Magnificent metals chemistry year 7.pptx

chemistry year 7

1. Magnificent metals

2. Metals and Non-Metals What are the properties of a metal? sodium gold calcium copper iron neon carbon sulfur helium nitrogen

3. Metals and Non-Metals What do you notice about where the elements are positioned in the periodic table?

4. Metals and Non-Metals What do you notice about where the elements are positioned in the periodic table?

5. Metals and Non-Metals Metals are found on the left of the stepped line and non-metals on the right. Draw the line on your periodic table and label the metals and non-metals. Hydrogen is a non-metal but it is often put in the middle. metals non-metals

6. Metals and Non-Metals Many non-metals have low boiling points so are gases at room temperature. All metals, apart from mercury, are solids at room temperature. What does this tell you about their melting points? Metals have high melting points. solid liquid gas State at room temperature:

7. solid liquid gas State at room temperature: Metals and Non-Metals Can you tell whether an element is a metal or non-metal from its state at room temperature? If an element is a gas at room temperature, we know it is a non-metal. If it is a liquid or a solid, it could be a metal or a non-metal.

8. Properties of a material describe what is like and what it does. Physical properties: Properties that you can observe or measure without changing the material Properties of Metals Chemical properties: Describe how substances change in chemical reactions .

9. Properties of Metals Metal State and appearance: high melting points and shiny good conductor of heat: Copper can prevent overheating of computer Changing shape: malleable (can be hammered into different shapes) and ductile (can be pulled into wires) Strength: strong sonorous good conductor of electricity: Al used for power cables and Au in a cell phone

10. A substance that… conducts electricity is shiny is not brittle is malleable is ductile Metal or Non-Metal? metal