Determine if each of the following statements is True or False about sigma (σ) bonds and pi (π) bonds.

1) A single bond could be either a sigma (σ) bond or a pi (π) bond.

2) A sigma (σ) bond could be formed when an s orbtial and a p orbital overlap end-to-end.

3) Sigma (σ) bonds can be formed by the overlap of an orbital and a hybrid orbital.

4) The picture below represents the formation of a pi (π) bond.