Page 165 - Science Course 1 (Book 1)

Mo5-L2b: How Do Particles Move in Solids, Liquids, and Gases?

Mo5-L2b How Do Particles Move in Solids, Let’s Begin
Liquids, and Gases?
Solids
KEY CONCEPTS:
1. Describe the movement of particles in a solid and A solid is matter that has a definite shape and a
the forces between them. definite volume.
2. Describe the movement of particles in a liquid and
the forces between them. The attractive forces between the particles in a solid
3. How do particles move and interact in a gas? are strong and pull them close together.

- Definite shape
Vocabulary A-Z - Particles tightly
packed
Let us learn some vocabulary - Strong attractive
forces
- Particles vibrate
in place.

Viscosity
is a measurement of
a liquid’s resistance
to flow. Different particle arrangements give materials differ-
ent properties.

A diamond is a crystalline solid with particles
arranged in a specific, repeating order. Charcoal is
an amorphous solid with randomly arranged
particles.

Surface tension
is the uneven forces acting on the particles on the
surface of a liquid.

CRYSTALLINE

Vapor
is the gas state of a substance that is normally a
solid or a liquid at room temperature

AMORPHOUS

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