AQA AS Chemistry, paper 1 MCQ practice

Which of these elements has the second highest ionisation energy?

• Na

• Mg

• Ne

• Ar

Which of these has the highest first ionisation energy?

• Na

• Al

• Si

• Cl

What is element X?

• Nitrogen

• Phosphorous

• Aluminium

• Boron

Chlorine exists as two isotopes 35-Cl and 37-Cl in the ratio 3:1

Which statement about peaks in the mass spectrum of Cl₂ is correct?

• Peaks at m/z = 70 and 74 in the ratio 3:1

• Peaks at m/z = 70, 72 and 74 in the ratio 9:6:1

• Peaks at m/z = 70, 72 and 74 in the ratio 9:3:1

• Peaks at m/z = 70 and 72 in the ratio 3:1

Which of these has the smallest number of neutrons?

• ³ H

• ⁴ He

• ⁵ He

• ⁴ Li

Which statement about time of flight mass spectrometry is correct?

• The current in the detector is proportional to the ion abundance

• Sample particles gain electrons to form positive ions

• Particles are detected in the order of their kinetic energies

• Ions are accelerated by a magnetic field

Which element is in the d-block of the Periodic Table?

• Selenium

• Antimony

• Tantalum

• Lead

What volume of water should the student add?

• 45.0cm³

• 95.0cm³

• 100cm³

• 995cm³

What mass of nitrogen was present in the sample?

• 0.041g

• 0.057g

• 0.074g

• 0.420g

Which of these samples of gas contains the largest number of molecules?

The gas constant R = 8.31 J K^-1 mol^-1

• 5.0 x 10^-4 m³ at 1.0 x 10⁶ Pa and 300K

• 4.0 x 10^-3 m³ at 2.0 x 10⁵ Pa and 400K

• 3.0 x 10^-1 m³ at 3.0 x 10⁴ Pa and 500K

• 2.0 x 10^-2 m³ at 4.0 x 10³ Pa and 600K