Ammonia reaction with water (and phenolphthalein)

[@sararat2541]

Thank you 🙏

[@kaim5546]

chemical change or physical halp

[@oranges13]

chemical

[@nurinnaziefa4211]

Hello, Why it turns from colourless to pink in the test tube?

[@isabelw.9565]

It's the indicator(Phenolphtalein)