Answer:
Physical Properties
Explanation:
You are able to see physical properties but are unable to see chemical properties.
C because a compound is a substance made of at least two atoms bonded together
Answer:
5
Explanation:
An atom has the same number of protons and electrons
Enzymes
i got this from google
Enzymes<span> are soluble protein molecules that can speed up chemical reactions in cells. These reactions include respiration, photosynthesis and making new proteins. For this reason </span>enzymes<span> are sometimes called biological catalysts</span>