1) What is the charge of a proton? a) positive b) neutral c) negative 2) What subatomic particles are found in the nucleus? a) protons and electrons b) protons only c) protons and neutrons d) electrons only e) neutrons only 3) Which particle has a mass that is approximately the same as the mass of a proton? a) electron b) neutron c) both electrons and neutrons d) no particle has a similar mass as a proton 4) An atom is electrically neutral because the a) number of protons equals the number of electrons b) number of protons equals the number of neutrons c) nucleus is positive and electron cloud is negative d) neutrons balance the electrons and protons 5) Experimental evidence indicates that the nucleus of an atom a) has a negative charge b) contains most of the mass of the atom c) has no charge d) contains a small percentage of the mass of the atom 6) Which of these describes the nucleus of an atom? a) small b) large c) positively charged d) holds the mass of the atom e) contains protons and neutrons f) contain neutrons and electrons 7) Which particle has the least mass? a) a neutron b) a proton c) an electron 8) What particle has a mass of approximately one atomic mass unit and a positive charge? a) a neutron b) the nucleus c) a proton d) an electron 9) What particle is electrically neutral? a) a neutron b) electron c) a proton 10) Particle that has a mass of 1 amu is -- a) proton b) neutron c) electron 11) Which of the following describes an electron? a) positive b) negative c) 0 amu d) 1 amu e) located in nucleus f) located outside nucleus 12) Which of the following describes an proton? a) positive b) negative c) neutral d) 1amu e) located in nucleus f) 0 amu 13) Which of the following describes an neutron? a) positive b) negative c) neutral d) 1amu e) located in nucleus f) 0 amu

The Atom - Subatomic Particles

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