When two ions form an ionic bond, what type of compound is formed

When does water move between the surface of earth and the atmosphere

Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron? a) A mole of iron has more atoms. b) They both have the same mass. c) A mole of magnesium has more mass. d) They both have the same number of atoms.

An airplane cabin is pressurized to 5.80x10^2. What is the pressure inside the cabin in atmospheres?

What types of elements are useful for dating materials? A. metals B. nonmetals C. radioactive D. noble gases

Which change of state involves a release of energy? boiling condensation melting sublimation

Oxygen, nitrogen, and fluorine bond with hydrogen to form molecules. these molecules are attracted to each other by

If a substance consists of only one kind of atom, it is an ... A. mixture B. element C. solution

Why would a crash involving cars going faster do more damage than a crash going slow? explain using terms kinetic and potential and inertia. Science

Just as heat can denature enzymes, so can a change in the pH. Enzymes that normally work in an acidic environment in the body can become denatured if the pH becomes too alkaline.

Newton's second law of motion uses the formula which states that a force will cause a mass to accelerate. (f = m • a. rewrite the formula to solve for a.