Some properties of liquid water are very different from those of solid water (ice). Explain why freezing is considered a physical change, even though the properties of water change when it freezes.

Which statement best describes why rate laws are important? to see if a chemical reaction can actually take place to determine how fast a chemical reaction will take place to see how much heat energy a chemical reaction releases to determine what

Solution 1 contains 3.5g of sodium chloride in 500 mL of water. Solution 2 contains 7.5g of glucose in 300 mL of water.

A transmission system at a radio station uses a blank to convert a direct current into a high frequency alternating current

What is the basic difference between primary and secondary succession? a. the presence of water b. the presence of air c. the presence of soil d. the presence of trees

A sample of phosphorus tri chloride has at STP occupies a volume of 12.3L. How many miles is the sample?

A scientific theory is a statement that describes what scientists expect to happen every time under certain conditions. a) true b) false

In what ways are microwave and ultraviolet radiation the same? In what ways are they different?

Deforestation most directly results in

What is the mass in grams of 4.30 moles of al?

What is the SI unit for amount of a substance?