Pure sodium metal explodes when it makes contact with water. In its natural state, chlorine is a deadly, poisonous gas. When these two chemicals combine, they form a harmless, white powder known as sodium chloride or table salt. Which of the following statements does this information support?

Question

abbiegarrison · Answer

what are the answer choices?

Vocaloid · Answer

A. The properties of substances change during chemical reactions but then later go back to their original condition.

B. Heat must be added in order to change the chemical properties of substances.

C. When substances are chemically combined, the properties of the new substances that are formed are often different from the properties of the original substances.

D. When substances are chemically combined, the properties of the new substances that are formed are the same as the properties of the original substances.

Vocaloid · Answer

Re-read the problem.

Before vs after combining, what are the properties of sodium and chlorine vs. salt?

Do the properties change or stay the same?