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Honors Chemistry Exam Review Chapters 1 & 2 Flashcards | StudBud
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Honors Chemistry Exam Review Chapters 1 & 2
Honors Chemistry Exam Review Chapters 1 & 2
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Honors Chemistry Exam Review Chapters 1 & 2
Flashcards
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Questions
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Answers
1
Which item best represents Bohr's mental image of an atom?
a balloon full of air
the solar system
a marble
a candy bar with nuts
2
Convert 65 km/h to m/s
234
18
23.4
180
3
Which of the following is an example of a compound?
B
B and C
A
C
4
What element is represented by the orbital diagram notation below?
Nitrogen
Chlorine
Neon
Fluorine
5
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ___. The element is ________.
52 , Tellurium
30, Zinc
56, Iron
26 , Iron
6
The number 100,000 grams has how many sig figs?
1 sig fig
3 sig fig
4 sig fig
6 sig fig
7
Why have scientists had problems describing the shape and content of an atom?
Atoms are constantly changing
Because Mrs. Gorski says so!
too small to be seen; current microscopes don't show details
There is just no not enough mathematical data to support it for now.
8
What is the difference between an element and a compound?
Elements are made of more than one atom.
Only elements are pure substances.
Compounds are made of more than one type of atom.
Compounds have uniform composition.
9
Which classification(s) of matter is(are) pure substances?
Compounds
Elements and mixtures
Elements
Elements and compounds
10
Which two particles would be attracted to each other?
protons and neutrons
electrons and neutrons
all three are attracted to each other
electrons and protons
11
Which of the following is NOT a developer of an atomic model?
Rutherford
Thomson
Planck
Dalton
12
What type of electromagnetic radiation has the shortest wavelength and the highest frequency?
Infrared
Ultraviolet
X-Ray
Gamma
13
What is the ground state electron configuration for silver?
[Kr]5s24d9
[Kr]5s25d9
[Xe]5s24d9
[Ar]4s23d9
14
Which of the following determined that cathode rays are negatively charged?
Aristotle
Rutherford
Thomson
Dalton
15
How many seconds are in 24 hours?
1440
5,184,000
24,000
86,400
16
What element is 1s
2
2s
2
2p
6
3s
2
3p
5
Chlorine
Sulfur
Fluorine
Bromine
17
Which of the following statements about the atom is false?
Electrons travel definite circular paths around the nucleus
All atomic nuclei are positively charged.
All the mass (protons and neutrons) is located in the nucleus.
Each atom has a tiny, dense nucleus at its center.
18
Any material consisting of only one type of atom is classified as what?
A homogenous mixture
An element
A heterogenous mixture
A compound
19
In a _______ mixture, the material has the same composition throughout.
homogenous
ion
isotope
heterogeneous
20
The electron configuration of a copper atom is
[Ar]4s2 3d10
[Ar]4s1 3d10
[Ar]4s2 3d9
[Ar]4s2 3d7
21
Which of the following statements about the atom is false?
Electrons travel definite circular paths around the nucleus
All atomic nuclei are positively charged.
All the mass (protons and neutrons) is located in the nucleus.
Each atom has a tiny, dense nucleus at its center.
22
What is an electron configuration?
Small specific amounts of energy
The arrangement of electrons in the orbitals of an atom
When electrons occupy equal energy orbitals
When each electron occupies lowest energy orbital available
23
Where are electrons located in an atom according to the quantum model of the atom?
I have no idea!
paired with neutrons
traveling in orbits outside the nucleus
traveling in orbitals outside the nucleus
24
Calculate the frequency of a photon of microwave radiation whose energy is 3.20 x 10
-16
J.
4.83 x 1017 Hz
2.12 x 1019 Hz
4.83 x 10-51 Hz
2.07 x 10-18 Hz
25
Air is an example of?
A heterogeneous mixture
A homogenous mixture (solution)
An element
A compound
26
Are you ready for the exam?
Ready as I'll ever be!
I am passing this exam with flying colors!
HELP!!!!!!!!!!
What is Chemistry again?!?!
27
Heat radiation, also known as ___________ ___________, cannot be seen by your eyes but can be felt by your skin.
visible light waves
gamma waves
radio waves
infrared waves
28
Which item represents Thomson's mental image of an atom?
a brownie
a chocolate-chip cookie
a cherry
a marble
29
A compound is represented by its ________.
atomic number
number of protons
chemical formula
number of atoms
30
Sea water is an example of?
A compound
A homogenous mixture
An element
A heterogeneous mixture
31
What is a photon?
a particle of light that carries a quantum of energy
a particle of light
an excited electron
a quantum of energy
32
A material made of combined substances that each retain their own properties is called?
A compound
An element
A mixture
Gorskium
33
Convert 56 kg to grams.
0.0056 g
5.6 g
56,000g
56 g
34
Calculate the energy of a photon of green light whose frequency is 5.80 x 10
14
Hz.
8.75 x 1047 J
3.85 x 10-19 J
1.14 x 10-48 J
3.85 x 1019 J
35
What subatomic particles are located in the nucleus of an atom?
neutrons
electrons
protons and neutrons
protons, neutrons, and electrons
36
A single proton has what electrical charge?
no charge
positive charge
negative charge
37
What type of electromagnetic radiation has the second-shortest wavelength?
x-ray
radio
microwave
gamma
38
Which of the following is an example of an element?
A, B, and C
A and B
A
C
39
In a _______ mixture, each substance can be easily distinguished.
heterogeneous
homogenous
40
Which particles have almost the same mass?
electron and neutron
proton and electron
all three particles
proton and neutron
41
What is the BEST unit to measure the length of a car?
centimeters
millimeters
kilometers
meters
42
Which of the following found that atoms have a dense positive core called nucleus?
Rutherford
Dalton
Aristotle
Thomson
43
Calculate the wavelength of a yellow light emitted if the frequency is 5.10 x 10
14
Hz.
1.53 x 1023 m
5.88 x 107 m
1.70 x 106 m
5.88 x 10-7 m
44
What was the name of the Rutherford Experiment? element?
Gold Foil
Titanium Foil
Silver Foil
Tin Foil
45
Most materials we use and encounter daily are ________.
Elements
Mixtures
Compounds
Pure substances
46
What type of relationship is there between electromagnetic wavelength and frequency?
As wavelength increases, frequency also increases.
As wavelength decreases, frequency also decreases.
As wavelength increases, frequency decreases
There is no direct relationship.
47
2 atoms that have the same # of protons but different # of neutrons have what in common?
stability, they are ions
mass number, they are isotopes
atomic number, they are isotopes
half-life, they are ions
48
If a student is exactly 17 years old, how many minutes does that equal?
Huh?????? I fell asleep.....zzzzzz
3.7 x 10 5
5.36 x 10 8
8.93 x 10 6
49
What are the three subatomic particles found in an atom?
protons, neutrinos, and ions
protium, deuterium, and tritium
protons, neutrons, and electrons
protons, neutrons, and ions
50
How are atoms of two different elements different?
They have different sizes and shapes.
They are made of different subatomic particles.
They look and feel different.
They have different numbers of protons and electron energies
