Question

using key terms

1. use each of the following terms in a separate sentence: viscosity and surface tension.

understanding key ideas

1. one property that all particles of matter have in common is they

a. never move in solids.
b. only move in gases.
c. move constantly.
d. none of the above

1. describe solids, liquids, and gases in terms of shape and volume.

critical thinking

1. applying concepts classify each substance according to its state of matter: apple juice, bread, a textbook, and steam.
2. identifying relationships the volume of a gas can change, but the volume of a solid cannot. explain why this is true.

Explanation:

1.

Viscosity refers to a fluid's resistance to flow. For example, honey has high viscosity as it flows slowly. Surface tension is the property of a liquid's surface that allows it to resist an external force. Water droplets form a spherical shape due to surface tension.

All particles of matter, whether in solids, liquids or gases, are in constant motion. In solids, they vibrate in place, in liquids they move more freely and in gases they move rapidly.

Solids have a definite shape and a definite volume as the particles are closely packed and have strong intermolecular forces. Liquids have an indefinite shape (take the shape of their container) but a definite volume as the particles are close together but can move past each other. Gases have an indefinite shape and an indefinite volume as the particles are far apart and move freely.

Answer:

Sentences for viscosity and surface tension are provided above.

2.