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Enthalpy Change Chemistry CPT Flashcards | StudBud
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Enthalpy Change Chemistry CPT
Enthalpy Change Chemistry CPT
40 terms
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1
Is Heinsberg's Uncertainty Principle an idea where it is impossible to know the exact position and speed of an electron?
True
False
2
The Aufbau principle is..
When molecules are formed by combining atoms through electron sharing
It states how atoms build their electrons from high to low
A method to determine the order of orbitals from lowest to highest.
When electrons skip energy levels entirely and jump to the nucleus
3
What is Rutherfords definition of a Nucleus?
A jelly like substance that fills the space between cells
A dense, positively charged atomic centre
The nucleus is located outside of the cell
The nucleus is responsible for pumping blood throughout the body
4
The model for an atom based on quantum theory with calculation of probabilities for the location of electrons is..
Quantum Mechanical Model
Electron Grid Model
Static Shell Model
Bohr System Model
5
Which scientist concluded that a nucleus must contain positive and neutral charged particles?
James
Bohr
Chadwick
Charles
6
An Orbital is the region round the nucleus where an electron has a high probability of being found.
False
True
7
The name for packets of energy is called quanta.
False
True
8
The Energy Level Diagram shows..
The energies of the electron in an atom
The map gravitational pull between electrons and protons
The temperature changes in an atom during a chemical reaction
How atoms gain or lose weight during nuclear reactions
9
The idea of light striking a metal surface that causes an electron to be released is called...
Electrolysis
Electronlysis
The Photoelectric Effect
Electronegativity Effect
10
Which of the following is NOT a way of showing electron arrangement?
Energy Level Diagrams
Noble Gas Configuration
Electron Configuration
Electron Leveling Diagrams
11
Given the electron probability density, what replaced the orbits of Bohr's model?
Quantum Orbits
3D Clouds
Electron Highways
Atomic Rings
12
What is a Photoelectric effect?
A chemical reaction where light causes atoms to bond permanently
When electrons are emitted by matter that absorbs energy from radiation
It is when electricity is produced by plugging a photo divide in an outlet
It is used in cameras to store photos on film by capturing light energy
13
Is each shape NOT denoted to a specific number in the Secondary Quantum Number?
True
False
14
Does the Spin Quantum Number describe the direction an electron is spinning left and right?
True
False
15
What is a Quantum Number?
A measure of how fast a particle travels through space
The number of electrons inside the nucleus of an atom
A secret code used by quantum chemists to communicate
Numbers that describe the quantum mechanical properties of orbitals
16
Who derived the 'Uncertainty Principle' ; stating how we cannot determine the position and speed given by the electron?
John Dalton
Robert Boyle
Werner Heinsberg
Dmitri Mendeleev
17
How did Bohr improve Rutherfords model?
By using analyses from the atomic spectra
Bohr removed the nucleus completely and said the electrons float freely
By suggesting that atoms are made entirely of light and have no mass
Bohr replaced electrons with tiny magnets to explain atomic structure
18
Which one the following is NOT a type of radioactive emission?
Gamma Ray
Alpha
Beta
Sigma
19
The strong magnetism commonly exhibited by materials that contain nickel and iron.
Ferromagnetism
Radioactivity
Photosynthesis
Magnetic Field
20
Who is the founder of Quantum Theory?
John Dalton
Max Planck
Robert Boyle
Antoine Lavoiser
21
Does the Magnetic Quantum Number describe the orientation of an atomic orbital in space?
True
False
22
The spontaneous decay of the nucleus of an atom.
Radioactivity
Quanta
Blackbody Radiation
Atomic Particles
23
Is the mass of an electron approximately around 8.11 x 10^-31 kg?
True
False
24
A unit of light energy is called...
A Proton
A Photon
An Electron
A Gamma Ray
25
What is true about representative elements?
The elements that never react with any other elements
They are only found in compounds and never as pure elements
The elements in the main blocks of the periodic table
The elements that represent the total molecules
26
Which of the following is NOT used to identify Quantum Numbers?
Primary Quantum Number, m
Secondary Quantum Number, l
Magnetic Quantum Number, ml
Principal Quantum Number , n
27
What is a Radioisotope?
An isotope used for cooking to add flavour and release radiation in food
An isotope that is an instrument that emits sound using radioactive waves
It is a stable element that never decays
An isotope with an unstable nucleus
28
Is 'Spectrascaping' the technique called to analyze atomic spectra?
True
False
29
How did Quantum Theory come to exist?
When Newton noticed that particles were behaving weirdly
It was discovered through a cooking experiment
Quantum Theory was invented by science fiction writers
Newtons Laws were unable to explain how matter behaves in atomic levels
30
Which scientist aided Albert Einsteins idea of the photoelectric effect?
Chadwick
Planck
Dalton
Rutherford
31
Should people take grade 12 Chemistry??
YEAHH
YES YES YES
Yes in yellow.
YASS
32
What does Hund's Rule state?
Lowest energy configuration is the one with the max # of unpaired electrons
How electrons always pair up in the lowest energy orbitals
Electrons wanting to spin oppositely to create magnetic attraction
It states that electrons want to avoid all orbitals except the first one
33
Blackbody radiation is the thermal radiation emitted from heating solid objects.
False
True
34
Which of the following is the correct sequence for electron configuration?
1s, 2s, 2p, 3s, 3d
1s, 2s, 2p, 3s, 3p
1s, 2s, 2p, 2d, 3s
1s, 1p, 2s, 2p, 2d
35
What is Pauli's Exclusion Principle?
No two electrons can have the same set of four quantum numbers
The principle states how two protons can never exist in the same atom
When electrons love to pair up with identical spins to form strong bonds
It is when particles always avoid each other by travelling oppositely
36
Paramagnetism is a weak attraction of an element to magnet due to less unpaired electrons.
True
False
37
The Magnetic Quantum Number describes orientations of sub shells by the letters of...
s, p, d ,f
s, t, d, f
s, p, a, f
s, p, d, l
38
Transition metals is an element whose highest energy electrons are in the d-orbitals.
False
True
39
Thompson compared a spherical cloud of positive charge with electrons to a food item, which is?
A Blueberry Muffin
A loaf of bread
A piece of meat
A Strawberry
40
Does the nucleus of each carbon isotope have the same atomic number AND mass number?
True
False
