Question

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Answer 1

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1. Differences and similarities between metals and non-metals. Mainly solids at room temp. Exception mercury - liquid at room temp. When they form ions, the ions are negative - except hydrogen that forms a positive ion, H+.

2. Remember that most elements are metals, rather than non-metals. The table summarises some differences in their properties.

See pics non metals list
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Answer 2

✴Density of Metals are:-

[1] Actium=> g/cm3 is 10.
[2] Aluminum=> g/cm3 is 2.70.
[3] Barium=> g/cm3 is 3.62.
[4] Bismuth=> g/cm3 is 9.79.
[5] Calcium=> g/cm3 is 1.54.

✴Density of Non-Metals are:-

[1] Oxygen=> 1.429 g/L
[2] Hydrogen=> 0.0893 g/L
[3] Helium=> 4.003 g
[4] Nitrogen=> 1.2504 g/L
[5] Sulphur=> 2 g/cm3
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✴Properties of Metals are:-

[1] Malleable
[2] Ductile
[3] High density
[4] Strong strength
[5] Solid at room temperature

✴Properties of Non-Metals are:-

[1] No metallic luster
[2] Low density
[3] No Malleable
[4] High ionization energies
[5] Poor electrical conductors