Rust forming on iron is an indication of which of the following?

A. atoms are being destroyed

B. A gas is forming

C. a chemical change is occurring

D. matter is being created

Two billiard balls with the same mass m move in the direction of one another. Ball one travels in the positive x-direction with a speed of V1i, and ball two travels in the negative x-direction with a speed of V2i.

Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top. Explain how

To accurately measure 25 mL of water, which is the best volumetric glassware to use?

An object is traveling with a constant velocity of 2.0 m/s. How far will it have gone after 38 s?

When using science to investigate physical phenomena, which characteristic of the event must exist?

Does heat rise or fall

Two small, positively charged spheres have a combined charge of 5.23 x 10^-5 C. If each sphere is repelled from the other by an electrostatic force of 1.00 N when the spheres are 2.

A car racer accelerates uniformly to a velocity of 135 m/s over a distance of 412 m. Determine the acceleration of the car.

Which of the following is the medium that creates sand dunes? a. water b. wind c. ice d. gravity

How many centimeters are in 24 meters