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Lesson 3 DATE \@ "dd MMMM yyyy" 02 June 2020Metals and Non metalsRead the information below, then answer the questions that follow.Metals are found to the left side of the periodic table. We use many of these metals due to their useful properties. For example, wires are often made of copper which conducts electricity and is ductile, which means it can be drawn into a thin wire. We use metals to make saucepans because they conduct heat well and have a high melting and boiling point. Metals are also malleable, meaning they can be bend into shape, such as for paperclips or drinks cans. Metals are also highly dense. Density is the amount of mass per unit volume and so a dense substance is a substance with a large amount of mass in a given space. Finally, metals are sonorous, they make a sound when hit, which is useful for bells. Non-metals are found on the right side of the periodic table. They are usually poor conductors of heat and electricity, which we call insulators. They also have lower melting points (Change of state between a solid and a liquid) and lower boiling points (change of state between a liquid and a gas). They are usually brittle (break/shatter easily). In contrast to metals, which are usually shiny when cut, non-metals are dull and are typically either solids or gases at room temperature.Copy out the questions below and write your answers in full sentences.Checkpoint questions:What makes metals a good material for saucepans?What two properties make copper useful for wires?What do we call materials that are poor conductors?What property defines an object that is hard but breaks easily?Copy the key knowledge table into your exercise books.Key knowledge- Do your look, cover, write check by learning the answers to the questions plete the sentences below in your exercise book.Recall Quiz: A ductile metal is a metal that can be… Metals that are good conductors of heat are used for… Malleable metals can be…A dense metal is a metal with a large amount of… A brittle substance is hard but…Copy the table in your exercise books and complete it with the listed properties.Recall Task: right250825High melting and boiling point.Low melting and boiling point.Thermal and electrical insulators.Thermal and electrical conductors.Low density.High density.Shiny when polished.DullBrittle as solids (break easily).Can be hammered into shape (malleable).Ductile00High melting and boiling point.Low melting and boiling point.Thermal and electrical insulators.Thermal and electrical conductors.Low density.High density.Shiny when polished.DullBrittle as solids (break easily).Can be hammered into shape (malleable).DuctileMetals Non-Metals PlenaryWrite your answers in complete sentences in your exercise books.State where you would find non-metals on the periodic table. What does the group number of an element tell us about its structure?State two properties of metals, giving examples.Define malleable.Absence work DATE \@ "dd MMMM yyyy" 02 June 2020Lesson 4Read the information below, then answer the questions that follow.In metals, the atoms are all the same size and arranged in regular rows. This means that the rows of atoms can slide over each other if a force is applied. This makes the metal softer and malleable. To make metals stronger we can add other elements to make a mixture, we call this mixture an alloy.262727999473800To make metals stronger we can add other elements to make a mixture, we call this mixture an alloy. In an alloy the rows of atoms are broken up by atoms that are different sizes. This distorts the regular rows so that they cannot slide over each other when a force is applied. This makes the alloy stronger than pure metals. Copy out the questions below and write your answers in full sentences.Checkpoint questions:What happens to the rows of atoms to make metals malleable?How are atoms in an alloy arranged?How are the atoms in an alloy arranged? Why are allows stronger than pure metals?Copy the key knowledge table into your exercise books.Key knowledge- Do your look, cover, write check by learning the answers to the questions below.Define alloy, giving examples.Mixture of two or more elements, one is a metal. E.g. Bronze, Brass and Steel.Describe the size of the atoms in a pure metal.The same size as one anotherDescribe the arrangement of the atoms in a pure metalIn regular rowsDescribe the size of the atoms in an alloy.Different sizes because more than one type of element is presentDescribe the arrangement of the atoms in an alloy.Irregularly Describe what happens to the rows of atoms when a pure metal is hit.The rows slide over each other Answer the questions below in your exercise book.Recall Quiz: Describe the size of the atoms in a pure metal?How are the atoms in a pure metal arranged?Describe the size of the atoms in an alloy?How are the atoms in an alloy arranged?What happens to the rows of atoms when a pure metal is hit?Would the atoms slide over each other in this metal shown here: Application Task – I doIs this an alloy or a pure metal? Justify your answer. I know this is a pure metal because all the atoms are the same size and they are arranged in regular rows. This means the rows can slide over each other when the metal is hit.Application Task – We do Copy and complete the question in your exercise book. Is this an alloy or a pure metal? Justify your answer. I know this is a (pure metal/alloy) because… This means the rows (can/cannot)…Application Task – You doCopy and complete the question in your exercise book. Is this an alloy or a pure metal? Justify your answer. I know this is a (pure metal/alloy) because… This means the rows (can/cannot)… ................
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