0
No metals expand under heat as they have more kinetic energy.
-> Correct and incorrect. As far as I know Iron is the only transitional metal to do this however it does shrink before it expands. In its solid state Iron is takes the metallic structure of base centered packing which is the least dense packing. However when it heats to a certain point the Iron ions are able to release another electron, increasing the attractive forces between the positive ion's kernel with the 'electron sea' and decreasing their radii. This allows the substance to become for dense, and it takes on face centered packing. Therefore it shrinks! Then when heated more, iron is not able to release any more electrons, as that would make it unstable, so the more kinetic energy you add, the more it will expand, going back to base centered packing :)
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoit depends on the metal. certain metals are resistant to heat while most metals do heat up. Welding is the practice of heating up metal.
Wiki User
∙ 13y agoyes aluminum does shrink when heated. It also melts when heated without turning red and when overheated, causes stress and strain in a process called distortion.
Wiki User
∙ 15y agoMost metals swell when heated
Wiki User
∙ 14y agoPretty much all of them
Wiki User
∙ 10y agothermal expansion characteristics
Add your answer:
Earn +20 pts
What is the balanced formula equation when aluminum chlorate is heated?
aluminium chloride and oxygen gas
Why steel tyres are heated before slipping them into the wheel?
Heat expands them ... when they cool they shrink and grip the wheel tightly.
When heated aluminum metal reacts with solid PbO Write the balanced molecular and net ionic equations for this single replacement reaction Include the physical state of each element or compound?
The balanced molecular equation for reaction of heated aluminum with solid lead (II) oxide is 2 Al (s) + 3 PbO -> Al2O3 (s) + Pb (s)*. The balanced ionic equation for reaction of heated aluminum with solid lead (II) oxide is 2 Al (s) + 3 Pb+2 (s) -> 2 Al+3 (s) + Pb (s)*. _________________ *Unless the aluminum is heated sufficiently to cause the reaction mixture to have a temperature above the melting point of lead; in that instance, the lead would be liquid rather than solid.
Why are saucepans mailey silver?
The high reflectivity of saucepans is an accidental happening. Indeed, they would be more effective if they were black. Most of them are made of either stainless steel, or of aluminum. Actually aluminum is a poor choice for pans in which fats or oils are heated, because the aluminum is porous (slightly) to these materials, and when they have seeped through, they char badly.
Why is aluminium powder flammable?
Aluminium reacts violently with oxygen (any aluminum surface will very rapidly be covered with AlO2 [aluminum oxide]. If you have a powder the surface area is large and the reaction when heated will be quick enough to generate flames. Steel wool will also burn!
Why would heat make an aluminum bag shrivel?
It is not aluminum, it only appears metallic. It is a polymer plastic and when heated the molecular structure changes, causing it to shrink and deform.
What is the chemical formula for aluminum oxide when heated?
Aluminum oxide is Al2O3 and when heated it is still Al2O3, so heating aluminum oxide does nothing to it.
What happens to leaves when heated?
they shrink and shrivel up
Why doesn't an inflated balloon shrink when heated?
Because as the balloon is heated, the gases on the inside of the balloon begin to expand and press out on the walls of balloon. If a balloon is refridgerated, the opposite is true: the gases on the inside of the balloon will begin to contract, causing the balloon to shrink.
If you have an iron plate with a hole in the middle and you heat the iron plate what will be the size of the hole after its heated?
the whole will shrink
Why does a balloon shrink when cooled?
because the particles of the compound, called atoms, vibrate more when heated and then when cooled the
What is the balanced formula equation when aluminum chlorate is heated?
aluminium chloride and oxygen gas
When materials on earth are heated do they shrink?
Typically no, when an object is heated, it will expand. Of course, there are exceptions to the rule. There is a temperature range in water that when heated, the water will actually shrink. But for the vast majority of cases, heat -> expand.True, but there is a material that also makes an exception to the rule. It is used mostly in Computer Maintainance jobs and classes at colleges. It is called HeatShrink. As the name implies, when this material is heated, it shrinks. It acts as a sealing jacket when splicing two wires together.
Does heated aluminum give off toxic fumes?
No, aluminum does not give off any toxic fumes that are harmful in anyway. It does not produce gases nor does it vaporize.
What will happen if aluminium is heated with zinc oxide?
no becauswe the aluminum is more reactive than the zinc.
What is the balanced chemical equation for the chemical reaction between manganese dioxide and aluminum powder .what happens if manganese powder is heated with aluminum oxide?
When manganese dioxide is heated with aluminium powder, the following reaction takes place: These displacement reactions are highly exothermic. The amount of heat evolved is so large that the metals are produced in the molten state. On the other hand when manganese is heated with aluminum oxide no reaction takes place as aluminum is more reactive than manganese and is placed higher in the activity series.
Can heated aluminum 140 f heated by the sun contaminate indoor air quality as air is heated by the aluminum and pushed back into the home by a fan?
The aluminum could break down over time, oxidize and then maybe those small alum oxide particles could get back to the home. To be safe, use an air filtration system in the A/C to prevent any of that dust from getting in. Questions? Call 1-800-701-2513
