, which is sodium chloride. Household goods in the shopping bag Sodium compounds are used in many household goods, including over cleaner and bicarbonate of soda. Batteries in a torch Lithium is used in batteries for many things, including torches. Street lamps Sodium is used in street lamps and causes the yellow glow. Fireworks Potassium compounds are used in fireworks. Aircraft Metal alloys of lithium are used to make the bodies of aircraft. e and then start annotating scene.

Ceramics materials are compounds What are ceramics? Ceramic means ‘of pottery’. Its made out of clay soil, that has been dug out of the ground and heated in a kiln oven. Clay an be easily shaped, and ceramics have excellent strength and hardness properties; however, they are often brittle in nature.  Ceramics materials are compounds Demonstration of brittle, put all my weight on a mug to show it is strong, then drop mug on floor so it smashes.

Activity 1: What are ceramics? You use things made out of ceramics EVERY day. Can you think of any? Write a list of 3 Three things I use daily that are made of ceramics are: 1………………….. 2…………………. 3…………………..

Review

How bricks are made

Activity 2: What do you think is the order for how ceramics are made Activity 2: What do you think is the order for how ceramics are made? Discuss in pairs

Review Activity: Use your list of the to draw a comic strip for making ceramics. Use pencil and ruler.

Activity: Use your list of the to draw a comic strip for making ceramics. Use pencil and ruler. Clay mixed with water to make soft Clay moulded Clay dug out of ground Clay fired in a kiln Finished product is used glazed

Ceramic Properties and Uses How do you think ceramics were used on one of these?

The space shuttle

Stretch before breaking (%) Activity: Using your knowledge of the properties of ceramics which materials from the table are likely to NOT be ceramics? Explain how you came to your answer. Material Conduct electricity Relative Hardness Melting point oC Stretch before breaking (%) A No 9.0 3532 5 B Yes 7.5 2100 10 C 2.0 130 72 D 8.4 4099 3

Not likely to be ceramic Stretch before breaking (%) Review Not likely to be ceramic Likely to be Ceramic Material Conduct electricity Relative Hardness Melting point oC Stretch before breaking (%) A No 9.0 3532 5 B Yes 7.5 2100 10 C 2.0 130 72 D 8.4 4099 3

Plenary Clay is a ceramic. The space shuttle is powered by a ceramic. All ceramics are heat resistant. Ceramics contain ionic bonds. Ceramics can conduct electricity. Ceramics are rare to find. Ceramics are brittle.