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Copy of CI Skill Check #2.1 (Unit 1 Investigation 2 Experience 1) (7/30/2025)
By Didi Maloney
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Last updated 9 months ago
5 questions
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Question 1
1.
Question 2
2.
Question 3
3.
Question 4
4.
Question 5
5.
The image shows a model for a lithium atom:
How many protons are in this lithium atom?
4
10
7
3
How many electrons does one neutrally charged atom of neon have?
20
10
20.18
11
How many neutrons are there in
225
Ra?
314
225
137
88
The table shows the number of each of the three subatomic particles for four atoms.
Which atoms represent the same element?
1 and 2
2 and 4
2 and 3
1 and 3
Based on the image of abundance of Neon isotopes. What would be a good estimate of the average atomic mass of neon?
19.1 amu
21.0 amu
22.0 amu
20.2 amu