Osnovaniia-konspekt Uroka Po Khimii 8 Klass -

Alkalis are corrosive. If they touch skin, rinse immediately with water and then a weak solution of boric or acetic acid. Common Uses: NaOHcap N a cap O cap H (caustic soda) is used in soap making; (slaked lime) is used in construction and agriculture. Practical Resources

Bases are primarily classified by their solubility in water: osnovaniia-konspekt uroka po khimii 8 klass

are complex substances consisting of a metal atom (or ammonium ion) bonded to one or more hydroxide groups ( −OHnegative cap O cap H General Formula: is a metal and is its valence. Alkalis are corrosive

Bases: Composition, Classification, and Properties. Goal: To define bases, learn how to name them, and understand their behavior in chemical reactions. 1. Definition and General Formula Practical Resources Bases are primarily classified by their

Общая характеристика оснований — урок. Химия, 8 класс. - ЯКласс

Bases formed by alkali metals (Group IA) and alkaline earth metals (Group IIA, starting from Calcium). Examples: KOHcap K cap O cap H LiOHcap L i cap O cap H Insoluble: Most other metal hydroxides. Examples: 3. Chemical Properties Alkali (Soluble) Insoluble Bases Indicator Reaction Change color (e.g., Phenolphthalein turns pink) No color change Reaction with Acids Forms salt + water (Neutralization) Forms salt + water Thermal Decomposition Stable (except LiOHcap L i cap O cap H Decompose into Oxide + Water Reaction with Acid Oxides Forms salt + water Do not react 4. Safety and Application