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Melting is a physical change, so the molecular structure doesn't change.
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∙ 11y ago
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How much heat energy would it take to melt a 20 kg block of lead that was at 24 degrees Celsius?
1,277,800 j
Why do ice turn into liquid water?
because they melt?? jkjkjkjk ice turn into water when the molecular forces(hydrogen bonding) between the H2O molecules fail to hold each other in place as a crystal.
How much energy is gained by 3 grams of ice when it changes to water?
No energy is gained. On the contrary, energy is required to make ice melt.
Do CD's melt?
yes you can melt one but it has to be
What is a physical change of matter?
A physical change in matter occurs when the shape or form of matter changes, but there is no chemical reaction. If someone were to melt a sugar cube, that would be an example of a physical change.
What in temperature can cause something to melt?
Temperature is just a name for "internal energy of grain / molecular / atomic / nucleon motion". Melting is changing from "grain dominant" motion to "molecular dominant" motion, as the energy released in forming the (usually) more stable grain structure is added back in.
Does Mercury melt lead?
Yes. The melting point of lead is 327.46 °C. The temperature of lava is definitely greater than that. hence it can melt lead.
What chemical can you use to melt lead?
Lead (or anything else) is melted by heat. There are various chemicals that can be used to produce heat. For example, a propane torch can melt lead.
When water changes to ice what kind of changes has occurred?
because it melt
How much energy is needed to melt 254 grams of l2?
This is a trick question because "I2" is the chemical symbol for MOLECULAR iodine (your question did not say melt Iodine, it said melt I2).Only gaseous iodine is composed of I2 molecules and as it is a gas it CAN NOT melt.
What changes in state will happen to the iceberg?
it will melt
What degree does lead melt?
It melts at 327C.
What 3 metals would melt on Venus?
The temperature on the surface of Venus is about 461.85 °C this hot enough to melt zinc which melts at 419.53 °C, lead which melts at 327.46 °C and tin which melts at 231.93 °C
What changes of state occurs in freezers if a power failure lasts 24 hours?
The particles melt causing great construction to the freezer which may lead to bigger issues like earthquakes.
What process does a substance changes from a gas to a liquid?
its not melt
How remove tin from lead?
you have to melt it! the lead sinks to the bottom because it is a heaver metal.
What are reversible changes?
changes which can be reveraed egwater freezes to icethen melt ice to watersome characteristics of physical changes ?
