1. hydrogen Zn
2. chlorine phase change
3. zinc N
4. lead physical change
5. breaking glass Pb
6. melting ice H
7. nitrogen Cl
8. copper Cu
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To determine the chemical symbol of each element, you can refer to the periodic table. Each element has a unique chemical symbol assigned to it. Here's how to find the chemical symbols for the given elements:
1. Hydrogen: The chemical symbol for Hydrogen is H.
2. Chlorine: The chemical symbol for Chlorine is Cl.
3. Zinc: The chemical symbol for Zinc is Zn.
4. Lead: The chemical symbol for Lead is Pb.
5. Breaking glass: Since breaking glass is not an element, it doesn't have a specific chemical symbol. It is a physical action.
6. Melting ice: Ice is made up of water molecules, so the element is Hydrogen. Thus, the chemical symbol is H.
7. Nitrogen: The chemical symbol for Nitrogen is N.
8. Copper: The chemical symbol for Copper is Cu.
Remember, chemical symbols are used to represent elements, while physical and phase changes describe the transformations or states of matter.