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Topic 3 - The Atomic Structure
2. The modern atomic structure: Recalling concept facts and definitions
1. According to the modern atomic theory, the major portion of an atom is mostly 4) Protons
2) Electron
1) Hard sphere
3) Empty space
2. Subatomic particles can usually pass undeflected through an atom because the volume of an atom is
composed mainly by
1) Uncharged nucleus 2) Unoccupied space 3) Neutrons only 4) Protons only
3. Which particles are found in the nucleus of an atom?
1) Electron, only 3) Protons and electrons
2) Neutrons, only 4) Protons and neutrons
4. The nucleus of an tom is the part of an atom that
1) Consist mostly of empty space 3) Occupies most of the atom’s total volume
Teacher Preview Copy
Teacher Preview Copy
2) Has a negative charge 4) Contains most of atom’s total mass
5. Experiment evidence indicates that atoms
1) Have uniform distribution of positive charges 3) Contains a positively charged , dense center
2) Have uniform distribution of negative charges 4) Contains a negatively charged, dense center
6. Compare to the entire atom, the nucleus of an atom is
1) Smaller and contains most of atom’s mass 3) Larger and contains most of atom’s mass
2) Smaller and contains little of atom’s mass 4) Larger and contains little of atom’s mass
7. What are the three subatomic particles?
1) Positron, protons and neutrons 3) Protons, electrons and alpha particle
2) Positron, protons, and electrons 4) Protons, electrons and neutrons
8. The nucleons consist of
1) Protons and electrons 3) Electrons and positrons
h 2) Protons and neutrons 4) Electrons and neutrons
3. Subatomic Particles: Recalling concept facts and definitions
1. Which particle has a mass approximately one atomic mass unit and a unit positive charge?
2) A Proton
1) A neutron 3) A beta particle 4) An alpha particle
2. Which particle has approximately the same mass as a proton?
1) Alpha 2) Beta 3) Electron 4) Neutrons
3. Which subatomic particle has no charge?
1) Protons 2) Electrons 3) Neutrons 4) Beta
4. Which of the following particles has the least mass?
1) Protons 2) Positrons 3) Neutrons 4) Electrons
5. Which particles have approximately one atomic mass unit?
1) Protons and electrons 3) Electrons and positrons
4) Electrons and neutrons
2) Protons and neutrons
6. What is the charge and mass of an electron? 3) Charge of +1 and a mass of 1/1836 amu
1) Charge of +1 and a mass of 1 amu
2) Charge of -1 and a mass of 1 amu 4) Charge of -1 and a mass of 1/1836 amu
164 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
Topic 3 - The Atomic Structure
2. The modern atomic structure: Recalling concept facts and definitions
1. According to the modern atomic theory, the major portion of an atom is mostly 4) Protons
2) Electron
1) Hard sphere
3) Empty space
2. Subatomic particles can usually pass undeflected through an atom because the volume of an atom is
composed mainly by
1) Uncharged nucleus 2) Unoccupied space 3) Neutrons only 4) Protons only
3. Which particles are found in the nucleus of an atom?
1) Electron, only 3) Protons and electrons
2) Neutrons, only 4) Protons and neutrons
4. The nucleus of an tom is the part of an atom that
1) Consist mostly of empty space 3) Occupies most of the atom’s total volume
Teacher Preview Copy
Teacher Preview Copy
2) Has a negative charge 4) Contains most of atom’s total mass
5. Experiment evidence indicates that atoms
1) Have uniform distribution of positive charges 3) Contains a positively charged , dense center
2) Have uniform distribution of negative charges 4) Contains a negatively charged, dense center
6. Compare to the entire atom, the nucleus of an atom is
1) Smaller and contains most of atom’s mass 3) Larger and contains most of atom’s mass
2) Smaller and contains little of atom’s mass 4) Larger and contains little of atom’s mass
7. What are the three subatomic particles?
1) Positron, protons and neutrons 3) Protons, electrons and alpha particle
2) Positron, protons, and electrons 4) Protons, electrons and neutrons
8. The nucleons consist of
1) Protons and electrons 3) Electrons and positrons
h 2) Protons and neutrons 4) Electrons and neutrons
3. Subatomic Particles: Recalling concept facts and definitions
1. Which particle has a mass approximately one atomic mass unit and a unit positive charge?
2) A Proton
1) A neutron 3) A beta particle 4) An alpha particle
2. Which particle has approximately the same mass as a proton?
1) Alpha 2) Beta 3) Electron 4) Neutrons
3. Which subatomic particle has no charge?
1) Protons 2) Electrons 3) Neutrons 4) Beta
4. Which of the following particles has the least mass?
1) Protons 2) Positrons 3) Neutrons 4) Electrons
5. Which particles have approximately one atomic mass unit?
1) Protons and electrons 3) Electrons and positrons
4) Electrons and neutrons
2) Protons and neutrons
6. What is the charge and mass of an electron? 3) Charge of +1 and a mass of 1/1836 amu
1) Charge of +1 and a mass of 1 amu
2) Charge of -1 and a mass of 1 amu 4) Charge of -1 and a mass of 1/1836 amu
164 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
