Atomic Structure
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Atomic Structure Answer Key
1.
Which statement correctly identifies the subatomic particles located in the nucleus of a sulfur atom?
- Neutrons and Protons
- Electrons and Protons
- Protons, only
- Electrons, only
2.
Which subatomic particles are located outside of the nucleus of an atom?
- Positively-charged protons.
- Negatively-charged positrons.
- Negatively-charged electrons.
- Neutrons.
3.
Which particles have approximately a mass of 1 amu?
- protons, only
- neutrons, only
- electrons, only
- protons and neutrons
4.
Which particles have a mass of 0 amu?
- Protons
- Neutrons
- Electrons
- Alpha Particles
5.
Which subatomic particle is correctly matched with its charge?
- proton - charge of 0
- neutron - charge of -1
- electron - charge of +1
- electron - charge of -1
6.
Which statement correctly describes the relationship between the charge of a proton and the charge of an electron?
- Protons and electrons have the same charge.
- Protons have a lower charge than electrons do.
- Protons and electrons have opposite charges.
- Protons have a charge of 0, electrons have a charge of -1.
7.
Which statement correctly describes the charge of the nucleus of an atom?
- It is neutral.
- It is positively-charged.
- It is negative and neutral.
- It is negatively-charged.
8.
In the modern-day model of an atom, what is the importance of the orbital?
- It is the region in which a positron can most likely be located.
- It is the most likely charge of an electron.
- It is the region in which neutrons can most likely be found.
- It is the region in which electrons can most likely be found.
9.
In your own words, explain why an atom is electrically neutral overall.
- Possible Answers include, but are not limited to, the following:
• There are an equal number of protons and electrons
• The charges of the protons and electrons balance each other out
• The number of protons and electrons are the same
10.
Find the total number of electrons in an atom with 6 protons and 7 neutrons.
- Possible answers:
• 6 electrons
• 6
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