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Chemistry — Beginner

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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 'flammable' mean in chemistry?

    • •A substance that dissolves in water
    • •A substance that changes color when heated
    • •A substance that can easily catch fire and burn
    • •A substance that is toxic to humans

  2. 2.What is an alloy?

    • •A metal that has been refined to remove impurities
    • •A pure metal found in nature
    • •A mixture of two or more metals (or a metal with a non-metal)
    • •A compound formed by the reaction of two metals

  3. 3.What state of matter does ice represent?

    • •Plasma
    • •Gas
    • •Solid
    • •Liquid

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

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

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

    • •NaCl
    • •KCl
    • •NaOH
    • •HCl

  6. 6.What is the smallest unit of a chemical element?

    • •Atom
    • •Electron
    • •Molecule
    • •Cell

  7. 7.What is an ion?

    • •An atom with no neutrons
    • •A subatomic particle found in the nucleus
    • •A molecule made of only one type of atom
    • •An atom that has gained or lost electrons and has a charge

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

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

  9. 9.What does H2O2 represent?

    • •Water
    • •Hydrochloric acid
    • •Hydrogen peroxide
    • •Heavy water

  10. 10.What is a chemical reaction?

    • •Heating a substance until it melts
    • •A process where substances change into new substances
    • •Mixing two substances together without any change
    • •The movement of atoms from one place to another