hydrogen
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Ionic bond covalant bond hydrogyn bond
Examples of pure substance: gold, silver, carbon dioxide, hydrogen
jhi
Silicone has 4 valence electros so it would need 4 hydrogen atoms to give itself an octet of valence electrons.
give me 5 examples of heterogeneous
They don't readily give or recieve hydrogen atoms.
A mole is a quantity of substance which has Avogadro's number of molecules or atoms in it.
Examples: density, hardness, boiling point, refractive index.
An ionic bond. A metal bonding with a non-metal will always give you an ionic bond.
A substance that cannot be broken down (science)
substance that produce adverse biological effect such as lead