What is an Independent variable, a dependent variable, and a controlled variable?

Fish give off the compound ammonia which has a pH above 7. To which class of compounds does ammonia belong?

2. Which of these objects has kinetic energy? a. A ball moving through the air. b. A ball sitting on a table. c. A ball buried underground. d. A ball sitting on the edge of a cliff.

Using biofuels instead of fossil fuels because biofuels are renewable is an example of

Water filter project: using different types of filters to filter water, trying to figure out if the changes to the water would be physical, biological or chemical. the filters are: rocks charcoal radiological polyfill cotton cloth.

Why is it important to keep the fractures propped open?

One example of possible evidence of chemical reaction

True or False? Urea has a high solutiblity in water, due in part to its ability to form hydrogen bonds

Atomic weight of 20 elements

What information would you need in order to convert Molarity to % by volume

How to determine the charge of a polyatomic ion?