Simple Molecular Structures Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

PERSONALISED 1-TO-1 TUTORING

Need more help on this topic? Get 1-to-1 support

Get support with clear explanations, practice and feedback (Ages 5 to 16).

  • DBS-checked tutors
  • Flexible times
  • Parents can be updated

Want an ad-free experience? Subscribe to remove ads

What is a molecule?

A molecule is a group of two or more atoms joined together by covalent bonds that move around as a single particle.

What is meant by a simple molecular substance?

A simple molecular substance is made of many small, separate molecules, each with only a few atoms joined by covalent bonds.

What type of bond holds the atoms together inside a simple molecule?

Strong covalent bonds hold the atoms together inside a simple molecule as the atoms share pairs of electrons.

What are intermolecular forces in a simple molecular substance?

Intermolecular forces are weak forces of attraction between one molecule and the next molecule.

Why do simple molecular substances have low melting and boiling points?

They have low melting and boiling points because only weak intermolecular forces need to be overcome, so little energy is needed.

What physical state are many simple molecular substances at room temperature, and why?

Many simple molecular substances are gases or liquids at room temperature because their low melting and boiling points mean they are not solid.

Do simple molecular substances conduct electricity? Explain your answer.

No. Simple molecular substances do not conduct electricity because they have no free electrons or ions to carry charge.

When a simple molecular substance boils, what happens to its particles?

The molecules move further apart as the weak forces between them are overcome, but the strong covalent bonds inside each molecule stay intact.

Give two examples of simple molecular substances.

Examples of simple molecular substances include oxygen (O2), chlorine (Cl2), water (H2O) and carbon dioxide (CO2).

What is a diatomic molecule and give one example from simple molecular substances.

A diatomic molecule has two atoms joined together. Oxygen (O2) and chlorine (Cl2) are examples of diatomic simple molecules.