An unknown substance has a density of 2.5g/ml. Is this a physical or chemical property? How do you know?
1 point
Density is a chemical property because every substance has a unique density that we
can use to identify it.
Density is a physical property because we can find it for a substance without
changing the identity of the substance.
O Density is a chemical property because all chemicals have a density.
O Density is a physical property because we can measure it.

How does the digestive system interact with the circulatory system? a. messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system. b. nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system. c. nutrients and gases are absorbed by organs in the circulatory system. then, they are transported to all parts of the body by organs in the digestive system. d. oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.