What makes a compound different from a molecule?

A.

contains 2 or more atoms

B.

held together by chemical bonds

C.

use of chemical symbols

D.

contains 2 or more different elements

What makes neon glow?

Do ionic bonds dissolve in methanol

Which Statement is one of the the tree parts of cell theory? (A) All cells come from other cells. (B) Plant and animal cells are exactly alike. (C) Cells grow like crystals. (D) Cells assemble themselves from whatever is around.

Why do atoms always have an overall neutral charge?

which statement describes acids? A - Acids dissolve in water to produce a solution that tastes bitter. B-Acids dissolve in water to produce a solution that reacts with metals to produce H2 gas.

Which statement is true according to the kinetic theory? 1. Moles of different gases with the same mas and temperature always have the same average density. 2.

A substance with a pH of 9 has A) no H30 + ions or OH - ions. B) more H30 + ions than OH - ions. C) more OH - ions than H30 + ions. D) the same number of H30 + ions as it does OH - ions.

Consider the following quantities used in thermodynamics: E, H, q, w, S, G. How many of them are state functions? a. 2 b. 0 c. 3 d. 1 e. 4

What are some good problem statements

A 5.00L reaction vessel is filled with 1.00mol of H2, 1.00mol of I2, and 2.50mol of HI. If equilibrium constant for the reaction is 129 at 500k, what are the equilibrium concentrations of all species?