1. A solution is composed of two or more substances. Which is an example of a solution?

A. Blood
B. Cooked Flour
C. Sea Water
D. Marshmallow

2. All of the following describes a solution EXCEPT?

A. Cannot pass through filter paper
B. Clear
C. Homogenous
D. Can be separated by physical means

3. Why a solution is considered homogenous mixture?

A. It contains a solute and solvent
B. It's components are distributed evenly
C. It is usually liquid
D. It can be diluted or concentrated

4. Which of the following BEST describe hypothesis?

A. Precautions
B. Educated Guess
C. Result
D. Consequence

5. Sugar heated in a test tube until it is completely changed into black mass droplets of water. This experiment indicated that sugar is?

A. A Solution
B. A Compound
C. An Element
D. A Heterogeneous mixture

6. What is maximum amount of solute that can be dissolved in a fixed amount of solvent at a given temperature?

A. Percent by mass
B. Dilution
C. Solubility
D. Dissolution

7. What is percentage concentration in the following solution: 2 grams sucrose in 80 grams water?

A. 2.4 %
B. 4.4 %
C. 97.6 %
D. 2.5 %

8. Which of the following statements distinguishes pure substances from mixture?

A. Can be seperated by physical means
B. Have no specific solubility and densities
C. Consist of two or more kinds of matter
D. Have a constant boiling temperature and melting temperature

9. What should be done next in scientific method after gathering and analyzing data?

A. Observing
B. Experimenting
C. Making Hypothesis
D. Developing Conduction

10. Sodium chloride dissolves in water very well. Which is NOT TRUE in the following statements?

A. Water is pure substance
B. Dissolving sodium chloride with water produces a mixture.
C. Sodium chloride is pure substance
D. Dissolving sodium chloride with water produces a new substance.​