What state of matter has a fixed volume and a fixed shape

a. liquid
b. gas
c. plasma
d. solid

~Hello there!

Your question: What state of matter has a fixed volume and a fixed shape ?

Your  A solid has a definite shape and volume.

The answer is option D.

Any queries?

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The answer is just took the test

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.