Warm up 03-10-14 • Question: Which depends on gravity - mass or weight? • Answer: • Weight. Fw = mg • Goal: I will measure mass and weight, then graph and determine gravity.
Element of the day • 72 – Hafnium – Hf • Hafnium has a high melting point and is extremely resistant to corrosion even at high temperatures, so it is perfect for plasma torches, which are used to cut through steel.
Warm up • Donations • Lab 5A • Late work • Tonight’s HW • Pgs14-16 (only a on 16) • Donations • Late work / Test Corrections Agenda / HW