Chemistry is the study of matter and the changes it undergoes, with the atom being its basic functional unit.
Concept: Understanding Matter4m
Matter is anything that takes up space and has mass.
Concept: Classifications of Matter3m
Under appropriate conditions of pressure and temperature, most substances can exist in 3 states of matter.
Concept: Volume, compressibility and viscosity of phases of matter6m
The closeness of molecules within the three phases of matter affects how they respond to changes in volume, pressure and temperature.
Concept: Homogeneous vs. Heterogeneous Mixtures2m
Concept: Physical vs. Chemical Changes2m
A physical change involves a change in the phases of matter, whereas a chemical change involves a change in chemical bonds.
Example: Which of the following represents a physical change?
Alkanes burn spontaneously.
The sublimation of CO2.
2 H2 (g) + O2 (g) ----> 2 H2O (g)
The rusting of a car.4m