Classify the following into elements, compounds and mixtures. Sodium, Soil, Sugar solution, Silver, Calcium carbonate, Tin, Silicon, Coal, Air, Soap, Methane, Carbon dioxide, Blood.

1. Elements:
– Sodium (Na)
– Silver (Ag)
– Tin (Sn)
– Silicon (Si)

2. Compounds:
– Calcium carbonate (CaCO3)
– Methane (CH4)
– Carbon dioxide (CO2)

3. Mixtures:
– Homogeneous Mixtures:
– Sugar solution: A homogeneous mixture of sugar dissolved in water.
– Air: A homogeneous mixture of gases, including nitrogen, oxygen, carbon dioxide, and others.

– Heterogeneous Mixtures:
– Soil: A heterogeneous mixture of minerals, organic matter, water, and air.
– Coal: A heterogeneous mixture of organic matter, minerals, and other components.
– Soap: A mixture of various compounds and ingredients.
– Blood: A complex mixture of cells, proteins, water, and other substances.