2. Which substance is made by mixing two elements without being chemically combined?
A. Mixture
B. Solution
C. Element
D. Compound
3. What is true regarding air?
A. Compound of gases
B. Elemen4. To separate salt from water in a seawater mixture, what process is used?
A. Condensation
B. Filtration
C. Evaporation
D. Distillation
5. Which is the best way to use in separating iron parts from mixture?
A. Filter paper
B. Magnet
C. Spoon
D. Water
6. Which of the following materials will be used to separate a mixture of iron nails and sand?
A. Alcohol lamp
B. Filter paper
C. Magnet
D. Spoon
7. Which is NOT a technique to separate compounds of mixture?
A. Condensation
B. Distillation
C. Filtration
D. Evaporation
8. What does it indicate when a sugar is heated in a test tube until it is completely changed into a black
mass and droplets of water.
A. Solution
B. Mixture
C. Element
D. Compounds
9. Which is true regarding water?
A. Compound of elements B. Elements of gases
C. Substances of gases
D. Mixture of gases
10. What are the two classes of matter?
A. Atoms and molecules B. Substance and mixture C. Element and compound D. Plant and Animal cell​