Periodic System and Chemical Compounds Quiz
Test your knowledge about atoms, ions, and chemical compounds from the periodic table
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Quiz Questions & Answers
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Question 1: What determines which element an atom is in the periodic table?
The number of electrons
The number of neutrons
The number of protons (atomic number)
The total atomic mass
Question 2: How many valence electrons do elements in the halogen group (Group 7) have?
5 valence electrons
7 valence electrons
6 valence electrons
8 valence electrons
Question 3: What type of bond forms between metals and non-metals?
Ionic bond
Covalent bond
Hydrogen bond
Metallic bond
Question 4: What is the charge of a sulfate ion (SO₄)?
1-
2-
3-
1+
Question 5: Which compound is used to neutralize stomach acid during heartburn?
Sodium chloride (NaCl)
Calcium sulfate (CaSO₄)
Sodium bicarbonate (NaHCO₃)
Ammonium chloride (NH₄Cl)
Question 6: What type of chemical bonds form in water (H₂O)?
Ionic bonds
Covalent bonds
Metallic bonds
Van der Waals forces
Question 7: What happens when a metal atom forms a positive ion?
It gains electrons
It loses protons
It loses electrons
It gains neutrons
Question 8: Which compound is essential for building materials and bone setting?
Sodium chloride (NaCl)
Calcium sulfate (CaSO₄)
Potassium nitrate (KNO₃)
Copper sulfate (CuSO₄)