Which phrase most accurately describes a chemical change?

You are an astronaut in space far away from any gravitational field, and you throw a rock as hard as you can.

Why dont objects such as a table collapse under the weight of air above them?

If the captain of ship A fires a missile, counts 10.0 s on his watch, and then fires a second missile, how much time Δt will the captain of ship B measure to have passed between the firing of the two missiles?

Which is an unintended consequence of the widespread use of pesticides on corn crops? increased amount of corn grown each year the rise of pesticide-resistant insects decreased cost of producing corn the deaths of insects that feed on corn

Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was banned in 1996. However, there are about 100 million auto air conditioners that still use CFC-12 (CF2Cl2).

What type of energy is formed when chemical bonds are broken? A. Chemical energy B. Thermal energy C. Radiant energy D. Light energy

The liquid contained in batteries that conducts electric charge is called the: solution, electrolyte, suspension, colloid

Someone jumped from a high altitude at 31,000m above the earth. he freefalled for 4 min and 36 secs with top speed of 988 mph

What does the law of reflection mean?

Compared with the peak wavelength given off by the sun, what is the peak wavelength given off by a hotter star? A.) shorter in wavelength and higher in energy B.) shorter in wavelength and lower in energy C.