Atomic Structure Quiz

atomic structure quiz

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Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.

The hydrogen atom (H) contains only one proton, one electron, and no neutrons. This can be determined using the atomic number and the mass number of the element (see the concept of atomic numbers and mass numbers).

 

Atomic Structure Quiz

 

 

Atomic Structure Quiz Answers

1. All elements are composed of

  • atoms
  • compounds
  • neutrons
  • molecules

2. What is the mass number of carbon (C)?

  • 12
  • 6
  • 13
  • C

3. How many electrons are in an atom of carbon (C)? (Remember APE! Atomic Number = # of Protons and # of Electrons)

  • 6
  • 13
  • 12
  • C

4. How many electrons are in an atom of carbon (C)? (Remember APE! Atomic Number = # of Protons and # of Electrons)

  • 6
  • 12
  • 13
  • C

5. How many neutrons are in an atom of sodium (Na)?  (Remember M-A=N! Mass # – Atomic # = Neutrons)

  • 12
  • 6
  • 13
  • C

6. What is the mass number of sodum (Na)?  (Don’t forget to round!)

  • 23
  • 6
  • 12
  • C

7. Atoms of the same element must always have the same number of _________

  • isotopes
  • neutrons
  • protons
  • electrons

8. The dense, positively charged mass located in the center of the atom.

  • nucleus
  • isotope
  • proton

9. The _________ of an element equals the number of protons in an atom of that element

  • atomic number
  • isotopes
  • atomic weight

10. The __________ of an atom is the sum of the protons and neutrons in the nucleus of that atom.

  • atomic weight
  • isotope weight
  • atomic number
  • mass number

11. Number of protons in an atom of an element.

  • atomic mass
  • isotopes
  • atomic number
  • proton count

12. Where are electrons found in an atom?

  • in the atomic number
  • inside the nucleus
  • outside of the nucleus
  • in the electron zone

13. Where are protons and neutrons found in an atom?

  • inside the nucleus
  • in the electron zone
  • outside of the nucleus
  • in the atomic number

14. An element will always have the same number of ________.

  • protons
  • atoms
  • isotopes
  • neutrons

15. What is the atomic number of gold (Au)?

  • 79
  • 4
  • 196
  • Au

16. How many protons does gold (Au) have? (Remember APE! Atomic Number = # of Protons and # of Electrons)

  • 79
  • 4
  • 196
  • Au

17. Which atomic particles will you find inside of the nucleus of an atom?

  • Electron & proton
  • Proton & Neutron
  • Neutron & Electron

18. Which atomic particle has a negative charge?

  • Electron
  • Proton
  • Neutron

 

Terms & Answer Keys to Learn

atom
the smallest particle of an element that keeps its chemical properties
John Dalton
in the early 1800’s came up with his own atomic model that proposed that all matter is made up of individual particles called atoms which cannot be divided.
Dalton’s theory
1. elements are composed of atoms
2. atoms of the same element have the same mass (WRONG)
3. compounds contain atoms of more than one element
4. in a compound, atoms always combine in the same way
J.J. Thompson
conducted some experiments with electricity and matter. He discovered that electricity consisted of negatively charged particles.
electron
negatively charged particle
proton
positively charged particle
neutron
neutrally charged particle
Ernst Rutherford
discovered that the nucleus is positively charged because protons are in the nucleus. He did the gold foil experiment.
quarks
small particles that make up PROTONS and NEUTRONS, each proton/neutron has 3 each
up, down, top, bottom, strange, charm
types of quarks
3
a proton or neutron is made up of ___ quarks
mass #
equals sum of protons and neutrons in an atom, mass number – atomic number = # of neutrons, we get mass number by rounding the average atomic mass
atomic #
the number of protons in an atom, atom is identified as an element by the number of protons in the nucleus
atomic mass unit
amu, base on the mass of one carbon atom that has 6 protons and 6 neutrons, 1 amu = 1/12 mass of a carbon atom
1/12
amu is ___ of a carbon atom
mass of protons + mass of neutrons
mass of an atom
isotopes
atoms with the same number of protons but different number of neutrons

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