Year 9 Chemistry Quiz Revision

What is the pH of a neutral solution?

• 0

• 7

• 14

• 1

Which of the following is a strong acid?

• Hydrochloric acid (HCl)

• Acetic acid (CH₃COOH)

• Ammonia (NH₃)

• Sodium hydroxide (NaOH)

What is the atomic number of carbon?

• 6

• 12

• 14

• 8

Which of the following elements has the electron configuration 2, 8, 6?

• Oxygen

• Sulfur

• Chlorine

• Argon

How many valence electrons does nitrogen have?

• 3

• 5

• 7

• 8

What is the charge of an electron?

• +1

• -1

• 0

• +2

Which of the following is an isotope of carbon?

• All of the above

What is the maximum number of electrons that can occupy the second electron shell?

• 2

• 4

• 8

• 10

Which of the following is a base?

• HCl

• NaOH

• H₂SO₄

• CH₃COOH

Which of the following is the correct balanced equation for the reaction between hydrogen and oxygen to form water?