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

  1. the particle theory of matter
  2. elements, compounds, mixtures, acids, bases, salts, organic, inorganic, solids, liquids, and gases;
  3. characteristics of types of matter based on physical and chemical properties;
  4. physical properties (shape, density, solubility, odor, melting point, boiling point, color); and
  5. chemical properties (acidity, basicity, combustibility, reactivity).

Matter

solid

liquid

gas

Particle Theory of Matter

  1. Matter is made up of tiny particles (atoms & molecules) that are in constant motion and held together by strong electric forces.
  2. Temperature affects the speed of the particles. The higher the temperature, the faster the speed of the particles.
  3. There are large empty spaces between the particles.
  4. Each substance has unique particles that are different from the particles of other substances.

Matter: Elements, Compounds, Mixtures

Compounds: Acids vs. Bases; Inorganic vs. Organic

Compounds can be classified in several ways including:

The pH Scale

Physical Properties of Matter

Chemical Properties