Changes

'''Sodium hydroxide''', (molecular formula: NaOH) is a white, crystalline, odorless solid that absorbs moisture from the air. It is a manufactured substance. When dissolved in water or neutralized with acid it liberates substantial heat, which may be sufficient to ignite combustible materials. Sodium hydroxide is very corrosive. It is generally used as a solid or a 50% solution.

'''Sodium hydroxide''', (molecular formula: NaOH) is a white, crystalline, odorless solid that absorbs moisture from the air. It is a manufactured substance. When dissolved in [[water]] or neutralized with acid it liberates substantial heat, which may be sufficient to ignite combustible materials. Sodium hydroxide is very corrosive. It is generally used as a solid or a 50% solution.