Metals, metalloids and nonmetalshttps://peda.net/id/1f53a9727902017-08-05T19:08:35+03:00https://peda.net/:static/532/peda.net.logo.bg.svg<div class="license">Tämän sivun lisenssi <a rel="license nofollow ugc noopener" href="http://creativecommons.org/licenses/by-nc-sa/3.0/">Creative commons CC BY-NC-SA 3.0</a></div>
Nickel, a metalhttps://peda.net/id/8f3dc87c7912017-08-05T19:47:31+03:00<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/5/51/20ct1909.jpg/1280px-20ct1909.jpg" alt="20ct1909.jpg"/><br/>
<ul>
<li>hard yet bendable</li>
<li>prone to quick temperature changes</li>
<li>naturally reacts to magnets</li>
</ul>2017-08-04T15:50:56+03:00Sulfur, a nonmetalhttps://peda.net/id/d6b8785a7912017-08-04T16:24:49+03:00<img src="https://upload.wikimedia.org/wikipedia/commons/2/2e/Sulfur.jpg" alt="Sulfur.jpg"/><br/>
<ul>
<li>brittle</li>
<li>burns when heated</li>
<li>is found in various forms with differing characteristics</li>
</ul>2017-08-04T15:52:56+03:00Silicon, something in-betweenhttps://peda.net/id/b62135b47912017-08-04T16:25:19+03:00<img src="https://upload.wikimedia.org/wikipedia/commons/7/7e/SiliconCroda_%28trans%29.png" alt="SiliconCroda (trans).png"/><br/>
<ul>
<li>shiny and metallic, yet brittle</li>
<li>lacks conductivity, yet forms conductive alloys</li>
</ul>2017-08-04T15:52:01+03:00Classifying the elementshttps://peda.net/id/5978692c7912017-08-05T17:16:04+03:00If you were given a sample of an unknown material, how would you determine its composition? Before turning to <a href="https://peda.net/p/janne.rytkonen/bilingual-chemistry/lab-basics/pos#top" class="uuid-95c46dd8-7821-11e7-826a-eaecf9f45fbc">Properties of substances</a>, you can obtain a rough estimate based on the following:<br/>
<ul>
<li>Is it a solid, a liquid or a gas in room temperature?</li>
<li>Is it hard or soft?</li>
<li>Is it shiny or matte?</li>
<li>Can you bend it without chipping, or is it brittle?</li>
<li>Does it have an odour?</li>
<li>Does it conduct electricity?</li>
</ul>
By answering these questions, you know whether to turn to the left or right side of the periodic table.<br/>
<ul>
<li><b>metals</b> on the left: they are usually solid, hard, shiny, malleable, and they conduct electricity</li>
<li><b>nonmetals</b> on the right: they lack the conductivity of metals, and in addition to resisting sudden temperature changes, they tend to evaporate rather easily</li>
</ul>
On their border in the table, there exist a few elements, called <b>metalloids</b>, that feature both metallic and nonmetallic properties. For example, silicon acts like a metal in its oxide, <a href="https://www.wolframalpha.com/input/?i=quartz" rel="nofollow ugc noopener">quartz</a>, and like a nonmetal in its <a href="https://upload.wikimedia.org/wikipedia/commons/3/37/Caulking.jpg" rel="nofollow ugc noopener">silicones</a>.2017-08-04T15:49:26+03:00