Copper atom has 29 protons and 34 neutrons in its nucleus
An element is just consisted of one type of atom and cannot be broken down by chemicals (Ex. Oxygen just has the oxygen molecule)
A compound is when there's a mixture of atoms and can be broken down by chemicals (Ex. NaCl is made up of sodium and chloride atoms)
Answer:
copper has 2+ ions in a sample of copper
1. Option A. Temperature and Salinity
2. Option D. (I think)
3. Option D.
Hope your test goes well!
The action was him hitting the ball the reaction was the ball moving after being hit
