A small cube of iron has a density of 7.9g/mL. Would it float in the column or sink to the bottom?
A:Float
B-:Sink

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

Compare and contrast physical changes with chemical changes.

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.