Republic of the Philippines
Department of Education
Capiz National High School
SUMMATIVE TEST in Science 7 SCORE
Unit 1 (Module 1)
Name:_____________________________________ Gr. & Sec.:_________________ Test II. True or False. Write T if the statement is correct and F if
wrong. Write your answer on the space provided before the
Test I. Multiple Choice. Encircle the letter of the correct answer. number.
1. You observe that the iron grills in your windows _______________1. Controlled variable is the same all throughout
become rustier after the rain. You wonder why they the experiment.
become rusty. Which step in the scientific method is _______________2. The other term for homogeneous mixture is
involved? solution.
a. Formulating hypothesis _______________3. A concentrated solution has more solvent than a
b. identifying the problem/asking a question dilute solution
c. making conclusion _______________4. Concentration is a measure of the volume of a
d. gathering data solution
_______________5. Solubility is dependent on temperature
2. What should you do to be sure that the experimental _______________6. Independent variable does not affect the
results are valid? dependent variable.
a. Report your experimental result _______________7. A solution is saturated when it has the maximum
b. manipulate two variables amount of solute it can hold at a given
c. Conduct more than one trial/test temperature.
d. try more than one hypothesis _______________8. The solubility of a gas in a liquid increases as the
temperature increases.
3. In an experiment about bacteria, using different _______________9. The solubility of a solid in a liquid increases as the
amounts of antibiotic is an example of which kind of temperature decreases.
variable? _______________10. Heterogeneous mixture has one phase.
a. Independent
b. Controlled Test III. Identification.
c. Constant A. Rearrange the jumbled letters and write the correct answer on
d. Dependent the space provided before the number.
4. How is hypothesis tested? _________________1. (tulsoe) The substance that is dissolved in the
a. By experimenting solution.
b. By inferring _________________2. (drattueas) A solution which contains the
c. By graphing maximum amount of solute dissolved by a
d. By making conclusions given amount of solvent.
_________________3. (deilut) A solution in which there is little
5. What is the first step in scientific method? amount of solute in the solvent.
a. Recording data _________________4. (rmaett) Anything that occupy space and has
b. Formulating hypothesis mass.
c. Asking a question _________________5. (gomesenohou) A mixture that has only one
d. Making a conclusion phase.
6. Which of the following should you do if you want to B. Identify the following solutions as gaseous, liquid or solid
dissolve more table sugar in water? solutions. Write GS for gaseous, LS for liquid and SS for solid on
a. Increase the pressure the space provided before the number.
b. Increase the temperature of water
c. Increase the amount of sugar ________1. Air ______6. Rubbing alcohol
d. Increase the size of the container ________2. Alloy ______7. Jewelry
________3. Ocean water ______8. Vinegar
7. Oil cannot be mixed with water, therefore, oil is ________4. Naphthalene in air ______9. Soy sauce
________________ to water. ________5. Soft drink ______10. Saltwater
a. soluble
b. miscible C. Identify the following mixtures as Homogeneous or
c. immiscible Heterogeneous. Write HO for homogeneous and HE for
d. insoluble heterogeneous.
8. What can be done to dissolve instant coffee faster? _______1. Smoke ______6. alcohol
a. Cool the solution _______2. Fruit salad ______7. Air
b. Add more solute _______3. Seawater ______8. Gravel and sand
c. Saturate the solution _______4. Chopsuey ______9. Soft drink
d. Increase the temperature of the solution _______5. Mineral water ______10. Pinakbet
9. When a small amount of iodine is dissolved in alcohol, Test IV. Enumeration.
what part of the solution is alcohol? Enumerate the four (4) factors affecting solubility
a. Solution 1.
b. Solute 2.
c. Solvent 3.
d. Precipitate 4.
10. Which of the following can affect the solubility of a
solute in a solvent?
a. Temperature of the solvent
b. Surface area of the solute
c. Stirring the solution Corrected by: _______________________________________
d. All of these
