Chemistry Quiz for Class 7

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Chemistry Quiz for Class 7 Instructions:

  • There will be 30 multiple choice questions in this Quiz.
  • Answers to the questions will change randomly each time you start this Quiz.
  • Practice this Quiz at least three times to secure High Marks.
  • You can see your scores and ratings at the end of the Quiz.
  • If you found any incorrect answers in the Quiz, click on the quiz title and comment on that MCQ so our team can update the incorrect answer on time.

  • Question of

    What is a compound?

    • A combination of 2 or more elements
    • A combination only of 3 elements
    • The simplest form of a substance
  • Question of

    What is a mixture?

    • A combination of substances in which the atoms of the substance do not chemically combine
    • A combination of substances where new substances are formed through a reaction
    • A combination of elements to make a new substance
  • Question of

    What would you be able to do with a filter, magnet, or strainer when thinking about a mixture?

    • Separate them
    • Combine them chemically
    • Combine them physically
  • Question of

    What is a substance that is dissolved in another substance?

    • Solute
    • Solvent
    • Solution
  • Question of

    A usually liquid substance capable of dissolving or dispersing one or more other substances?

    • Solvent
    • Solute
    • Solution
  • Question of

    A homogeneous mixture of one or more solutes dissolved in a solvent?

    • Solution
    • Solvent
    • Solute
  • Question of

    What is the simplest form that cannot be broken down to anything simpler?

    • Element
    • Compound
    • Solution
  • Question of

    How are solutions and mixtures alike?

    • They are a combination of substances
    • They are both chemically combined
    • They can be separated immediately
  • Question of

    How are mixtures and solutions different form each other?

    • The mixture combines physically and the solution is not easily separated
    • They have more than one elements in them
    • Once combines chemically the other combines electronically
  • Question of

    To separate a mixture of soil and water what separation method is used?

    • Filtration
    • Evaporation
    • Distillation
  • Question of

    To separate a mixture of salt and water what separation method is used?

    • Evaporation
    • Distillation
    • Filtration
  • Question of

    Which of the following is not a separation technique?

    • Stirring
    • Hand Sorting
    • Chromatography
  • Question of

    Chemical name of Rust is?

    • Ferric oxide
    • Ferrous oxide
    • Magnetite
  • Question of

    Chemical name of baking soda is?

    • Sodium hydrogen carbonate
    • Magnesium hydroxide
    • Calcium carbonate
  • Question of

    Complete the reaction. Iron + _____ + Water —–>?

    • Oxygen, Iron oxide
    • Nitrogen, Carbon dioxide
    • Oxygen, Iodide
  • Question of

    Stainless steel is a mixture of iron with?

    • Carbon and other metals
    • Magnesium with nickel
    • Chromium with manganese
  • Question of

    Common examples of bases include?

    • Detergent, antacids and shampoo
    • Soap, ammonia and sodas
    • Lemons, vinegar and bleach
  • Question of

    If a substance turns blue litmus paper red, and does not change red litmus paper, it is:

    • An acid
    • A base
    • Neutral
  • Question of

    O2 + 2H2 –> 2H2O In this equation, the O2 is a ______.

    • reactant
    • product
    • mixture
  • Question of

    Which statement is true about acids?

    • Acids have a pH below 7.
    • All acids can harm you.
    • Acids are slippery and taste bitter.
  • Question of

    What is the most common element in the human body?

    • Oxygen
    • Carbon
    • Carbon dioxide
  • Question of

    The center or core of an atom is called ______.

    • a nucleus
    • a neutron
    • an atoms
  • Question of

    These have the same number of protons in each atom but the neutron numbers can vary.

    • Isotopes
    • Elements
    • Atomic numbers
  • Question of

    This is a particle that carries a negative electrical charge.

    • Electron
    • Proton
    • Neutron
  • Question of

    This is a particle that carries a positive electrical charge.

    • Proton
    • Neutron
    • Electron
  • Question of

    This contains a dense central nucleus that is surrounded by a cloud of negatively charged electrons.

    • Atom
    • Neutron
    • Proton
  • Question of

    The study of the composition, structure, properties and change of matter is known as ______.

    • chemistry
    • physics
    • atoms
  • Question of

    A substance that consists of a single type of atom is ______.

    • a chemical element
    • an element
    • an isotope
  • Question of

    The number of protons in the nucleus of an atom is known as the ______.

    • atomic number
    • subatomic hadron particle
    • nucleon
  • Question of

    Any substance that cannot be broken into two or more simpler substances is known as ______.

    • an element
    • a chemical element
    • an isotope

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