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Science Quiz for Grade 7

Quiz by Joy Vasallo

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30 questions
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  • Q1
    Which of the following is an example of a pure substance?
    Air
    Gold
    Sand
    Saltwater
    30s
  • Q2
    Which of the following is an example of a chemical change?
    Cutting paper
    Burning wood
    Melting ice
    Mixing salt and water
    30s
  • Q3
    Which of the following is an example of a physical change?
    Cooking an egg
    Digesting food
    Melting ice
    Burning wood
    30s
  • Q4
    Which of the following is an example of a heterogeneous mixture?
    Milk
    Orange juice
    Trail mix
    Chocolate pudding
    30s
  • Q5
    Which of the following is an example of a physical property of matter?
    Reactivity
    Density
    Toxicity
    Flammability
    30s
  • Q6
    Which of the following is an example of a chemical property of matter?
    Rusting
    Melting
    Boiling
    Freezing
    30s
  • Q7
    Which of the following is a characteristic of a gas?
    The ability to expand and fill any container
    A fixed shape
    A fixed volume
    High density
    30s
  • Q8
    Which of the following is a characteristic of a solid?
    Definite shape and volume
    Ability to flow and fill any container
    Low density
    Easily compressible
    30s
  • Q9
    Which of the following is an example of a physical property of matter?
    Toxicity
    Flammability
    Density
    Corrosiveness
    30s
  • Q10
    What is the formula for calculating density?
    Density = mass × volume
    Density = volume/mass
    Density = mass/volume
    Density = mass - volume
    30s
  • Q11
    What is the basic unit of matter?
    Element
    Atom
    Compound
    Molecule
    30s
  • Q12
    Which of the following is an example of a scientific investigation?
    Playing a game of basketball with friends
    Conducting an experiment to test the effects of different fertilizers on plant growth
    Cooking a new recipe for dinner
    Designing a poster for a school project
    30s
  • Q13
    What is the purpose of a control group in a scientific investigation?
    To determine the conclusion
    To provide a baseline for comparison
    To collect qualitative data
    To manipulate the independent variable
    30s
  • Q14
    What is the dependent variable in a scientific investigation?
    The variable that is controlled
    The variable that remains constant
    The variable that is manipulated
    The variable that is measured or observed
    30s
  • Q15
    Which of the following is an example of a qualitative observation in a scientific investigation?
    Describing the color and texture of a leaf
    Counting the number of bacteria colonies
    Measuring the weight of a rock
    Recording the temperature of water
    30s

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