After heating iron in air iron oxides are obtained; these oxides have a lower density than iron.
Nothing unless they are heated. If they are heated it will become iron oxide. Which is the same material that we find the ground
Lead is denser than iron.
Lead is denser than iron. Lead has a density of 11.34 g/cm^3, while iron has a density of 7.87 g/cm^3.
that's easy, molecules become very active when its heated so.... when a heated the molecules expand allowing the soap to seem more denser which makes it lighter and able to float
It is on the surface
iron is much denser than water. So, steel is denser, too, because it is made from iron.
Iron plate is denser than feather. Densities of materials are typically measured in terms of mass per unit volume, so iron plate, being a metal, is much denser than a feather, which is made of lightweight keratin.
It means that mercury is denser than iron.
Actually, hot, less dense material rises, and cold, denser material sinks. Denser material will be heavier (per unit volume) and gravity therefore pulls it down. Less dense material has buoyancy and rises. It's very logical.
The density of Iron is a property of the Iron itself, and not related to how much you have of it.
Yes, a reaction will occur when copper is heated with iron oxide. The iron in iron oxide will react with the copper to form copper oxide and iron.
Yes, iron is denser than helium. Iron is a metal with a high density, while helium is a light gas that is less dense than most other elements.