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ICSE Class 9 Language of Chemistry — practice questions

Explore 21 free Language of Chemistry questions in ICSE Class 9 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Language of Chemistry questions and exercises with answers

Showing questions 1–21 of 21.

Flip cards to link symbols and namesRead the answer and worked solution →A symbol of an element representsRead the answer and worked solution →Who proposed the modern symbol system using letters of element names?Read the answer and worked solution →The symbol of sodium is Na because Na is derived fromRead the answer and worked solution →Which radical has valency +1?Read the answer and worked solution →Valency of an element is the number of hydrogen atoms thatRead the answer and worked solution →The molecular formula of water isRead the answer and worked solution →Aluminium has valency 3 and sulphate radical SO4 has valency 2. The formula of aluminium sulphate isRead the answer and worked solution →Calcium has valency 2 and carbonate has valency 2. The formula of calcium carbonate isRead the answer and worked solution →Which element has variable valency in its compounds?Read the answer and worked solution →In the equation Zn + H2SO4 -> ZnSO4 + H2, the reactants areRead the answer and worked solution →Which of the following is correctly balanced?Read the answer and worked solution →Balance: Fe + H2O -> Fe3O4 + H2. Coefficient of H2O isRead the answer and worked solution →Molecular mass of H2SO4 (H=1, S=32, O=16) isRead the answer and worked solution →Molecular mass of glucose C6H12O6 (C=12, H=1, O=16) isRead the answer and worked solution →Magnesium has valency 2; phosphate radical has valency 3. Formula of magnesium phosphate isRead the answer and worked solution →Number of oxygen atoms in one molecule of potassium permanganate KMnO4 isRead the answer and worked solution →Which state symbol in a chemical equation denotes a substance dissolved in water?Read the answer and worked solution →An equation written with a double arrow indicates a reaction that isRead the answer and worked solution →Which symbol denotes copper, from its Latin name Cuprum?Read the answer and worked solution →If the formula of a compound is M2O3 and oxygen has valency 2, then valency of M isRead the answer and worked solution →

Worked practice questions

Flip cards to link symbols and names

Read exercise and reference answers
Matching pairs
  1. A
    Na
    B
    Sodium
  2. A
    K
    B
    Potassium
  3. A
    Fe
    B
    Iron
  4. A
    Au
    B
    Gold
  5. A
    Ag
    B
    Silver
Instructions
Tap cards to flip them and pair each chemical symbol with the element it stands for.

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A symbol of an element represents

  1. A short form of the name of an element
  2. A short form of a chemical compound only
  3. A short form of a chemical mixture only
  4. A short form of a state of matter only
Show answer and solution

Correct answer: A. A short form of the name of an element

1. The chapter section on symbols defines the term. 2. A symbol is a short form for the name of an element. 3. It also represents one atom of that element. 4. So option A is correct. _Source: Selina Concise Chemistry Class 9, Ch 4 The Language of Chemistry (Mistral OCR'd PDF), section A on symbols_

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Who proposed the modern symbol system using letters of element names?

  1. Dalton in 1808
  2. Berzelius in 1814
  3. Avogadro in 1811
  4. Mendeleev in 1869
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Correct answer: B. Berzelius in 1814

1. The chapter contrasts Dalton's figurative symbols with the modern system. 2. Dalton's pictures were cumbersome and dropped. 3. Berzelius in 1814 proposed letter-based symbols. 4. So option A is correct. _Source: Selina Concise Chemistry Class 9, Ch 4 The Language of Chemistry (Mistral OCR'd PDF), section on history of symbols_

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More Chemistry topics

The Periodic TablePeriodic TableThe Language of ChemistryAtomic Structure