Physical change because it's only changing the shape of the gold.
Answer:
The solution is a base
Explanation:
A basic solution changes red litmus paper to blue. This is one unique property of a base that differentiate them from All other compound
Answer:
C)
the potential energy is increasing through steps A & B, then decreases at C.
Explanation:
What iron gives in its abundance, it takes away in it's inability to really conduct heat and electricity well. There is enough copper around, if we are careful in its use, to make copper bottomed pots and pans. Of the three best conductors in the world (silver, gold and copper) only copper has enough around and can be inexpensively mined that we make use of it.
If you google dr. copper, you will find he is an economist as well. Copper measures the wealth of an economy by how much is used. So iron might be cheaper and more abundant, but copper will save you much more in trying to do something with it.
Answer:
Ethanol is soluble in water because it has a hydroxyl group which allows it to form hydrogen bonds with the water molecules. This is why hexanol is not soluble in water.
