Test
IB Chemistry SL Topic 2
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Preguntas del test (22)
1Mass number - atomic number = number of neutrons
- AVerdadero
- BFalso
2s sub-level can hold [blank_start]2[blank_end] electrons
p sub-level can hold [blank_start]6[blank_end] electrons
d sub-level can hold [blank_start]10[blank_end] electrons
f sub-level can hold [blank_start]14[blank_end] electrons- A2
3What is the electronic configuration using orbitals called?
- AThe Aufbau Principle
- BHund's rule
4Define the Aufbau Principle.
- AElectrons will fill energy levels with the least amount of energy first.
- BElectrons will fill energy levels with the most amount of energy first.
5Define Hund's rule.
- AElectrons will occupy an orbit singularly before pairing.
- BElectrons will occupy an orbit as pairs.
6Name the two exceptions of the Aufbau Principle.
- AChromium
- BArgon
- CScandium
- DCopper
7What sub-level is lost first from transition metals?
- A4s
- B3s
- C4p
- D2p
8An emission spectra is formed when [blank_start]solids, liquids, gases[blank_end] are [blank_start]given enough energy[blank_end], [blank_start]emit light[blank_end], and this light is [blank_start]passed through a prism[blank_end].
- Asolids, liquids, gases
- Bgiven enough energy
- Cemit light
- Dpassed through a prism
9What are the properties of a continuous line spectrum?
- ASolid or liquid
- BLiquid or gas
- CAll visible wavelengths are visible and blend
- DOnly a couple of wavelengths are visible
10What are the properties of a line spectrum?
- ALiquid and gas
- BGas
- CDifferent elements emit different wavelengths (colors)
- DForms a series of bright lines on dark background
- EContinuous colors
11The [blank_start]longer[blank_end] the wavelength, the less energy.
- Alonger
12When can atoms emit light?
- AReceive energy and become excited, and the energy is released in the form of a photon.
- BLoss of energy and become excited, and the energy is gained in the form of a photon.
13First come [blank_start]gamma rays[blank_end], then [blank_start]x-rays[blank_end], then [blank_start]UV rays[blank_end], then [blank_start]visible rays[blank_end] ([blank_start]blue to red[blank_end], 10 to the power of [blank_start]negative 7[blank_end]) then [blank_start]infrared rays[blank_end].
- Agamma rays
- Bx-rays
- CUV rays
- Dvisible rays
- Eblue to red
- Fnegative 7
- Ginfrared rays
14Isotopes are [blank_start]atoms[blank_end] of a particular [blank_start]element[blank_end] that have the same [blank_start]atomic number[blank_end] but different [blank_start]mass numbers[blank_end], because they have different number of [blank_start]neutrons[blank_end].
- Aatoms
- Belement
- Catomic number
- Dmass numbers
- Eneutrons
15Carbon 12 is used so often because carbon is a [blank_start]common[blank_end] element and as a [blank_start]solid[blank_end] is easy to [blank_start]store and transport[blank_end].
- Acommon
- Bsolid
- Cstore and transport
16The five stages of mass spectrometer are [blank_start]vaporization[blank_end], [blank_start]ionization[blank_end], [blank_start]acceleration[blank_end], [blank_start]deflection[blank_end], [blank_start]detection[blank_end].
- Avaporization
- Bionization
- Cacceleration
- Ddeflection
- Edetection
17Vaporization
- ASample has to turn to gas
- BSample has to turn to liquid
18Ionisation
- AA heated filament gives out electrons. When the sample enters, it is bombarded by electrons. Collisions cause electrons to be removed from atoms/molecules of the sample, and positive ions are formed.
- BA cold filament gives out electrons. When the sample enters, it is bombarded by electrons. Collisions cause electrons to be attracted from atoms/molecules of the sample, and negative ions are formed.
19Acceleration
- AElectric field is applied and accelerates positive ions
- BMagnetic field is applied and slows down positive ions
20Deflection
- AMagnetic field deflects the beam of ions. High mass/charge ratio will be deflected less, low mass/charge ratio will be deflected more.
- BMagnetic field deflects the beam of ions. High mass/charge ratio will be deflected more, low mass/charge ratio will be deflected less.
21Detection
- AIons with correct mass/charge ratio will be detected. Magnetic field constant, electric field continuously varied, one species after another will be detected. A complete spectrum is obtained.
- BIons with correct mass/charge ratio will be detected. Magnetic field varied, electric field constant, one species after another will be detected. A complete spectrum is obtained.
22The line emission spectrum of hydrogen provides evidence for [blank_start]existence of electrons[blank_end] in [blank_start]discrete energy levels[blank_end], which converge at [blank_start]higher energies.[blank_end]
- Aexistence of electrons
- Bexistence of neutrons
- Cdiscrete energy levels
- Denergy levels
- Ehigher energies.
- Flower energies.
Información
- Descripción
- Test sobre IB Chemistry SL Topic 2 , creado por Christine Laurich el 06/09/2015.
- Autor
- Christine Laurich
- Idioma
- English
- Visitas
- 25
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- Valoración
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