An element occurs naturally as a gas. It is also characterized by a very low level of reactivity with other substances. In which section of the
diagram would the element most likely be found?

A: 1
B: 2
C: 3
D: 4

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

What reaction is taking place? 02 + c3h8 = h20 + co2

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine