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- 1. Multiple Choice
What is an Atom?
Building block of elements
Neutron
Unit of mass
Atomic mass unit
- 2. Multiple Choice
Atomic Mass
Average number of different masses
Mass of an atom = to the number of protons and neutrons
1 amu
The SI atomic unit in a cell
- 3. Multiple Choice
Atomic Number
The number of Atoms in a cell.
The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
The atomic symbol that is on the periodic table.
Electron cloud in an Atom.
- 4. Multiple Choice
Electron
Negatively charged particle that spins around the outside of the nucleus.
Positively charged particle that spins around the outside of the nucleus.
Neutrally charged particle that spins around the outside of the nucleus.
None of the above
- 5. Multiple Choice
Electron Cloud
Building blocks of elements.
Unit of mass used to express atomic and molecular weights.
The area around an atom's nucleus where electrons are most likely to be found.
Particle of matter that defines a chemical element.
- 6. Multiple Choice
Isotope
Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons.
Element on the periodic table.
The center of a cell.
Particle that makes up an atom (protons, electrons, neutrons).
- 7. Multiple Choice
Mass Number
The total number of electrons and cells in an atom.
Cells
Atoms
The total number of protons and neutrons in an atom.
- 8. Multiple Choice
Neutron
Negative charge
The area around an atom's nucleus where electrons are most likely to be found.
Subatomic particle of about the same mass as a proton but without an electric charge.
Neutral Charge
Positive charge
Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons.
None of the above.
- 9. Multiple Choice
Nucleus
The area around an atom's nucleus where electrons are most likely to be found.
Particle that makes up an atom (protons, electrons, neutrons).
All of the aboive
Small, dense region consisting of protons and neutrons at the center of an atom.
- 10. Multiple Choice
Proton
The area around an atom's nucleus where electrons are most likely to be found.
Negative charge
positive electrical charge, equal and opposite to that of the electron.
Mass
- 11. Multiple Choice
Subatomic particle
Particle that makes up an atom (protons, electrons, neutrons).
Unit of mass used to express atomic and molecular weights.
The area around an atom's nucleus where electrons are most likely to be found.
Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons.
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