Question

question 4 1 pts which type of chemical reaction results in the breakdown of a complex substance into two or more simpler substances? exchange reaction synthesis reaction reversible reaction decomposition reaction question 5 1 pts as the concentration of hydroxide ions (oh⁻) increases, the: solution becomes more basic. solution becomes more acidic. ph rises. both a and c are correct. question 6 1 pts an element that contains the same number of protons but different numbers of neutrons is called a(n) ion. isomer. isotope. bond

Explanation:

• Question 4: Decomposition reactions break down complex substances into simpler ones. Exchange reactions involve the swapping of components, synthesis reactions build complex substances from simpler ones, and reversible reactions can go in both forward and reverse directions.
• Question 5: Hydroxide ions ($OH^-$) are associated with basicity. As their concentration increases, the solution becomes more basic and the pH rises since pH is related to the concentration of hydrogen ions and hydroxide - ions in an inverse - logarithmic way.
• Question 6: Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons. Ions are charged particles, isomers are molecules with the same formula but different structures, and bonds are the forces that hold atoms together.

Answer:

Question 4: decomposition reaction
Question 5: Both A and C are correct
Question 6: isotope