Hydrogen bromide (HBr)

One of the hydrogen halides, it is used for the production of alkyl bromides.

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Nitrate ion (NO₃⁻)

A compound ion, the main source of nitrogen for plants.

Nitrous acid (HNO₂)

One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that...

Copper sulphate (CuSO₄)

A compound of sulphur often used as a pesticide.

Hydroxide ion (OH⁻)

A compound ion formed when a water molecule releases a proton.

Dangerous plastic

Environmental organisations are against the use of PVC.

Oxidising and reducing agent within a single compound

Decomposition of ammonium dichromate by heating.

White phosphorus (P₄)

One of the allotropes of phosphorus.

Oxygen (O₂) (intermediate)

A colourless, odourless gas, an important component of the atmosphere, indispensable to...

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