1. Pure Substances can be broken down by physical changes.

True
False

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?

Match each statement with the state of matter it describes