Indicators - The things or solutions that give different colours with acids and bases, Sulpuric acids - The acid That frequently used in the laboratory, Potassium Hydroxide - a strong base frequently used in the laboratory, kerosene - a neutral substance, Arecanut boiled water - a natural indicator,

Grade 7 Acids and Bases unit 5

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?