Chapter 1- Pure Substances

Question 0

3 properties of a pure substance

Answer 0

1. It has a definite composition
2. All samples have some characteristic properties
3. Cannot be separated without changing the identity or properties

Question 1

Pure substance

Answer 1

Form of matter with fixed compositions

Question 2

2 types of pure substance

Answer 2

Elements and compounds

Question 3

3 properties of compounds

Answer 3

1. Properties are different that its components
2. Definite composition
3. Chemical combinations can be decomposed chemically

Question 4

3 properties of an element

Answer 4

1. Definite compositions
2. Properties of all samples are the same
3. They can’t be decomposed at all, physically or chemically

Question 5

2 methods of chemically decomposing a compounds

Answer 5

Heating and electrolysis

Question 6

Can a compounds be a heterogenous mixture?

Answer 6

No bc it has a definite composition and it is chemically combined, a compound is homogenous