Question

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.

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: Identify element/compound/mixture

1. Summer Sausage: HM, heterogeneous mixture (meat, spices etc.). Physical properties: texture, color.
2. Steam: S, gas - phase solution of water. Physical properties: temperature, pressure.
3. Salt Water: S, solution of salt in water. Physical properties: density, boiling - point.
4. Pencil lead (Pb): E, element. Physical properties: softness, gray color.
5. Dirt: HM, heterogeneous mixture of soil, debris etc. Physical properties: particle size, smell.
6. Silver (Ag): E, element. Physical properties: luster, conductivity.
7. Toothpaste (Na₂HPO₄): C, compound. Physical properties: viscosity, flavor.
8. Italian Dressing: HM, heterogeneous mixture of oil, vinegar etc. Physical properties: separation over time.
9. Lemonade: S, solution of sugar, acid etc. in water. Physical properties: taste, color.

Answer:

Column A	Column B	Column C
2. Steam	S	temperature, pressure
3. Salt Water	S	density, boiling - point
4. Pencil lead (Pb)	E	softness, gray color
5. Dirt	HM	particle size, smell
6. Silver (Ag)	E	luster, conductivity
7. Toothpaste (Na₂HPO₄)	C	viscosity, flavor
8. Italian Dressing	HM	separation over time
9. Lemonade	S	taste, color