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1st Quarter Exam in Science Grade 7

Quiz by Karen Vanessa Alfaro

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50 questions
Show answers
  • Q1

    1What do you call an idea or explanation that you test trough study and experimentation?

    a.Hypothesis

    b.Conclusion

    c.Question

    30s
  • Q2

    2. Anything that occupies space, has mass weight and volume is known as?

    b. zoology

    c. matter

    a. Science

    30s
  • Q3

    3.Why solution is considered a homogenous mixture?

    b. it contains solute and solvent

    c. it can be dilute or concentrated

    a. its components are distributed evenly

    30s
  • Q4

    4. All of the following describes a solution EXCEPT____

    c. clear

    b. can be separated by physical means

    a. cannot pass through filter paper

    30s
  • Q5

    5. Which is an example of solution?

    c. sea water

    b. cooked flour

    a. blood

    30s
  • Q6

    6. the two components of solution are solute and solvent. which statement describe the solute?

    c.  it is the component of a solution in bigger quantity

    b. it is the component of a solution in smaller quantity

    a. it is the liquid component of he solution

    30s
  • Q7

    7. In a chemistry class, Karen prepared a solution by mixing 25g of sugar in 80g of water. what are the concentration of the solute and solvent in percentage by mass?

    a.     Solute:44%, Solvent: 56%

    c. Solute: 30%, Solvent: 70%

    b. Solute: 24%, Solvent: 76%

    30s
  • Q8

    8.  Which of the following statements is TRUE about elements and compounds?

    c. They can be broken down into simpler substances.

    a.     They are homogenous in nature.

    b.     They are the simplest form of matter.

    30s
  • Q9

    9.Non-metalsare brittle and are normally used as an insulator while metals are hard, dense solid material. Which of the following elements are metals and non-metals?

     b. Sn and As

     c. Ca and Fe

    a.K and N                       

    30s
  • Q10

    1. Thefollowing substances are examples of compounds EXCEPT?

    c. Helium gas

     b. water  

    a.     Carbondioxide

    30s
  • Q11

    1. Metals are good conductors of heat and electricity. Which elements do NOT exhibit this property?

     c. Chromium

    a.     Aluminum

       b. Sulfur  

    30s
  • Q12

    12. What is the maximum amount of solute that can be dissolved in a fixed amount of solvent at a given temperature?

    a.     Solubility

    c. Dissolution

      b. dilution

    30s
  • Q13

    1. All of the following affects the solubility of a solid in a liquid EXCEPT_______?

       b. surface area       

       c. Temperature

    a. Stirring  

    30s
  • Q14

    1. Whichof the following statements distinguishes pure substances from mixtures?

    b. Consists of two or more kinds of matter

    a.  Can be separated by physical means.

    c. Have constant boiling temperature and melting temperature

    30s
  • Q15

    1. Mixturescan be separated by physical methods while pure substances cannot be separated. Which of the following groups contain only pure substances?

    a.     Gold,copper, oxygen       b. Ammonia, vinegar,silicon       c.. Carbon dioxide, air, water

    a.     Gold,copper, oxygen

    c.. Carbon dioxide, air, water

    b. Ammonia, vinegar,silicon

    30s

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