Question

TRUE / FALSE 1.Water is homogenous substance. 2.Element is always metal. 3.Substance is always homogeneous 4.In compound elements combine in definite proportion. 5.Iodine can be purified by sublimation. 6.Mixtures are always combinations of the same compounds that are at different states. 7.We can separate all mixtures by filtration. 8.All mixtures are defined as "" heterogeneous"" 9.Only specific compounds can be combined to form mixtures. 10.No pure elements are liquids at room temperature. 11.Mixtures are combinations of one or more compounds that can be separated with chemical processes. 12.Crystals can be made of mixtures.

Answer 1

TRUE / FALSE

1.Water is homogenous substance. (True)

2.Element is always metal. (False)

3.Substance is always homogeneous (False)

4.In compound elements combine in definite proportion. (True)

5.Iodine can be purified by sublimation. (True)

6.Mixtures are always combinations of the same compounds that are at different states. (False)

7.We can separate all mixtures by filtration. (False)

8.All mixtures are defined as "" heterogeneous"" (False)

9.Only specific compounds can be combined to form mixtures. (False)

10.No pure elements are liquids at room temperature. (False)

11.Mixtures are combinations of one or more compounds that can be separated with chemical processes. (False)

12.Crystals can be made of mixtures.(True)

Answer 2

1.True

2.False

3.False

4.True

5.True

6.False

7.False

8.False

9.False

10.False

11.False

12.True

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