I don’t know about 3 but I know that 4 is solid, 5 is you’ll feel the vibration first, 6 is you’ll see the lightning first because the speed of light is faster than the speed of sound and 7 is sound waves need a medium to travel and light waves don’t, sound waves are longitudinal and light waves are transverse, and sound waves are mechanical waves while light waves are electromagnetic waves
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I didn't do the observation so I can't help sorry
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idn Mann nnnnnnnn . .....mmmmm mmmm aaaaaaa it's a
Answer: Manganese(II) oxide
Explanation:
