The elements B , Si , Ge , As , all can be classified as what type of element ? A. Noble Gases
B. Metals
C. Metalloids
D. Nonmetals

Give the orbital configuration of the phosphorus (p) atom.

Explain that newton first law, second law and third law of motion?

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?