The element with the chemical symbol Pb

The 2 elements present in all organic compounds

Molluscs with three hearts, nine brains and blue blood

The state song for the beautiful state Nebraska

Japanese word for the day after tomorrow

The group of elements with highly varying oxidation states

Reaction used to break an ester down into a carboxylic acid and alcohol

Known as the smallest country in the world

This town on the York River was the site of the last major battle of the American revolution

A series of campaigns waged by William the Conqueror in 1069

Element with the electronic configuration [Ne] 3s² 3p⁴

Compounds with the same molecular formula but differ in spatial arrangement of constituent atoms

Name given to a group of owls

Frankfurt is the main city on this German river

Known in Chinese mythology as the Mother goddess, creating humanity and repairing the pillar of heaven

Solution used to test for halide ions

An elements ability to exist in 2 or more different physical forms

A very thin filament of a hard to melt metal, such as tungsten, encased in glass filled with inert gases to prevent the filament from oxidising or disintegrating

Gemstone similar to an onyx, with alternating bands of sard on it

The constant that is constant in space but not constant in time

The spontaneous emission of a positively charged particle equivalent to helium

The name given to the compound with the formula C5H5N5O

The first battle won by the Americans during the American revolution

The Arabic word 'Sahara' in Sahara desert

The number of ways you can make change for ten U.S dollars to the nearest million