Science - 2017-18

PS.2 a, c - Particle Theory

The student will investigate and understand the nature of matter. Key concepts include

a) the particle theory of matter; and

c) solids, liquids, and gases.

Bloom's Levels: Analyze; Understand

Adopted: 2010


  • Everything in the world is made up of matter.¬†
  • All matter is made of particles.
  • Matter can exist in several different states, including solids, liquids, gases, and plasma.

  • I can explain why balloons deflate over time.
  • I can identify an unknown substance found on the kitchen counter.


  • Matter is anything that has mass and occupies space. All matter is made up of small particles called atoms. Matter can exist as a solid, a liquid, a gas, or plasma.
  • Matter can be described by its physical properties, which include shape, density, solubility, odor, melting point, boiling point, and color. Some physical properties, such as density, boiling point, and solubility, are characteristic of a specific substance and do not depend on the size of the sample. Characteristic properties can be used to identify unknown substances.
  • Equal volumes of different substances usually have different masses.


In order to meet this standard, it is expected that students will

a) describe the particle theory of matter.

c) describe the properties of solids, liquids, gases, and plasma.


matter, particle theory of matter, element, compound, mixture, solvent, pH scale, base, salt, acid, solute, inorganic compound, organic compound, density, physical property, chemical property

Updated: Nov 24, 2017