Naila :]

Naila :]

Wednesday, April 17, 2013

Metals, Non-metals, and Metalloids


1. These are the physical properties, what are their definitions, that are used to distinguish between metals, non-metals, and metalloids?
Malleability- Its ability to melt allows it to transform into any form of shapes.
Luster- How a mineral appears to reflect light, and how brilliant or dull the mineral is.
Brittleness- firm but easily broken
Conductivity- how much electricity/heat a material can conduct
2. How are the light gray boxes that are labeled “C” classified? Explain your answer.
non- metals, they aren't metals, but also don't fit in another category so they fall under the non-metal catgory



3. What is wrong with the table below?
Non-metals
Magnesium
Calcium
Gold

none of the listed "non-metals" are non-metals

4. Compare and contrast metals, metalloids, and non-metals
metals are malleable, ductile, and good conductors of heat.
Non- metals are brittle, insulators
Metalloids have properties of both.
5. Which physical properties are the most important to use when identifying elements? Defend your answer.
metals or not metals, because it will tell you if it's a solid or a liquid. If you were to need to use a liquid, you wouldn't know if gold was the right choice because they weren't categorized.

6. Suppose you were given a list of unknown elements. How could you prove that the elements were metals, non-metalloids, or metalloids?
 I would search it up on a periodic table, because without it, I would have no knowledge of which is which.



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