Physical property- is an aspect of matter that can be observed or measured without touching changing it.
Chemical property- may only be observed by changing the chemical identity of a substance.
The difference would be that for physical property's you dont need to do anything to figure out what they are, but for chemical properties you need to change something to observe them.
The mass of an atom is given by the sum of the number of PROTONS and the number of NEUTRONS since ELETRON'S mass is negligible.
The mass is 24+28 = 52.
Answer:
It helps them to swim
I think this ans may help you
Sea arch, headland, sea cave, cliff, sea stack sorry if I’m wrong hope this helped
Answer:
An element is to a compound as an organ is to tissue
Explanation: