Question

part 3: match each diagram with its correct description. diagrams will be used once.

1. pure element - only one type of atom present.
2. mixture of two elements - two types of uncombined atoms present.
3. pure compound - only one type of compound present.
4. mixture of two compounds - two types of compounds present.
5. mixture of a compound and an element.

part 4: column a lists a substance. in column b, list whether the substance is an element (e), a compound (c), a heterogeneous mixture (hm), or a solution (s). (remember a solution is a homogeneous mixture.) in column c, list two physical properties of the substance.
column a column b column c

1. summer sausage
2. steam
3. salt water
4. pencil lead (pb)
5. dirt
6. silver (ag)
7. toothpaste (na₂hpo₄)
8. italian dressing
9. lemonade

Explanation:

Step1: Analyze pure element

Diagram C has only one - type of atom, so 1 - C.

Step2: Analyze mixture of two elements

Diagram E has two types of uncombined atoms, so 2 - E.

Step3: Analyze pure compound

Diagram B has only one type of compound, so 3 - B.

Step4: Analyze mixture of two compounds

Diagram A has two types of compounds, so 4 - A.

Step5: Analyze mixture of compound and element

Diagram D has a compound and an element, so 5 - D.

Answer:

1. C
2. E
3. B
4. A
5. D