Answer:
The law of conservation of mass
Explanation:
A chemical equation is an expression of the net composition change associated with a chemical reaction. It shows how a certain amount of reactants yields a certain amount of products. Both of these amounts are measured in moles. Chemical equations often contain information about the state of the reactants: solid, liquid, gas, or aqueous. In addition, they always adhere to the law of conservation of mass, which holds that matter can change form, but cannot be created or destroyed.
Gold is classified as a Solid
Calcium carbonate is <span>marble.
CaCo</span>₃ is marble.
Answer:
Chlorine has seven valence electrons
Explanation:
The dot structure of chlorine was just described in the question. The two dots above, below and by the left are three lone pairs making a total of six electrons. There is another one black dot indicating one electron.
This one electron on both chlorine atoms combine to form the chlorine molecule Cl2.
