<html> <h3>On Earth we find different types of materials like glass, plastic and wood. </h3> <p><img src="https://imgoat.com/uploads/7177163c83/43783.jpg" width="1250" height="450"/></p> <p><a href="https://imgoat.com/uploads/7177163c83/43783.jpg">image source</a></p> <p>Metals and non-metals are 2 classes materials can be divided in and have<strong> special properties</strong>. Properties is something you can say about a specific material like for instance you can say a solid takes up space and keeps its shape.</p> <p>If you want to make anything, you will have to first decide what is the purpose of the product (what do you want to do with it)</p> <p> If you want to build a desk, you are going to use wood or steel because it is strong. If you decide on the purpose you will be able to decide what type of material you will use.</p> <p><strong>Metals and non-metals differ from one another and have different properties.</strong></p> <h2>Metals</h2> <p> <img src="https://imgoat.com/uploads/7177163c83/43785.jpg" width="630" height="422"/></p> <p><a href="https://imgoat.com/uploads/7177163c83/43785.jpg">image source</a></p> <p>Metals are usually <strong>shiny</strong>. The light will reflect off the piece of metal and the surface of a metal is called the luster.</p> <p>Most metals <strong>feels heavy</strong> and their molecules (the parts it is made of) is packed closely together, so we say it is dense.</p> <p>Metals are <strong>good conductors</strong> of electricity and heat - this means the heat and electricity will move through it quickly. If you put one part of the metal in a fire and touch the part that is not in the fire a bit later it will also be hot. The reason is because the heat moves through the metal.</p> <p> <img src="https://imgoat.com/uploads/7177163c83/43786.jpg" width="509" height="339"/></p> <p><a href="https://imgoat.com/uploads/7177163c83/43786.jpg">image source</a></p> <p>We can make metal into sheets, which means it is <strong>malleable</strong> and can also make thin wire from it so we say it is <strong>ductile</strong>.</p> <p>Most metals can be <strong>heated</strong> to a high temperature and not change its shape. That is why people make pots from metals. Another reason is because it if a good conductor of heat, the pot will get warm fast.</p> <p>Where does metals come from? It is mined from the earth. Watch the video on the story of metals.</p> <p>https://www.youtube.com/watch?v=9l7JqonyoKA</p> <h2>Non-metals</h2> <p> <img src="https://imgoat.com/uploads/7177163c83/43787.jpg" width="638" height="479"/></p> <p><a href="https://imgoat.com/uploads/7177163c83/43787.jpg">image source</a></p> <p><strong>Non-metals have different properties from metals</strong>.</p> <p>Non-metals are <strong>not shiny</strong> and mostly dull - think of plastic.</p> <p>Most of the non-metals you <strong>can bend</strong>, but they are brittle which means it will break if you bend it too much.</p> <p>Non-metals are <strong>insulators</strong> - this means they do not conduct electricity and heat as well as metals - the electricity and the heat does not move through it quickly. This is why the copper wire in the electrical cord (which is a metal and a good conductor of electricity) is covered with plastic (an insulator) that you do not get shocked.</p> <p> <img src="https://imgoat.com/uploads/7177163c83/43788.jpg" width="304" height="166"/></p> <p><a href="https://imgoat.com/uploads/7177163c83/43788.jpg">image source</a></p> <h2>Comparing metals and non-metals (Summary)</h2> <p><img src="https://imgoat.com/uploads/7177163c83/43789.jpg" width="1364" height="958"/></p> <p><a href="https://imgoat.com/uploads/7177163c83/43789.jpg">image source</a></p> <ul> <li>Metals are mostly solid and strong where non-metals are soft and flexible like rubber.</li> <li>Metals are malleable and ductile where non-metals can be brittle like glass.</li> <li>Metals are shiny and non-metals are dull</li> <li>Metals feel cold if you touch it and non-metals are neither cold nor hot</li> </ul> <p>Watch the video on metals and non-metals</p> <p>https://www.youtube.com/watch?v=rl0IciM3db0</p> <p><img src="https://imgoat.com/uploads/7177163c83/43790.gif" width="379" height="120"/></p> <p>http://i.imgur.com/a0vQdRk.png</p> <p>Team South Africa banner designed by @bearone</p> </html>
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bro follow me n upvote any of my post... then i also follow u and upvote any of your post help me..i help u..
| post_id | 12,935,745 |
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| author | koushikcsc2 |
| permlink | re-anneke-the-difference-between-metals-and-non-metals-science-gr-4-5-20170915t190816843z |
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https://imgoat.com/uploads/4173cb38f0/29566.jpg
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A great science lesson plan about metals and non-metals. I love the contrast and the facts you gave about both. Thank-you so much! Have a great weekend!!! :D
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A lovely description of some basic chemistry concepts. Some nice images to go along with it to illustrate the difference between these two classes of elements. Good work.
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Thank you very much- appreciate the kind words
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