The elements most likely to form more than one type of ion are the

transition metals

alkali metals

halogens

alkaline earth metals

Case 1: your car is moving toward the west and the driver presses down on the gas pedal. You feel yourself being pressed back against the seat. During this instant, which direction is the car accelerating?

Why are there more lines in the sun's spectrum than in the hydrogen spectrum?

Xander lit his Bunsen burner. He then reached over the burner to get his chemicals. He performed the lab, but at the end, he dropped a test tube on the ground. He immediately told his teacher, who cleaned it up so he could finish the lab.

Express the displacement Δy of an object travelling with acceleration a during a time period Δt that has an initial velocity vi.

Describe a simple experiment to show that sound cannot propagate through vacuum

What are the minimum requirements for airplane operations under special VFR in Class D airspace at night?

Can the magnitude of a particle's displacement be greater than the distance traveled? explain.

An increase of 50 dB increases the sound intensity by a factor of

What is the definition of "potential energy"? A. Energy that is developed by an object while it's in motion B. The energy that a piece of matter has because of its position or because of the arrangement of parts C. An object that stays at rest D.

How does the current in a circuit change if the resistance is doubled?