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About today's quiz

Chemistry — Beginner

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  • •Read every question carefully before answering. Some questions include subtle wording that changes the correct answer.
  • •Take your time on the first question. There is no time limit, but your total time is tracked for your statistics.
  • •After each answer, read the explanation. Even correct answers often include useful context you might not know.
  • •Come back tomorrow for a brand new quiz on the same topic. Daily practice is the most effective way to retain what you learn.
BeginnerScience
Today's questions

Today's quiz questions

These are the questions that make up today's quiz. Test your knowledge, see how much you know, and learn from the explanation behind every answer.

  1. 1.What does the pH scale measure?

    • •The temperature of a liquid
    • •The density of a substance
    • •The electrical conductivity of a solution
    • •How acidic or basic a solution is

  2. 2.What happens when you mix an acid with a base?

    • •They create a stronger acid
    • •They produce a gas explosion
    • •Nothing happens
    • •They neutralize each other, producing a salt and water

  3. 3.What happens when you mix baking soda and vinegar?

    • •They produce oxygen gas
    • •They produce carbon dioxide gas and foam up
    • •Nothing happens
    • •They create a strong acid

  4. 4.What is the chemical formula for table salt?

    • •KCl
    • •NaCl
    • •NaOH
    • •CaCl2

  5. 5.What is the symbol for iron on the periodic table?

    • •Ir
    • •Fe
    • •In
    • •I

  6. 6.What are atoms made of?

    • •Quarks only
    • •Molecules and ions
    • •Protons, neutrons, and electrons
    • •Only protons and electrons

  7. 7.What gas do we breathe in that our bodies need to survive?

    • •Oxygen (O2)
    • •Helium (He)
    • •Nitrogen (N2)
    • •Carbon dioxide (CO2)

  8. 8.What is the periodic table?

    • •A list of all known molecules and compounds
    • •A chart showing the boiling points of all substances
    • •A table that shows the times of chemical reactions
    • •A chart of chemical elements organized by atomic number and properties

  9. 9.What is the chemical symbol for gold?

    • •Go
    • •Au
    • •Ag
    • •Gd

  10. 10.What is the chemical formula for carbon dioxide?

    • •C2O
    • •CO
    • •CO2
    • •CH4