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Bizmuth is a heavy metal that expands on cooling and contracts on heating. it is used for making lead free ammunition, especially for shotgun rounds and airgun pellets as it is considered non-toxic. It is also used in the glass making industry for making 'float' glass sheets.
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How does a thermometer detect temperature?
Matter generally expands as it warms, and contracts as it cools. In liquid thermometers, as the liquid heats and expands, it is directed up a tube with markings to show the exact amount of expansion. In Bi-metal thermometers, there is a strip of two different metals pressed together. These metals expand and contract at different rates. As a result, the strip will coil and uncoil with the rise and fall of the temperature. A needle attached to this coil can show the temperature.
Can aluminum produce sparks?
Depends what you heating source is. Generally no.. If you want to see sparks from heating a metal use Magnesium.
What is a piece of metal with cooling fins that can be attached to an integrated chip to dissipate heat?
It's called a Heat Sink.
What does metal from heaven come from?
As far as I know, there is no metal that comes from heaven. All the metal that is there stays there and all the metal here stays here.
What is a metal burr?
A metal burr is a small, thin edge of metal that is created when a piece of metal is machined. For example: when a chef's knife is sharpened, a thin piece of metal remains on the edge of the knife.
What state of matter expands with cold and contracts with heat?
Well, solids. For example, when you heat up metal is expands and when you freeze it, it contracts
What is a liquid metal that expands and contracts as the temperature changes and is the metal used in thermometers called?
It is dew or ozone
Is Eiffel Tower always the same height?
no ,Because when the temperature increases the metal expands and when the temperature is low the metal contracts
Why will metal doors work easily during the winter but stick during the summer?
Metal expands from heat and contracts in cold
Compare and contrast conduction and convection?
convection means when something is heated it expands or conducts eg. metal is heated it contracts when it is cooled it contracts.
Why bimetallic strip bend in curve instead of showing linear expansion on heating?
If one metal expands or contracts at a different rate than the other, and they are bonded together, as they are in a bimetallic strip, a curve is inevitable - it physically has to happen, if you think about it.
What is the scientific term for heating metal and then rapidly cooling?
Annealing is a term used for when metal is heat hardened
Why is it a good idea to run a metal lid under hot water?
yah its not gonna explode... actually, the real reason for this, is that- Property: Solids expand on heating and contract on cooling. Explanation: Sometimes, in winter, the metal lid cools down and it contracts and gets stuck on the mouth of the container. So, to separate it from the container, it is put under hot water. Thus, it gets heated and expands, and gets separated from the container.
Why does blacksmith heat the iron rim for a wooden wheel before putting it into place?
Heating makes the iron expand so the rim circle is bigger than when it cools. Thus when applied hot is shrink when in place, holding the wheel together tightly.
Fuel source that was used in china that impressed Marco?
the heating and then quick cooling of the metal adamantium
Why a tightly fitting metal cap is opened by heating it slightly?
The metal cap has a high expansion coefficient when temperature rises. As it expands and the grip loosens.
Why do you use mercury in thermometers if it is not a good conductor of heat?
- mercury is a liquid metal - cooling and heating are easy reversible - cooling and heating are rapid - the relation between the temperature and the thermal expansion of mercury is linear
