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Does hot charcoal ruin concrete?
Charcoal burns pretty hot, as things go. It might not be a good idea to leave it on concrete, at least not in a big pile. There is a problem with leaving a pile of burning charcoal on concrete. Concrete or any stone does not conduct heat really well. Sure, these materials get hot on hot days, and hold heat well. But if you heat concrete or stone or ceramic with a very hot source (charcoal burns at something on the order of 1100°C or 2000°F on contact, ball park), something called differential expansion breaks up the surface of the material being heated. Take a breath and read on. The intense heat from a source will cause localized expansion of material. And not enough heat will be conducted quickly into the underlying material to keep the difference in the expansion rates between the surface material and underlying material from breaking off tiny pieces at the surface of the material. Stone can actually be cut by "burning through" it with a hot source. The stone is not actually burned away, but differential thermal expansion nibbles it away, and a hot torch can cut stone (or concrete) in this way. If you spread burning charcoal out on concrete, you'll probably be okay. (Ash will insulate it a bit.) But it might not be a good idea to leave it in a pile.
When is a material useful?
Any material is useful when someone uses it to make something.
What material is used to show the presence of a substance?
An indicator shows the presence of another substance.
What is something you use to protect the table from a hot pot?
Trivet
Is cork a material that can go on a hot plate?
No. Cork is a type of wood and is therefore flammable. Even if it doesn't catch fire the hot plate could still burn it.
What kind of material to make wrench?
Steel, metal, an very hot liquid from a boiler or something
What will happen when a cold material interacts with a hot material?
The heat will transfer from the hot material to the cold material. Heat tends to go where it is not.
What is that thing called where it shows you how hot or cold something is?
A basic mercury thermometer will shown temperatures. There are other devices available.
What is a material that shows strong magnetic effects?
ferromagnetic material
Where does hot material seem to be rising to the surface?
In Hawaii there is an island rising which is technically a volcano, so its hot. I think its called like lanai or something.... i'm not completely sure...
What is the purpose of a locater globe on a map?
It shows where something is in the world
What happens when a cold material interacts with hot material?
The heat from the hot material is transferred to the cold material. Given enough time, eventually the two materials will be the same temperature, and no more heat will be transferred between them.
What does a map key shows you?
It shows you the label of something
What is the temperature for hot working?
This varies from material to material. Aluminum can be as low as 500 degrees by some specs while steel can approach 2000 degrees while hot working. You need to be more specific on the material being hot worked.
What type of substance would you use as as insulating material for a hot mitt?
Silicon is a type of substance you can use as a insulating material for a hot mitt.
How do you become somthing in life when you are not that material?
By doing something meaningful!! or do you mean you are not physically here? In which case, what material did you want to be? I kind of like velvet. Stop watching MTV, and and reality shows and you may find some of the famous people in life are famous for something they have done, rather than for having money/things.
How did they invent the hot air balloon?
with material
