Chemistry Allotropy and The Mole Quiz
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Questions and Answers

What is the smallest unit of an element that retains its chemical properties?

  • Molecule
  • Proton
  • Atom (correct)
  • Compound

Which term describes a stable, electrically neutral entity consisting of more than one atom?

  • Molecule (correct)
  • Element
  • Proton
  • Compound

What is the approximate rest mass of an electron in atomic mass units?

  • 1 aem
  • 0.005 aem (correct)
  • 5 aem
  • 0.001 aem

What is the key distinction between allotropy and polymorphism?

<p>Allotropy describes different physical forms of the same chemical element, while polymorphism describes different physical forms of the same chemical compound. (C)</p> Signup and view all the answers

Which type of compound consists of different types of atoms?

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

Which of the following statements about molar mass is correct?

<p>The molar mass of a compound is the sum of the masses of all the atoms in 6.02 x 10^23 molecules of that compound. (C)</p> Signup and view all the answers

What is the relationship between the mole and Avogadro's number?

<p>The mole is a unit that represents 6.02 x 10^23 entities, while Avogadro's number is the number of entities in a mole. (D)</p> Signup and view all the answers

Which entity is defined as a stable, electrically neutral entity with more than one atom?

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

What is the characteristic atomic structure of each element primarily determined by?

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

If you have a mole of glucose, how many moles of each element (carbon, hydrogen, oxygen) are present?

<p>6 moles of carbon, 12 moles of hydrogen, 6 moles of oxygen (C)</p> Signup and view all the answers

How many molecules of aspirin are present in one mole of aspirin?

<p>6.02 x 10^23 molecules (C)</p> Signup and view all the answers

Which of the following is NOT a property of the mole?

<p>The mole is a unit that represents a dozen entities. (B)</p> Signup and view all the answers

How many atoms of Hydrogen are in one mole of Aspirin?

<p>10 atoms (A)</p> Signup and view all the answers

What is the molar mass of Aspirin?

<p>138.14 g/mol (A)</p> Signup and view all the answers

How many atoms of oxygen are in six moles of oxygen?

<p>48 atoms (D)</p> Signup and view all the answers

According to the Law of Conservation of Mass, what happens to the total mass of matter during a chemical change?

<p>The mass remains constant (B)</p> Signup and view all the answers

Which of the following is an example of a Daltonide compound?

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

Which law states that all samples of a pure compound contain the same elements in the same proportion by mass?

<p>Law of Definite Proportions (D)</p> Signup and view all the answers

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