1.The following must always be observed while doing laboratory activity EXCEPT?

a. always point a bottle/test tube away from you when heating
b. avoid using double-edge razors c. inform the teacher immediately if accident happen
d. taste chemicals to find out if it is acidic or basic

2.What is a statement shows The possible solution to the problem.

a.theory
b.conclusion
c.hypothesis
d.prediction

3.''Effect of calamansi extract in removing clothes stains". The dependent variable is ______.

a.removal of clothes stains
b.amount calamansi extract
c.types of clothes stain
d.water used to remove the stain

4.Which of the following state a problem?

a.I therefore conclude that water is the universal solvent
b.The table shiws that plants grow faster with fertilizers
c.lemon juice is healthier than ice tea
d.What is the best shampoo to remove dandruff?

5.When electricuty is allowed to flow in a material, that material is said to be

a.malleable
b.conductor
c.insulation
d.luster

6.Which is the following is not a variable in the problem: What is the fastest route from my House to school?

a.lenth if the road
b.the kind of vehicle used
c.the time of arrival in the school
d.the music used in walking​