Can someone help me with my 9th grade honors intro to chemistry and physics short answer question?

Question

Ok so I have this paragraph or 2 to write for school tomorrow, and I've researched tons and I can't find a thing on it. Here's the question

We have to write about one substance that hardens when exposed to high temperatures, such as cement, clay (can't use that one, it was the example), cookie dough, mud, ect. We have to explain why it has these properties that allow it to harden, rather then soften and melt such as butter and chocolate.


Can someone PLEEEEASE help me?!

More details-- I need to know which properties give it the ability to harden, this is 9th grade science, not a college lab report. I'm just asking if anyone would happen to know a site where they tell you properties and such.

Answer 1

Did you find out why clay hardens when exposed to high temperatures? Is there something else that would behave the same way? You should be able to think of something simple on your own, without resorting to something exotic like the reference.

Answer 2

Water from Zero to 4 cenigrade. Allah (meaning The God) has made this so that fish may survive underneath the frozen water. The frozen water is lighter than the non frozen water and hence come up on the surface. Usually more you reduce temperature a substance becomes heavier but this is not the case with water. Quran which is the last and the final edition of all divine books and the only book which is protected in its original language letter by letter and word by word tells us that beofre big ban Allah's rule was on water and that He created every livng thing from water. Water has unique properties and it actively particiapates in all chemcial reactions within our body

Answer 3

Well, how about sugar.

When you heat sugar it decomposes into charcoal or carbon, which is harder than the sugar if compressed.

You could also think about making alloys, which are mixtures of metals that can be soft by themselves but hard when together in an alloy. Iron with Chromium, nickel, and carbon mixed at moltant iron temperatures and cooled to a sold makes stainless steel, which is much harder.