Question

Why is salt taste salty​

Answer 1

Answer:

Because the salt is taken from sea and sea is salty so the salt is salty

Answer 2

Answer:

When one tastes salt, the saltiness taste receptors respond specifically to the sodium cation. That type of taste receptor is a cation channel. This is why lithium and potassium cations also taste salty (though they also stimulate other receptors which make them taste somewhat different).