Practice Mass Number (a) (3.2) - Atomic Structure - IB 10 Sciences (Group 4)

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6 sample questions

Question 1.
What is the mass number of an atom with 10 protons and 12 neutrons?
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Add the number of protons to neutrons.
Question 2.
How many protons does Oxygen have if its atomic number is 8?
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The atomic number equals the number of protons.
3Question 3.
What is the mass number of an atom?
- Only Protons
- Protons and Electrons
- Protons and Neutrons
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Consider the components that make up an atom's mass.
4Question 4.
True or False: Isotopes of an element have different atomic numbers.
- True
- False
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Remember, atomic number is based on protons.
Question 5.
If an isotope of chlorine has 17 protons and 20 neutrons, what is its mass number? Discuss the implications of this isotope compared to another with 17 protons and 18 neutrons.
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Remember to add protons and neutrons for mass number.
Question 6.
An unknown element has a mass number of 40 and 18 protons. Determine its identity and discuss its isotopes.
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Use the periodic table to find the element associated with the atomic number.

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