Answer:
Calcium
Explanation:
Clacium has atomic number 20. The atomic number. This means that it has 20 protons and 20 electrons. it has 21 neutrons.
The price of 1 gallon of gasoline in U.S. dollars in France is $4.87
Rubbing Alcohols are chemical compounds because rubbing alcohol itself is a strecture made up of many different chemicals combinding in a compound that make, C3H8O
Answer:
Chemistry is the study of matter and energy and the interactions between them. You could use chemistry in most fields, but it's commonly seen in the sciences and in medicine.Chemists, physicists, biologists, and engineers study chemistry.
Explanation:
