Language of Chemistry Quiz - ICSE Class 8 Science

Free practice quiz: Language of Chemistry (ICSE Class 8 Science). 51 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is NOT a chemical symbol?

   1. H
   2. He
   3. Hy
   4. Hg
   Show answer

   Answer: C. Hy

   Chemical symbols are abbreviations for elements. 'H' represents Hydrogen, 'He' represents Helium, and 'Hg' represents Mercury. 'Hy' is not a recognized chemical symbol for any element.

2. The chemical formula for sulfuric acid is H₂SO₄. How many atoms are present in one molecule of sulfuric acid?

   1. 4
   2. 5
   3. 6
   4. 7
   Show answer

   Answer: D. 7

   The molecule contains 2 Hydrogen atoms, 1 Sulfur atom, and 4 Oxygen atoms. Total atoms = 2 + 1 + 4 = 7.

3. Which element has the chemical symbol 'Na'?

   1. Nickel
   2. Sodium
   3. Nitrogen
   4. Neon
   Show answer

   Answer: B. Sodium

   'Na' is the chemical symbol for Sodium.

4. If an atom has 9 protons and 10 neutrons, what is its atomic number?

   1. 9
   2. 10
   3. 19
   4. 90
   Show answer

   Answer: A. 9

   The atomic number is defined by the number of protons. An atom with 9 protons has an atomic number of 9.

5. What is the chemical formula for potassium chloride?

   1. KCl
   2. K₂Cl
   3. PCl
   4. KClO
   Show answer

   Answer: A. KCl

   Potassium (K) has a +1 charge and Chlorine (Cl) has a -1 charge. They combine in a 1:1 ratio to form KCl.

More quizzes

• Physical and Chemical Changes
• Water
• Atomic Structure
• Carbon and its Compounds
• Chemical Reactions
• Elements, Compounds and Mixtures

Browse all Chemistry quizzes