What forces causes a star to form from a nebula?

What the lewis dot structure for BeO

An orange is tossed upward at 21m/s. What is the velocity of the orange 3.5s later. What is the height of the orange at this time. Is the orange still traveling up or is it traveling down.

The total amount of energy in the universe is ...

Electromagnetic waves can behave like particles

The Milky Way galaxy was given its name because of what it looks like when viewed from Earth. true or false

How is the mass of a liquid substance affected after it freezes A) It increases. B) It decreases. C) It stays the same.

When a substance goes directly from a solid state to a gas state, as dry ice does, A. the line on the energy-vs.-temperature graph is horizontal. O B. it's called sublimation. I c. it's called deposition. O D. it's called fusion. E.

Three light bulbs are wired in series. What happens if one of these light bulbs burn out

How do you distinguish a pure substance from a mixture?

Does the size of the particles change as the substance changes state?