The component of the nucleus that has mass but no electrical charge is the:
a. electron.
b. neutron.
c. proton.
d. none of these. - answerb. neutron.
The periodic table of the elements was developed by __________ in the late 19th
century.
a. Roentgen.
b. Rutherford.
c. Mendeleev.
d. Bohr. - answerc. Mendeleev.
Photons with the highest frequencies have the ____________.
a. highest velocity.
b. shortest wavelengths.
c. longest wavelengths.
d. lowest energy. - answerb. shortest wavelengths.
A moving object has ____________ energy.
a. electromagnetic.
b. potential.
c. kinetic.
d. nuclear. - answerc. kinetic.
The ability to do work is:
a. energy.
b. inertia.
c. power.
d. momentum. - answera. energy.
When an atom has the same number of protons as another, but a different number of
neutrons, it is called an __________.
a. isotone.
b. isobar.
, c. isomer.
d. isotope. - answerd. isotope.
When compared with a beta particle, the alpha particle is:
a. much smaller.
b. much larger.
c. more penetrating.
d. none of these. - answerb. much larger.
The intensity of radiation on an object is reduced with distance because the radiation
___________.
a. reduces its velocity.
b. loses its energy.
c. increases in wavelength.
d. is spread out over a greater area. - answerd. is spread out over a greater area.
The component of the nucleus that has a positive charge and mass is the:
a. electron.
b. neutron.
c. proton.
d. none of these. - answerc. proton.
The smallest quantity of any type of electromagnetic radiation is a(n) ________.
a. neutrino.
b. electron.
c. quark.
d. photon. - answerd. photon.
When the bond between two atoms is due to their sharing an outer-shell electron, this is
called a:
a. compounding bond.
b. molecular bond.
c. covalent bond.
d. ionic bond. - answerc. covalent bond.
What is the removal of an electron from an atom called?
a. irradiation.
b. ionization.
c. electricity.
d. pair production. - answerb. ionization.