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zalisa [80]
3 years ago
5

Phenomenon: The sound of tapping on your desk is much louder and lower pitched when you listen to it with your ear pressed again

st the desk.
1. Use what you have learned to explain this phenomenon.
Chemistry
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

hi do you want to join my padlet?

Explanation:

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Match each element to the number of electrons in its valence shell.
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C: 4

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You can quickly find out the number of valence electrons by looking at where the element is on the periodic table and referring to the table that is attached.

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Which element is most plentiful in Earth's crust?
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Answer:

Oxygen is the most contain in earth but you asked in a,b,c and d. So I'll choice A. aluminium.

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3 years ago
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iren [92.7K]

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boron

Explanation:

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What happens at night?​
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