Question

Hi can someone please help me due tonight at 8pm UK time

1. when salt is extracted from rock salt, is this a physical change or a chemical change?

2.what is flitration?

Please can someone explain to me what purifying rock salt? {I missed most the lesson}

Answer 1

Answer:

ans 1 Therefore, dissolving salt in water is a chemical change. The reactant (sodium chloride, or NaCl) is different from the products (sodium cation and chlorine anion). Thus, any ionic compound that is soluble in water would experience a chemical change.

ans 2 process of filtering water by filter paper is known as filtration . filtration used to filter tea leaves .

and 3 Rock salt or halite is a mineral the contains sodium chloride (table salt) as well as other minerals and impurities. You can remove most of these contaminants using two simple purification techniques: filtration and evaporation.

pls give me brain list