C. chlorophyll
gc sh jj cd dhjjfddr
The s sublevel has only one orbital
C. Lowering the temperature
At the lower temperature, particles have less kinetic energy, so they move slower.
1. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.
2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).
3. A pure substance is pure, while a mixture is impure.