Which of the following elements is unique to nucleic acids when studying organic compounds?

carbon

hydrogen

phosphorous

oxygen

What is the process used for extracting metals from ores? A. ore B. s. lag C. alloy D. smelting

Which is the weakest type of attractive force between particles? 1. dispersion forces 2. ionic bond 3. hydrogen bond 4. covalent bond

Which property of water is likely to most significant in water's role ad a universal solvent? a. water molecules have positive and negative sides. b. water molecules have covalent bonds. c. water contains oxygen atoms. d.

What must occur for the enthalpy of solution to be negative? The process of separating the solvent particles from one another must release energy. The process of separating the solute particles from one another must release energy.

What property of matter best describes the way a typical alcohol thermometer works?

What kinds of scientific investagations involve making observations

According to the kinetic molecular theory, when a gas particle hits something what will happen?

Protons and neutrons are made from which of the following? hadrons down quarks only up quarks and down quarks up quarks only

Not all of the water falls as rain, snow, or sleet evaporates. What happens to the rest of the water?

58.5 million excess electrons are inside a closed surface. What is the net electric flux through the surface?.