What did Rutherford conclude from his gold foil experiment? A.) The large deflections of alpha particles was caused by a positively charged center that repels the positive particles.

B.) Atoms are indestructible solid spheres, which is why the alpha particles bounced off the gold foil.

C.) Most of the volume of the atom consists of a positive cloud, and negative electrons are embedded in this cloud.

D.) The nucleus must have a neutral charge to balance the negative charge of the electrons.

Which of the following is a compound? a. carbon b. oxygen c. hydrogen d. water

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.