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Covalent Bonds
Form between 2 non-metals. Non metals all need electrons to complete their valence shells. Non-metals will share electrons to complete their valence electrons.
Covalent Held Together
Made of molecules, individual dumps of atoms that then come to make a bigger clumps. However, in water, it comes apart in molecules
Ionic Held Together
Made of lattice structures. All the atoms are stuck together in this regular stuff. Water makes it comes apart in individuals.
Electronegativity
A measure of an atom’s ability to attract elements of a bond.
Polar Solvent: Water
Oxygen has two long electrons pairs that repel each other and the electrons bonded to the hydrogen atoms. Oxygen side has a partial negative charge, hydrogen and partial positive charge.
Ionic Compounds: Properties
It is very hard, and strong ionic bonds are hard to break. The melting point is very high, and would need a great deal of energy of seperating ions. It is usually soluble in water, and in non-polar solvent, and it is not solube. It is also very brittle. Solid ionic compounds do not conduct electriciity, molten ionic compounds do conduct electricity.
Covalent Compounds Properties
It is very soft and easy to push molecules away from each other because the forces between molecules are weak. There are little energy is needed to break forces. It is not soluble, and in non-polar solvent, it is soluble. Solids and liquids do not conduct electricity becuse there are no free charged particles in molecules.
Ionic: Odour
Stronger forces of attraction between particles because they are the harder solids, have a very high melting point, do not release it.
Covalent: Odour
Weak intemolecular forces in covalent bonds allow for the compound to be vaporous, molecules can fly up in the air and touch sensors in our nose.
Decrepitation
Sound when bigger sodium chlorine (NaCl) crystals split to small ones. Water evaporates, crystals are heated, salt crystals to crack as it deports.
