Is this statement true or false? If one or more substances change into new substances, a chemical change occurred.

true

false

How air particles exert a pressure on the inside of the balloon

Which statement is best described as a atom

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.