What property can be used to separate oil from milk? a. Magnetism
b. Density
c. Electricity

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Why are pipes bursting in the in extremely cold weather?

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.