In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly? A. Se, 24 protons, 26 electrons B. Y, 39 protons, 36 electrons C. Sr, 38 protons, 38 electrons D. P, 25 protons, 25 electrons

Name the intersection of plane bpq and plane cpq.

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.

Salt in oceans comes from and of rocks