5 Answers
Sodium oxide
Calcium oxide
Zinc oxide
Potassium hydroxide
Aqueous ammonia
Good job
Sodium hydroxide or caustic soda
Calcium hydroxide or lime water
Ammonium hydroxide or ammonia water
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Sodium oxide
Calcium oxide
Zinc oxide
Potassium hydroxide
Aqueous ammonia
Good job
Sodium hydroxide or caustic soda
Calcium hydroxide or lime water
Ammonium hydroxide or ammonia water
You tried
Sodium oxide, sodium hydroxide, potassium hydroxide etc