Explain if the combination of the sponge and the Sulphuric Acid is an example of a chemical reaction. Use evidence and scientific reasoning to support your answer.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

What is the atomic number of an atom that has 6 protons

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium