Composition of Universe
by Dhillon Arjun

1. Energy
1.1. Kinetic
1.2. Potential
1.3. Photons (Light)
2. Matter
2.1. Solids
2.2. Liquids
2.3. Gases
2.4. Plasma
2.5. Pure Substances
2.5.1. Elements
2.5.1.1. Compounds
2.5.1.2. Mixtures
2.5.1.2.1. Homogeneous
2.5.1.2.2. Heterogeneous
2.6. Density
2.6.1. Volume
2.6.2. Mass