Which conclusion was drawn from the results of
the gold foil experiment?
(1) an atom is electrically neutral.
(2) an atom is mostly empty space.
(3) the nucleus of an atom is negatively
charged.
(4) the electrons in an atom are located in
specific shells.

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

What does x represent in the formula for the compound xcl4?

Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?