What does the the release or absorption of energy indicate?

A. Physical Change

B. Chemical Change

C. Physical and chemical changes

D. Neither physical nor chemical changes

Which electron dot diagram represents a molecule that has a polar covalent bond

If kc = 7.04 * 10-2 for the reaction: 2 hbr (g) ⇌h2 (g) + br2 (g), what is the value of kc for the reaction: 1/2 h2 (g) + 1/2 br2 ⇌hbr (g)

What is an example of kinetic energy? Question 7 options: A frisbee flying through the air A car in the garage A box sitting on a shelf A ball lodged in a tree

What is the role of the activated complex in a chemical reaction?

What is the wavelength of radio waves? between 1 x 10-3 and 1 x 10-1 meters less than 1 x 10-11 meters more than 1 x 10-1 meters between 1 x 10-8 - 4 x 10-7 meters between 4 x 10-7 - 7 x 10-7 meters

Which substance is a diatomic molecule? a. he b. o2 c. co2 d. h2o?

What is the difference between the electronegativity values of sodium and bromine?

Which of the following elements is the most stable element? argon, manganese, phosphorus, robidium

List results of Chemical Reactions.

When you measure something in meters cubed, you are measuring