Practice Composition Of The Nucleus (3.1) - Atoms and Nuclei

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6 sample questions

Question 1.
What particles make up the nucleus of an atom?
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Remember the term nucleons.
Question 2.
What is the atomic number?
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Think about what defines an element.
3Question 3.
What is the mass number of an atom with 5 protons and 6 neutrons?
- 5
- 6
- 11
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Think of how the mass number is defined.
4Question 4.
The atomic number is defined as the number of which particle?
- Protons
- Neutrons
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It identifies the element.
Question 5.
An atom has 15 protons (atomic number Z) and 16 neutrons. What is its mass number, and which element is it?
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Sum up the protons and neutrons for mass number.
Question 6.
If an element's atomic number is 12, and it has 12 neutrons, determine its mass number and identify the element.
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Remember what the atomic number represents.

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