Answer:
optical (optic is the word used for referring to the eye ie optic nerve)
Explanation:
Answer:
A larger nuclear charge :)
Explanation:
ANSWER:
Physical chemistry is the branch of chemistry that deals with the physical structure of chemical compounds, the way they react with other matter and the bonds that hold their atoms together. An example of physical chemistry is nitric acid eating through wood.
All atoms of the same element have the same
number of protons. Every atom also has a nucleus.
A. They speed up chemical reactions
