General Chemistry Question:

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Answer #1
NO BUT 1 TO 6 IS ACID 7 IS NUTURAL AFTER ALKALINE

Answer #2
1 to 6 acid
7 nutral
8 to 14 basic

Answer #3
0 to 6.9 is acid
7 neutral
> 7 to 14 basic

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When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?	Which is the best conductor of electricity?