Answer:
you can identify an unknown substance by measuring its density and comparing your results to a list of known densities. Density=mass/volume. Assume that you have to identify an unknown metal. You can determine the mass of the metal on a scale.
An electron
there is no table but an electron has a charge of -1
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Hope this helps ;D</h2><h2>
</h2><h2>
Kenny </h2>
Answer:
very reactive non metals
Explanation:
keep working on her class
This is bohr model of argon
good luck
