1. What is the science of what matter is made of and how it changes?

The rate at which work is done compared to time

What type of wave is sound?

Does the lattice energy of an ionic solid increase or decrease as the charges or sizes of the ions increase?

What is the most reactive metal group

To obtain orange, green, or violet, which colors should be mixed?

A crude approximation for the x component of velocity in an incompressible laminar boundary layer is a linear variation from u = 0 at the surface (y = 0) to the freestream velocity, U, at the boundary-layer edge (y = δ).

Why did dad leave mom?

Sal drew the electron dot diagram of an aluminum atom as shown. How should Sal correct his diagram? He should add five more dots so that the atom obeys the octet rule. He should add ten more dots so that all thirteen electrons are shown.

What uses electricity

How do the elements in the Noble Gas family compare?