Question

solids, liquids, and gases
lesson 1
a. describing matter

1. a form of matter is another name for a(n) ________ of matter.

a. the three most common states of matter on earth are solids, ________, and gases.
b. most of the matter in space is in a fourth state of matter called ________, which is high - energy matter consisting of positively and negatively charged particles.

1. ________ can be described in many ways.

a. some descriptions, such as color and odor, involve using your ________.
b. other descriptions, such as mass or volume, are ________

1. particle ______ and particle ______ determine a substance’s state of matter.

a. no matter how close they are to each other, all particles have ________ motion.
b. particles that are free to move will move in a(n) ______ line until they ______ with something.

1. there is a force of ______ between positively charged ____ and negatively charged ______.

a. when particles move ______, they move closer together, and the attractive forces between them are ______.
b. when particles move ______, they move farther apart, and the attractive forces between them are ______.
b. solids

1. a solid has a definite ______ and a definite ______.

Explanation:

1. a. "Form of matter" = "state", common states: solid, liquid, gas.

b. Fourth state in space: plasma (charged particles).

1. Matter is described in ways: a. color/odor use senses; b. mass/volume are measurable (physical properties).
2. Particle arrangement and motion determine state: a. particles have constant motion; b. move straight until collide.
3. Attraction between protons (positive) and electrons (negative): a. closer (slower) → stronger attraction; b. farther (faster) → weaker attraction.

B.1. Solids have definite shape and volume.

Answer:

1. a. state; liquids

b. plasma

1. Matter; a. senses; b. measurable (or physical properties)
2. arrangement; motion; a. constant; b. straight; collide
3. attraction; protons; electrons; a. slower; stronger; b. faster; weaker

B.1. shape; volume