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2. Properties of metals, metalloids and nonmetals - Wikipedia

   en.wikipedia.org/wiki/Properties_of_metals...

   For seven decades, fluorosulfonic acid HSO 3 F and trifluoromethanesulfonic acid CF 3 SO 3 H were the strongest known acids that could be isolated as single compounds. Both are about a thousand times more acidic than pure sulfuric acid. In 2004, a boron compound broke this record by a thousand fold with the synthesis of carborane acid H(CHB 11 ...

3. Acetone - Wikipedia

   en.wikipedia.org/wiki/Acetone

   Acetone (2-propanone or dimethyl ketone) is an organic compound with the formula (CH 3) 2 CO. [22] It is the simplest and smallest ketone (>C=O).It is a colorless, highly volatile, and flammable liquid with a characteristic pungent odour, very reminiscent of the smell of pear drops.

4. Adhesive - Wikipedia

   en.wikipedia.org/wiki/Adhesive

   Adhesive. Adhesive, also known as glue, cement, mucilage, or paste, [1] is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation. [2] The use of adhesives offers certain advantages over other binding techniques such as sewing, mechanical fastenings, and welding.

5. Chelation - Wikipedia

   en.wikipedia.org/wiki/Chelation

   Chelation. Chelation is a type of bonding of ions and their molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central metal atom. [1][2] These ligands are called chelants, chelators, chelating agents, or sequestering agents.

6. Hydrogen bond - Wikipedia

   en.wikipedia.org/wiki/Hydrogen_bond

   A symmetric hydrogen bond is a special type of hydrogen bond in which the proton is spaced exactly halfway between two identical atoms. The strength of the bond to each of those atoms is equal. It is an example of a three-center four-electron bond. This type of bond is much stronger than a "normal" hydrogen bond.

7. 13 Condiments You Should Never Eat After They Expire ... - AOL

   www.aol.com/13-condiments-never-eat-expire...

   With that info out of the way, here are 13 condiments you should never eat after their expiration dates (and in some cases, may even need to toss earlier). Mayo Needs to Be Tossed Two Months After ...