Which of the following is not a compound?

a. water

b. sugar salt

c. chocolate

d. chip cookies

At what temperature is a gas likely to have the lowest rate of diffusion? 15° 21° 24° 30°

Choose all that correctly complete the statement. Chemical reactions can ... A. create products more complex than the reactants. B. break down reactants into simpler products. C. give off energy as heat ... D. change one element into another element.

A substance is found to consist of 1.900g of silver, 0.250g of nitrogen, and 0.850g of oxygen. what is the percent by mass of oxygen in the compound?

An energy pyramid illustrates that energy in the form of (blank) is lost to the surrondings as it is passed from one organism to the next

When two fluorine atoms bond together in F2, what type of covalent bond do they form?

All of the following can be recycled except clothing aluminum cans compact fluorescent bulbs plastic drink bottles

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.0 L of water upon warming from 25 ∘C to 50 ∘C.

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure.

When you light a fire place what energy transformation takes place

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB