Question

How can we use touch to identify whether a substance contains a base?​

Answer 1

slippery to touch and it taste bitter

hope you understand

thankyou

Answer 2

1. Its taste is bitter.
2. It turns red litmus paper to blue.
3. It contains Hydroxyl ion (HO).
4. It feels soapy to touch.
5. Example- Baking Soda, Lime Water and Soap.

Hope it helps. Please mark me BRAINLIEST.