A physical property is O onethat describes using our 5 sences
O stops when a chemical reaction is occurring
one that makes something new
O one that describes a chemical change.

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water