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Science 7 Module 2 Compounds

Quiz by Melva D. Borja

Grade 7
Science
Philippines Curriculum: Grades K-10 (MELC)

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10 questions
Show answers
  • Q1
    Oxygen and iron combine chemically to form rust. Rust is classified as which of the following?
    a compound
    an element
    a mixture
    an atom
    30s
    S7MT-Ig-h-5
  • Q2
    Compounds are different than elements because compounds are __________.
    made from the same type of atoms
    pure substance, elements are not
    A combination of two or more elements.
    not able to be broken down into parts
    30s
    S7MT-Ig-h-5
  • Q3
    30s
    S7MT-Ig-h-5
  • Q4
    Water (H2O), is not found on the periodic table because water is a__________.
    compound
    liquid
    mixture
    atom
    30s
    S7MT-Ig-h-5
  • Q5
    What two elements make up common table salt?
    Chlorine and sodium
    Sodium and oxygen
    Sodium and hydrogen
    Chlorine and hydrogen
    30s
    S7MT-Ig-h-5
  • Q6
    Which of the following substances can be separated into simpler substances only by chemical means?
    gold
    water
    salt water
    sodium
    30s
    S7MT-Ig-h-5
  • Q7
    What is the name of the compound with the formula NaCl?
    monosodium monochloride
    sodium chloride
    chlorine sodiate
    sodium chlorate
    30s
    S7MT-Ig-h-5
  • Q8
    30s
    S7MT-Ig-h-5
  • Q9
    Which of the following are considered pure substances?
    both elements and compounds
    elements
    compounds
    neither elements nor compounds
    30s
  • Q10
    What is electrolysis?
    The passing of electricity through an electrolyte with the moving of positive and negative ions to the uncharged electrodes.
    The passing of electricity through an anode with the moving of positive and negative ions to the charged electrodes.
    The passing of electricity through an electrolyte with the moving of positive and negative ions to the charged electrodes.
    The passing of electricity through an electrolyte with the moving of uncharged ions to the charged electrodes.
    30s
    S7MT-Ig-h-5

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