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Chapter 2 Review Flashcards | StudBud
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Chapter 2 Review
Chapter 2 Review
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Atom, Molecules, and Ions
Flashcards
61 cards
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Questions
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Answers
1
Write the chemical formula for iron (III) oxide
FeO
Fe3O2
Fe2O3
FeO2
2
There are 118 unique elements, seemingly infinite number compounds, but only ____ types of charge.
4
1
2
3
3
What is the atomic mass of pure hydrogen gas? hint: HONClBrIF
1 amu
2.02 amu
1.01 amu
4 amu
4
Which of the following forms a 2+ charge in ionic compounds?
Be
Mg
Ca
All form +2 charges
5
Which of the following would you expect to be the least effective at conducting electricity (non metal!) ?
Cu
Ti
Au
Cl
6
Which of the following has 10 neutrons?
Neon-20
Carbon-13
H-3
Nitrogen-28
7
How many neutrons are found in the nucleus of the most common H isotope, Hydrogen-1?
3
2
0
1
8
Which of the following would you expect to be a poor conductor?
N2
Au
Cu
Zn
9
What does atomic theory state?
Atoms can be rearranged to form new elements.
Atoms are indivisible spheres of mass.
Atoms make up compounds.
All matter is made up of tiny particles called atoms.
10
What is the charge of chlorine in NaCl?
-2
+1
-2
-1
11
Electromagnetism is stronger (10^42 times) than gravity.
False
True
12
Which subatomic particle governs chemical reactivity and just about every concept addressed in chemistry?
n/a
neutron
proton
electron
13
Which of the following would be most likely to form an anion?
Au
Ca
I
Al
14
Which of the following is a metalloid?
Zn
S
Si
O
15
Name the following compound: CuO
Copper (I) Oxide
Copper monoxide
Copper (II) Oxide
Copper oxide
16
The concept of atoms is traced back through historical record to....who also brought us democracy, geometry and Olympics
Aztecs
Native Americans`
Greeks
Mayans
17
In the interactive exercise, all of the following are proof that EM is stronger than gravity except?
bending water with static
the observation that a magnet stays firmly stuck to the wall
the cloud chamber and radioactivity being visualized
being able to lift a partner's hair with a charged balloon
18
The conventionally assigned (+) charge in electrostatics is routed in the proton, and the (-), the electron
True
False
19
Which law is demonstrated in this model?
law of constant composition
law of multiple proportion
law of conservation of mass
law of definite proportion
20
Which of the following elements would you expect to have a charge of 2+ in ionic compounds?
Mg
Cf
S
Na
21
Which of the following from +1 charges by losing 1 electron?
Al
Na
Ca
F
22
Properties of matter are developed from the properties and behavior of subatomic particles. Which regards nuclear stab?
proton
electron
N/A
neutron
23
Groups on the table, like the halogens....
have very similar chemical properties
have the same number of electrons
have the same atomic number
are all solids at room temp
24
Name this dish
Pad Thai
Chicken Biryani
Lo Mein
Pad See Ew
25
Which of the following is likely to form a cation by vacating electrons from an outer orbital?
S
O
I
Be
26
Which subatomic particle governs the identity of chemical elements?
the neutron
the proton
the electron
N/A
27
What of the following describes the consistent purity of substances?
Law of Constant Composition
Law of Conservation of Energy
Law of Conservation of Energy
Law of Conservation of Mass
28
Based on its average atomic mass, which would you suspect is the most abundant isotope of sodium?
Na - 25
Na - 23
Na - 24
Na - 22
29
What is the charge of Cobalt in cobalt (III) oxide
3-
2-
3+
2+
30
In a pure element, the charge of the electrons is neutralized by the
protons
other electrons
neutrons
n/a
31
Name this dish.
Teriyaki Chicken
Chicken Alfredo
Butter Chicken
Chicken Noodle Soup
32
How many significant figures are represented in 0.1001
2
1
3
4
33
Which of the following is a molecular compound?
H2
NaCl
NaNO3
AgCl
34
Name the following: CaCl2
monocalcium chloride
calcium dichloride
calcium (II) chloride
calcium chloride
35
Which of the following finds stability by accepting 1 electron?
O
P
S
F
36
CuO, has a mass ratio of 3.97:1, based on law multiple proportions, you would expect the mass ratio of Cu2O to be
1.5:1
4.5:1
7.94:1
2.5:1
37
Which of the following laws best describes the fact that atoms are not "lost" in normal chem. reactions?
law of multiple proportion
law of conservation of mass
law of def. proportion
law of constant composition
38
Which of the following was discovered by Rutherford?
Neutron
Mass of electron
Charge of electron
Nucleus
39
Which of the following is a molecular substance?
NaCl
O2
CaCl2
AgI
40
What is the atomic number of gold?
80
79
14
180
41
In Thomson's famous experiment, the path of the electron was ___________ from the positive end of the electric field
repulsed
unaffected
deflected
attracted
42
Which of the following would be considered applications of isotopes?
cancer treatment
medical imaging
all are applications
radiometric dating like uranium dating
43
Which element has 17 protons?
He
Ne
Cl
O
44
The first appearance of atoms as a concept is traced through historical records to.....
Democritus, a Greek philosopher
Aristotle
Rutherford
John Dalton
45
The fact that pure MgO is always in a mass ratio of 1.52 : 1 in respects to the elements involved is a demonstration of
Law of Constant Composition
Law of Multiple Proportion
Law of Conservation of Matter
Law Definite Proportion
46
Which of the following forms -2 charges in ionic compounds?
I
S
Cl
F
47
Which of the following is always found as a homonuclear diatomic element in its pure state? (HONClBrIF!)
S
C
O
He
48
Which of the following would NOT abide by law of constant comp?
NaCl
Pure Gold (Au)
Glucose (C6H12O6)
Air
49
I am ready for the test.
False
True
50
Thomson made a landmark discovery in chemistry shattering Dalton's posulates, what was this land mark disovery?
law of conservation of mass
dense central nucleus
first identification of isotopes
first subatomic particle
51
Name this food item
Brioche
Garlic Bread
Tortilla
Naan
52
Which force is dominant in atomic structure and chemical bonding?
Electromagnetism
Strong Nuclear
Gravity
Weak Nuclear
53
The route of the negative charge in atoms is from a lepton particle on the standard model known as the.....
electron
n/a
neutron
proton
54
The mass ratio (C:O) is 1:1.33. It would be predicted that the mass ratio of CO2 according to Law of mult. prop....
1:2.67
1:3
1:2
1:1.33
55
All of the following are true regarding elements that are isotopes except.
They have the same number of protons
They have the same atomic number
Their chemical properites are somewhat similar
They have the same mass #
56
Which of the following is best discussed and analyzed as a molecule, rather than a formula unit of a solid?
MgO
NaCl
AgCl
CH4
57
All of the following laws were used to support atomic theory except?
Law of Definite Proportion
Law of Conservation of Energy
Law of Multiple Proporiton
Law of Conservation of Mass
58
Atomic nuclei hold on to electric charges through the force of gravity
True
False
59
Which of the following was NOT described in Dalton's postulates?
masses of the same elements can differ from one another based on neutrons
atoms are indivisible
matter combines in fixed ratios based on mass
matter is made of atoms
60
Approximately, what is the percent comp. by mass of hydrogen in HCl?
5%
10%
50%
3%
61
Thomson reasoned that the charge of the cathode ray was made of negative charges was because
n/a the cathode ray was not altered in its course
it was pulled towards the negative end of the electric field
it was pulled towards the positive end of the electric field
it was delected more than an atom would be predicted
