The nonmetals in groups 6a and 7a a) end in -ate b) have a numerical charge that is found by subtracting 8 from the group number c) all have ions with a –1 charge d) lose electrons when they form ions

Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating

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 is the mass of 8 moles of sodium atoms