Which of the following describes a chemical change

A. burning paper

B. freezing water

C. melting ice

D. bending a wire

Which theory suggests that the moon and the earth formed at the same time from dust and the solar nebula that formed the sun? A.) impact theory B.) co formation theory C.) capture theory D.) synchronous theory

3 m/s north is an example of a?

A car traveling at a speed of 30.0 m/s encounters an emergency and comes to a complete stop. How much time will it take for the car to stop if it decelerates at - 4.0 m/s^2?

What is the equation that defines work

As more and more energy is added to the atoms of a solid plastic, the plastic will first change into A. a harder solid. B. a thick liquid. C. a free-moving gas. D. a volatile plasma

What amount of heat is required to raise the temperature of 25 grams of copper to cause a 15º C change? The specific heat of copper is 0.39 J/gº C. 115 J 150 J 250 J 300 J

Plasma is the most abundant state of matter in the universe

What environmental effects are shared by all fossil fuels

Joseph runs 40 yards In 2.5 seconds. What Is Joseph's speed?

Unlike gases, water exerts no pressure. If there's a structural problem on a submarine, the submarine is not likely to be crushed as it descends. True or False?