Gr 9 NATURAL SCIENCES: CH 2.1 Names of compounds
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Questions and Answers

What is the prefix for four in chemical nomenclature?

  • tetra- (correct)
  • poly-
  • penta-
  • hexa-

What is the correct name for the compound CO?

  • Carbon trioxide
  • Carbon tetroxide
  • Carbon dioxide
  • Carbon monoxide (correct)

What is the correct formula for Dinitrogen tetroxide?

  • N₂O₃
  • NO₂
  • N₂O₄ (correct)
  • NO₄

What is the correct name for the compound SO₂?

<p>Sulfur dioxide (D)</p> Signup and view all the answers

What is the correct formula for Iron sulfide?

<p>FeS (C)</p> Signup and view all the answers

What is the primary purpose of assigning unique names to compounds in chemistry?

<p>To distinguish between compounds with the same elements but in different ratios (B)</p> Signup and view all the answers

Which type of compound is named with the metal first, followed by the non-metal with the suffix '-ide'?

<p>Compounds containing a metal and a non-metal (C)</p> Signup and view all the answers

What is the suffix used to modify the second element's name when naming compounds containing only non-metals?

<p>-ide (C)</p> Signup and view all the answers

According to the element position rule, which element is named first in a compound containing only non-metals?

<p>The element further to the left on the Periodic Table (A)</p> Signup and view all the answers

What is the purpose of using prefixes in naming compounds containing only non-metals?

<p>To indicate the number of atoms in the compound (D)</p> Signup and view all the answers

What is the significance of unique names in chemistry?

<p>To distinguish between compounds with the same elements but in different ratios (B)</p> Signup and view all the answers

What is the basis for naming compounds containing a metal and a non-metal in the IUPAC system?

<p>The position of the elements in the Periodic Table (C)</p> Signup and view all the answers

What is the purpose of the suffix '-ide' in the IUPAC naming system?

<p>To modify the name of a non-metal in a compound (A)</p> Signup and view all the answers

Which of the following compounds would be named using the element position rule?

<p>NO₂ (D)</p> Signup and view all the answers

What is the significance of prefixes in the IUPAC naming system for compounds containing only non-metals?

<p>To specify the number of atoms of an element in a compound (A)</p> Signup and view all the answers

What is the correct name for the compound N₂O₄?

<p>Dinitrogen tetroxide (B)</p> Signup and view all the answers

What is the correct formula for the compound Sulfur trioxide?

<p>SO₃ (A)</p> Signup and view all the answers

Which of the following compounds has a common name that is different from its systematic IUPAC name?

<p>H₂O (D)</p> Signup and view all the answers

What is the correct name for the compound LiF?

<p>Lithium fluoride (A)</p> Signup and view all the answers

What is the correct formula for the compound Carbon monoxide?

<p>CO (A)</p> Signup and view all the answers

What is the primary purpose of the 'Element Position Rule' in naming compounds containing only non-metals?

<p>To establish a standardized order for naming elements (C)</p> Signup and view all the answers

Which of the following compounds would NOT be named using the IUPAC system?

<p>C₆H₁₂O₆ (Sugar) (B)</p> Signup and view all the answers

Which of the following statements about the IUPAC naming system is FALSE?

<p>The IUPAC system is used for naming organic compounds (B)</p> Signup and view all the answers

What is the significance of assigning unique names to compounds in chemistry?

<p>To enable precise communication among chemists (A)</p> Signup and view all the answers

Which of the following compounds would not have a prefix in its IUPAC name?

<p>Water (D)</p> Signup and view all the answers

What is the correct IUPAC name for the compound with the formula MgO?

<p>Magnesium oxide (D)</p> Signup and view all the answers

Which of the following compounds would have a suffix '-ide' in its IUPAC name?

<p>Sodium chloride (D)</p> Signup and view all the answers

What is the correct IUPAC name for the compound with the formula FeS?

<p>Iron sulfide (D)</p> Signup and view all the answers

Which of the following compounds would be named using the prefix for three?

<p>Sulfur trioxide (A)</p> Signup and view all the answers

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