Question

directions: choose the correct category from the list for each item. each category will be used more than once.

1. chalk

a. element

1. copper

b. compound

1. granite

c. suspension

1. vinegar

d. heterogeneous mixture

1. pond water

e. homogeneous mixture

1. water

f. colloid

1. salt
2. permanent press fabric
3. soft drink
4. paint
5. gold
6. a river delta
7. fog
8. gelatin
9. lead

directions: complete the sentences by writing the letters of the correct terms on the lines provided.

1. all substances are built from

shift draw circle | x
e. metal
d. salt

Explanation:

1. Chalk is a compound. It is mainly calcium carbonate.
2. Copper is an element, a pure substance from the periodic - table.
3. Granite is a heterogeneous mixture as it has different minerals visible.
4. Vinegar is a homogeneous mixture, mainly a solution of acetic acid in water.
5. Pond water is a heterogeneous mixture with various substances like dirt, plants, etc.
6. Water is a compound made of hydrogen and oxygen.
7. Salt (sodium chloride) is a compound.
8. Permanent - press fabric is a colloid as it has a dispersed phase in a continuous phase.
9. Soft drink is a homogeneous mixture, a solution of various substances in water.
10. Paint is a colloid.
11. Gold is an element.
12. A river delta is a heterogeneous mixture with different sediments.
13. Fog is a colloid, a dispersion of liquid droplets in air.
14. Gelatin is a colloid.
15. Lead is an element.

Answer:

1. b. compound
2. a. element
3. d. heterogeneous mixture
4. e. homogeneous mixture
5. d. heterogeneous mixture
6. b. compound
7. b. compound
8. f. colloid
9. e. homogeneous mixture
10. f. colloid
11. a. element
12. d. heterogeneous mixture
13. f. colloid
14. f. colloid
15. a. element