I) Strongly acidic: A solution is strongly acidic if its pH value is low (far below 7). From the table, Solution A has a pH of 3.0.

6. a)

i) Strongly acidic: A solution is strongly acidic if its pH value is low (far below 7). From the table, Solution A has a pH of 3.0.

• Solution A: pH = 3.0
• Solution B: pH = 13.0
• Solution C: pH = 8.5
• Solution D: pH = 7.0

Therefore, the strongly acidic solution is A.

ii) Strongly basic: A solution is strongly basic if its pH value is high (far above 7). From the table, Solution B has a pH of 13.0.

Therefore, the strongly basic solution is B.

7. a) i) Define: Atomic number
The atomic number is the number of protons found in the nucleus of an atom. It uniquely identifies a chemical element.