Answer: Both are chemical changes.
Explanation:
Tarnish can be defined as the product of the chemical reaction that occurs between a metal and a no-metal. The metal which is exposed to the moisture or get oxidized develop a thin layer called tarnish. Copper, silver, brass, magnesium and other metals get tarnished.
The polish removes the chemical product of tarnishing and keeps the silver in silver spoon intact. This involves the chemical reaction.
Salt and vinegar are the ingredients of the chemical formulation which can remove the chemical product of the tarnishing from penny. This involves the chemical reaction.
Both polish and silver and vinegar can bring a chemical changes in the metal without introducing the physical change as they do not affect the physical structure of the metal.
Answer:
I don't know which group because there is no groups shown in your question only the question.
Explanation:
I can't answer without any groups...
Answer:
Japan was geographically isolated from other regions
Explanation:
Answer:
When we fought for the rights to keep are guns.
It is kinda sad becouse people died fighting so that we could keep our guns and then with Hiliry she just wanted to take them away again. Which would ruin the point of that hole war
Explanation:
