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Why are the properties of Aluminum always the same while the properties of the lead - glass may vary?
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Gold is metal so is aluminum why is gold so expensive and aluminum so cheap?
Gold is much rarer (i.e. there is less of it and what there is is harder to find) than aluminum. There is also demand for gold due to special properties that it has that aluminum doesn't that increases the price. Gold is a much more attractive metal than aluminum. Gold does not corrode, while aluminum almost instantly corrodes on contact with air or water producing a hard transparent insulating coating on its surface.
Why iron is cheaper than aluminum?
every metal is priced based on scarcity, and ease of access. there's a lot more iron than aluminum in the ground... and aluminum's properties and usage for current products make it more expensive. it also cools very quickly, while still being lightweight and durable... making it very useful.
Is cotton a better insulator than aluminium foil and tissue paper?
No, cotton is not a better insulator than aluminum foil and tissue paper. Aluminum foil is a good insulator as it reflects heat, while tissue paper acts as a thermal barrier. Cotton, on the other hand, is not as effective of an insulator because it does not have the same reflective or thermal barrier properties.
Which method is appropriate for separating a mixture of iron and aluminum?
You could do this using a magnet, Iron filings are attracted to a magnet, aluminium filings are not.Hint: magnetism, investigate the relative magnetic properties of the metals.Iron is a ferrous material, and aluminum is non-ferrous. A magnet would separate the two materials as the iron would be attracted to the magnet while the aluminum filings would not. The term ferrous basically refers to any material which contains iron.
Why is mercury not wet even though its liquid?
Mercury does not wet glass due to one of it's most significant properties. Mercury will not cling to the glass that contains it.
Is break glass a physical?
yes, breaking glass changes the physical properties of the piece, while a chemical change would be removing one of the elements that make up the glass
Why glass ionomer cement not mixed on glass slab?
GIC has silicate 'GLASS' in it's powder and so while mixing on glass slab the polyacrylic acid attack the glass content of glass slab. This may even alter properties of GIC.
Is breaking glass a physical change?
Yes, as it's still glass. There is no chemical/molecular change.
Why does coloured glass conduct more heat faster than clear glass?
Because due to the properties of darker colored matter it absorbs heat and retains it while it is repelled or it passes through clear glass
How aluminum is a suitable material to use in making cans based on its physical and chemical properties?
Yes it is suitable because the can is not able to rust and will properly hold its position while what is in the can can not get rust on it. =]
Which is more metallic aluminum or silicon?
Aluminum, of course. Silicon is a metalloid while Aluminum is a metal.
Why are the edge of glass green?
Impure glass has traces of iron which absorbs red and blue, allowing for an apparent green color on the edge if the glass has signifcant depth, e.g., shelf glass. While it is possible to get purer glass, some green will remain as there will always be traces of iron.
Gold is metal so is aluminum why is gold so expensive and aluminum so cheap?
Gold is much rarer (i.e. there is less of it and what there is is harder to find) than aluminum. There is also demand for gold due to special properties that it has that aluminum doesn't that increases the price. Gold is a much more attractive metal than aluminum. Gold does not corrode, while aluminum almost instantly corrodes on contact with air or water producing a hard transparent insulating coating on its surface.
What elements would you expect exhibit properties most similar to those of aluminum?
The elements immediately above and below aluminum in the same column of a wide form periodic table: boron and gallium. As is usual for relatively light elements, aluminum is more like the element below it, gallium, than the one above it: Aluminum and gallium are both metals, while boron is a nonmetal. In compounds with oxyanions, however, boron is similar to aluminum compounds with oxyanions.
Is aluminum a renewable resource?
While aluminum can be recycled to be made into new aluminum things, aluminum itself is a non-renewable resource, so the answer is no.
Why iron is cheaper than aluminum?
every metal is priced based on scarcity, and ease of access. there's a lot more iron than aluminum in the ground... and aluminum's properties and usage for current products make it more expensive. it also cools very quickly, while still being lightweight and durable... making it very useful.
What is the difference between Tempered Glass and Annealed Glass and which one is better?
Tempering is the process to add properties to the raw glass and to make it Standard or Toughened. If tempered (Heated) and cooled slowly, it becomes standard glass on the other hand if tempered and cooled rapidly, it gains different properties and becomes tough or is called toughened glass. Check the link below.
