6. How can you apply knowledge on percentage composition?

A. In maintaining the quality of food product.

B. In checking the amount of sugar present in the soft drink.

C. In identifying the correct amount of substance present in a sample.

D. all of the above
7. How many percent of hydrogen (H) is present in water (H2O)?

A. 12%

B. 11%

C. 13%

D. 10%

8. Which of the following units is used in expressing the amount of substance in

terms of the number of particles?

A. Celsius

B. gram

C. liter

D. mole


9. What do you expect to observe in a “Mole Exhibit of Different Substances?

A. different kind of elements

B. different colors of substances

C. showcase of 1mole of different elements having different masses

D. showcase of 1mole of different substances having the same masses

10. It is the sum of the masses of one mole of a substance in a compound.

A. Compound

B. Molar mass

C. Mole

D. Number of particles


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