Which process is a chemical change?
1. freezing of liquid water to solid ice
2. condensation of gaseous steam to liquid water
3. boiling of liquid water to gaseous steam
4. decomposing of water to hydrogen gas and oxygen gas

Why does a cake rise when you bake it? ♡

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.