Chemistry Fundamentals Quiz

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Questions and Answers

Which term describes the elements found in the same vertical column of the periodic table?

  • Shells
  • Periods
  • Groups (correct)
  • Isotopes

What is indicated by the atomic number of an element?

  • The number of neutrons in the nucleus.
  • The total number of protons and neutrons.
  • The number of electrons in the outermost shell.
  • The number of protons in the nucleus. (correct)

Which of the following describes a 'covalent bond'?

  • A bond formed between a positive ion and a delocalized electron sea.
  • The force between a proton and a neutron.
  • A bond formed by sharing electrons between atoms. (correct)
  • The attraction between oppositely charged ions.

What is true regarding an atom that has achieved an 'edelgasconfiguratie'?

<p>It has a full outermost electron shell, making it very stable. (D)</p> Signup and view all the answers

What term is used to describe atoms of the same element having different mass numbers?

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

What does the term 'valentie-elektronen' refer to?

<p>The electrons in the outermost energy level of an atom. (B)</p> Signup and view all the answers

Which term represents the total number of protons and neutrons in an atom's nucleus?

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

How is the 'relatieve molecuulmassa' of a molecule determined?

<p>By summing the atomic masses of all atoms in the molecule. (D)</p> Signup and view all the answers

Flashcards

Groups

Columns in the periodic table with similar chemical properties.

Periods

Rows in the periodic table where elements have valence electrons in the same shell.

Alkalimetalen

Elements in group 1 of the periodic table, known for being reactive.

Halogens

Elements in group 17 of the periodic table, known for being highly reactive nonmetals.

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Edelgassen

Elements in group 18 of the periodic table, characterized by low reactivity.

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Atoomnummer

The number of protons in an atom's nucleus, defining the element.

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Electron

A negatively charged particle that orbits the nucleus of an atom.

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Covalentie

The number of bonds an atom can form by sharing electrons.

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