Ionization Energy and Atomic Radius Quiz

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Questions and Answers

Which of the following is NOT a characteristic of atoms?

  • They have mass
  • They can be further divided into smaller particles (correct)
  • They are the smallest unit of an element
  • They occupy space

In the image of the copper penny, what do the brown spheres represent?

  • Protons
  • Oxygen atoms
  • Neutrons
  • Copper atoms (correct)

What is the ratio of copper atoms to oxygen atoms in the compound copper(II) oxide?

  • 1:2
  • 2:1
  • 3:1
  • 1:1 (correct)

Which of the following statements about phase changes is NOT true?

<p>The particles themselves change into different elements (B)</p> Signup and view all the answers

Who are the primary contributors to the development of the modern Periodic Table?

<p>Dmitri Ivanovich Mendeleev and Julius Lothar Meyer (C)</p> Signup and view all the answers

What is the primary purpose of a beaker?

<p>To mix, stir, and heat chemicals (B)</p> Signup and view all the answers

What additional equipment is typically used when heating a liquid in a beaker?

<p>Tripod, Bunsen burner, and wire gauze (B)</p> Signup and view all the answers

What is the primary function of a stirring rod?

<p>To stir solutions and transfer liquid (C)</p> Signup and view all the answers

Which of the following is a characteristic of an Erlenmeyer flask?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary purpose of a Florence flask?

<p>To hold liquids and can be easily swirled and heated (C)</p> Signup and view all the answers

What is the key difference between a test tube and a Florence flask?

<p>Test tubes have one end open and the other end closed, while Florence flasks have a round bottom and a long neck (D)</p> Signup and view all the answers

What is the primary purpose of a test tube brush?

<p>To clean and narrow mouth glassware such as cylinders, burettes, and flasks (D)</p> Signup and view all the answers

What is the proper way to handle a test tube containing a substance?

<p>Never point the open end of the test tube at yourself or others (D)</p> Signup and view all the answers

Which of the following laboratory glassware is used to accurately measure the volume of liquids?

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

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