One difference between a hypothesis and a theory is that a hypothesis

Which one of the following statements is true? A. Neither chemical nor physical changes involve a change in appearance. B. Both chemical and physical changes can involve a change in appearance. C. Only chemical changes involve a change in appearance.

An element's atomic number is 58. How many protons would an atom of this element have?

Which factor does not affect the resistance of a material? A. thickness B. weight C. length D. temperature

A 50 kg woman is on a elevator. The elevator is accelerating downward at 3 m/s. A since the elevator is accelerating downward is this plus or minus

Explain why you weigh less on a mountain than at sea level.

Explain the roles of Earth's own energy sources and solar energy in the rock cycle

In order to merge into highway traffic, a car accelerates along a 100.0 m on ramp from rest to 25.0 m/s. How much time does this take?

Muscle control is the ability to quickly change directions and make complex movements

According to the first law of thermodynamics, what could happen when heat is added to a system? The internal energy of the system decreases. The heat is turned into work done by the system. New energy is created within the system.

How does a parallel circuit differ from a series circuit? A. A parallel circuit has one path for electrons, but a series circuit has more than one path. B. A series circuit has one path for electrons, but a parallel circuit has more than one path. C.