Melting point: The melting point of the substance is described as the temperature at which the substance changes from its solid form to the liquid form. At the melting point, the solid and the liquid form of the
Why does Aluminium oxide have to be molten for electrolysis? The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it. Aluminium oxide hasa very high melting point (over 2000°C)so it would be expensive to melt it...
Suggest why the melting temperature of magnesium oxide is higher than that of magnesium chloride,...Question:Suggest why the melting temperature of magnesium oxide is higher than that of magnesium chloride, even though both are almost 100% ion...
The poor adhesion of copper to the copper oxide formed when copper is baked in air at high temperatures results in poor adhesion of the Teflon™ industrial coatings. Because of reactivity at the high baking temperatures, Teflon™ coatings have relatively poor adhesion to magnesium and to ...
Dwight was famous foreating candywhen I met him after giving a talk about sugar. He comes up afterward with a little brown bag and he has this meek look on his face, and he pulls it out and he says, “Dr. Cate, can I show you something?” And he pulls out aReese’s Peanut But...
Roasting is a process in which the ore (mostly sulphide) is heated strongly in the presence of excess of air. The heating should be done at a temperature below the melting point of the ore. Sometimes roasting may not bring about complete oxidation : ...
Suggest why the melting temperature of magnesium oxide is higher than that of magnesium chloride, even though both are almost 100% ionic. What is the effect of impurities on the melting and boiling points of a substance? If crystallized acetylsalicylic acid is not dry, what happens to the melt...
Explain the trend in melting point of metals across period 3 elements. Can you explain why Manganese (IV) oxide is MnO_2 and not Mn_2O_4? Explain why calcium is generally more reactive than magnesium. What are some of the physical properties that distinguish the metallic eleme...
Explain why it is unlikely for magnesium to form a cation with a charge of +1. Why is CO2 not ionic? Why is iodine a solid at room temperature, while the other halogens are not? Explain why the copper element has two ion charges. ...
Melting Points and Energy:The melting point of a substance is a measure of the temperature that the substance needs to reach to turn from solid to liquid. Since melting points and energy are directly proportional, the higher the melting point of a substance, the more energy is...