How many atoms of copper are there in 95.5 moles of copper? blank x 10 blank
? atoms copper

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

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.