Which Is a Pure Substance Existing as Different Phases in a Heterogeneous

question 12

Multiple Choice

Which is a pure substance existing as different phases in a heterogeneous system?

• A)Salt dissolved in water.
• B)Flour suspended in water.
• C)Cork floating in water.
• D)Ice floating in water.

---

Definitions:

Germ Layer

One of three layers in the embryo (ectoderm, endoderm, or mesoderm) from which the four primary tissue types arise.

Implantation

The process by which a fertilized egg attaches itself to the lining of the uterus where it can then develop into a fetus.

Fundus

Bottom, or rounded end, of a hollow organ—for example, the fundus of the stomach or uterus.

Uterine Tube

One of the tubes leading on each side from the uterus to the ovary; consists of the infundibulum, ampulla, isthmus, and uterine parts; also called fallopian tube or oviduct.