How heavy is lead?
Compare lead to other metals
Now get some other kind of metal: pennies are made of mostly zinc and some copper, or you could use forks or spoons, which are usually made of steel (iron). Hold some lead in one hand and about the same amount of another metal in the other hand. Which is heavier?
What about rocks or water?
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Bass Casting Sinkers. Order a pack, see how heavy they are!