How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

On a power source such as a battery, the anode is labelled with a + (plus)

The cathode on the other side is labelled with a - (minus)

When ionic compounds ionize, they produce both positive and negative ions.

Anion- This is a negatively charged ion for example chloride ion (Cl⁻)

Cation- This is a positively charged ion for example sodium ion (Na⁺)

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.