II. TRUE OR FALSE
Directions: Write TRUE if the statement is correct, if the statement is FALSE write the word(s) which
make the sentence will correct. Write your answer on the space provided.
Two
___1. Soap is a cleaning material which is a fatty acid salt made by reacting animal fat
with sodium hydroxide.
___2. Soap has a hydrophobic tail (soluble in oil or grease) and a hydrophilic polar head
(soluble in water)
___3. Detergent formulation includes builders to increase detergency, optical brighteners,
bleaches, fragrances, and fabric softeners.
Falo (6)
___4. Natural gas is mainly methane and burns relatively clean.
____5. Heat energy from the interior of Earth is a form of geothermal energy.
26. One of the problems faced by man with the use of fossil fuel as a source of energy is
its depletion as a vital resource or its being non-renewable energy source.
___7. Two competing models used to explain the motions of heavenly objects are the
heliocentric and geocentric models of the solar system.
___8. The telescope has provided up-close view of the planets and their satellites.
Falce &
___9. Aristotle divides motion into two main classes: natural motion and violent motion.
___10. Geothermal energy is energy from elevated water like waterfalls and water stored in
dams made to fall on turbines of electric generator.
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