A student throws a ball with a force of 10.5 Newtons. The ball accelerates at 3.5 m/s2. What is the ball’s mass in kilograms?

Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air