What are the three types of matter?

Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of which of the following?

What is the formula mass of beryllium chloride, becl2? express your answer to four significant figures and include the appropriate units?

Which scientist offered proof that atoms exist? a. Aristotle b. Democritus c. John Dalton d. Isaac Newton

What quantum numbers specify a 5p orbital?

If you were in a completely dark room, the room would still be "shining" in this type of light: A) X rays B) visible C) infrared D) ultraviolet

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal

What is done with the reactive sodium after the reaction to make sure the products are safe in an air bag?

Which of the following does not indicate a chemical change? precipitate formation crushing a solid into a powder color change gas evolution

Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?

What are the products of the alpha decay of Iodine-131?