A block of metal has a length of 3 centimeters, a width of 5 centimeters, a height of 10 centimeters, and a mass of 3,000 grams. Find the density of the metal in g/cm. a. 20 g/cm

c. 50 g/cm

b. 0.5 g/cm

d. 0.02 g/cm

Which of the following electromagnetic waves can create ions?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Fossil fuels are organic compounds that are made from