2. Atomic Structure IB Chem SL

Which is the lightest sub-atomic particle?

• proton
• electron
• neutron
• nucleus

What does A stand for in the shorthand notation for an atom or ion?

• mass number
• atomic number
• charge

What does Z stand for in the shorthand notation for an atom or ion?

• mass number
• atomic number
• charge

How many neutrons in Ti-48 (atomic number 22)?

• 48
• 22
• 70
• 26

What are isotopes?

• charged atoms
• radioactive elements
• elements with different numbers of neutrons

What property is different between two isotopes?

• chemical properties
• physical properties
• biological properties

What causes deflection in the mass spectrometer?

• magnetic field
• electric field

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

How are atoms ionised by the mass spectrometer?

• by being hit with high-speed electrons
• by having electrons added to them
• by exposing to an electric field

What affects the deflection in a mass spectrometer?

• the mass and charge of the ion
• the mass of the ion only
• the charge of the ion only
• the velocity of the ion

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-5

What are radioactive isotopes not used for?

• nuclear power generation
• tracers in medicine for treating and diagnosing illness
• carbon dating
• internal combustion engines