Aneutron breaks down to form ?
a. a proton and an electron
b. two protons
c. a helium nucleus
d. an alpha particle

what particle decomposes to produce the electron of beta radiation?
a. electron
b. neutron
c. proton
d. positron

what is the change in atomic mass when an atom emits gamma radiation?
a. mass increases by 1
b. mass decreases by 1
c. mass remains the same
d. mass decreases by 2

what is the change in the atomic number when an atoms emits an alpha particle?
a. increases by 2
b. increases by 1
c. decreases by 4
d. decreases by 2

What type of matter is made of only one kind of atom

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.

Condensation happens when water vapor cools. true or false? ?