Which of the following is an example of a chemical change?

melting a stick of butter

dissolving salt in water

using magnesium to displace hydrogen gas from water

If you are measuring how far a ball traveled in an experiment which example below could be an appropriate measurement? 20 liters 20 grams 20 meters 20 degrees Celsius

Georgia is jogging with a velocity of 4 m/s when she accelerates at 2 m/s2 for 3 seconds. How fast is Georgia running now?

If the density of an object is less than the density of water, what will the object do? A. Bob up and down B. Sink C. Float D. Move forward

The size and cultural characteristics of a group of people ultimately depends upon the soil and climate of the area. True False

At a race track, a car of mass 1150 kg crashes into a concrete wall at a speed of 85 m/s a. If the car comes to a stop when it hits the wall, what the magnitude of the impulse applied to the car? The car crashed into the wall, stopping in 0.

When a car turns a corner on a level road, which force provides the necessary centripetal acceleration? 1) gravity 2) normal force 3) air resistance 4) tension 5) friction

Use Newton's universal law of gravitation to explain why gravity is greater on Earth than on Mercury.

What is a magnetic field and how does it interact with magnetic materials?

What is significant about holden sitting on the radiator?

Which of the following occurs in meiosis that does not occur in mitosis 1 fertilization occur 2 body cells are made 3 sex cells are made 4 cell division occurs