Extra points! Classify each of the following as a physical change or a chemical change.

grinding glass:

rusting of iron:

burning a candle:

sanding wood:

You are to give ampicillin with a recommended dose of 25mg/kg to a child with a mass of 29kg. if stock on hand is 250mg/capsule how many capsules should be given?

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

Which three statements represent the benefits of performing experiments using computer simulations?