They are equal weight.
sand
They are both equal in weight.
No a lb of bricks and a pound of feathers is still a pound same with concrete and iron
These two quantities both weigh the same- 10 pounds.
Iron fillings are heavier.
Iron is heavier because iron is a metal and metals are heavier but silica is not a metal so silica is lighter than iron.
No, atomically Iron is a heavier element
Lead is heavier than iron.
Iron feels heavier than a feather because it is denser. Density is the amount of mass per unit volume, so even if the weights are the same, the iron is more compacted and takes up less space than the feather. As a result, the iron feels more substantial and gives the perception of being heavier.
Yes iron is very much heavier then plastic.
Flour is used in baking as well as cooking. The a punt of iron does vary by the type of flour being used. On average flour has 0.6 grams of iron per cup.
The wooden stool is heavier than the iron nail
Same. That's an old trick question but feathers were more commonly used than cotton.