Can occur because EM waves travel at different speeds through different mediums. *
Refraction
Reflection
Absorbtion
Transmition

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

An observation that requires measurement is called quantitative observable or qualitative

Based on its chemical properties, identify the position of each chemical family on the periodic table.