What does pH measure

A. the concentration of hydrogens ions in solution

B. the total number of acid molecules in solution

C. the concentration of oxygen atoms in solution

D. the total number of base molecules in solution

Why do athletes often eat lots of carbohydrates the day before a competition?

An example of an everyday device that uses semiconductors would be a drinking glass. True or False?

Select the correct answers (2 answers) stating what happens in Interphase A DNA Duplication B Chromosomes lining up in the middle of the cell C Growth D Cytoplasm division

Which occurrence is a major source of the gases that can produce acid rain

Which of these are chemical reactions? Check all that apply. A. Baking bread B. Cutting up vegetables for a salad C. Mashing potatoes D. Setting off fireworks

What is back and faward movement (Ear and sound)

The normal pacemaker of the heart is the

How do daughter cells get their dna

The creature in the photograph is a protist, which is composed of only one cell. This means that a protist A) cannot reproduce. B) is a living organism. Eliminate C) cannot survive in water. D) gets energy directly from sunlight.

What is a cost of using technology to transport water?