What I Know
Direction: Write the letter of the correct answer. Do it on separate sheet of paper
1. What method is used to obtain salt from sea water?
a. decantation
c. evaporation
b. sedimentation d, filtering
2. Which of the following examples undergo evaporation process?
a. a pail of water under the heat of the sun
b. brushing your teeth after meal
C. ironing clothes every weekend
d. fistening to the radio
3. It is the main factor that causes evaporation process in separating mixtures.
a. water
C. Smoke
d. light
b. heat
4. Princess accidentally spills a glass of water in the salt container and she is thinking with of a
solution on how she'sgoing to recover salt from water. What will Princess do to return the
salt to its original phase?
a. She will wrap it with newspaper tightly
b. She will throw it away in the waste can
C. She will hide it in a dark corner
d. She will boil the solution
5. While boiling water in a kettle, Gwayne noticed that there are smoke coming from the spout
of a kettle. He asked his mother,
"Why did the smoke rise upward"? What do you think will be the mother's answer?
a. because the water reached its cooling point
b. because the water reached its boiling point
C. because the water is heated and became water vapor
d. because the water is freezing