Element identification is a basic skill needed in the study of chemistry. This is a collection of ten chemistry test questions with answers dealing with the identification of elements and determining the number of protons and neutrons of an element. The answers are at the end of the test.

A periodic table would be helpful for this test.

Question 1

What is the element X represented by the symbol ⁹¹₄₀X.

Question 2

What is the element X represented by the symbol ³³₁₆X?

Question 3

What is the element X represented by the symbol ⁵¹₂₃X?

Question 4

How many protons and neutrons are in ³⁵Cl?

Question 5

How many protons and neutrons are in ⁷⁰Ga?

Question 6

How many protons and neutrons are in ⁶⁰Co?

Question 7

How many protons, neutrons and electrons are in ⁵⁶Fe³⁺?

Question 8

How many protons, neutrons and electrons are in ⁴⁰Ca²⁺?

Question 9

How many protons, neutrons and electrons are in ¹⁶O^2-?

Question 10

How many protons, neutrons and electrons are in ¹²²Sb²⁺?

Answers

1. Zirconium
2. Sulfur
3. Vanadium
4. 17 protons, 18 neutrons
5. 31 protons, 39 neutrons
6. 27 protons, 33 neutrons
7. 26 protons, 30 neutrons, 23 electrons
8. 20 protons, 20 neutrons, 18 electrons
9. 8 protons, 8 neutrons, 10 electrons
10. 51 protons, 71 neutrons, 49 electrons

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