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Chemistry Midterm Exam Review Flashcards | StudBud
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Chemistry Midterm Exam Review
Chemistry Midterm Exam Review
28 terms
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#review for #chemistry #midtermexam
Flashcards
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Questions
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Answers
1
Which of the following elements is most similar to chlorine?
Br
S
Ar
He
2
Which of the particles of a neutral atom has the least mass?
they all have the same mass
neutron
proton
electron
3
The chemical symbols for Hydrogen, Oxygen, Nitrogen and Potassium (in order) spell what?
HOxNK
HONP
HeONK
HONK
4
Argon (Ar #18) is classified as a
none of these
metal
metalloid
nonmetal
5
Which is the correct measurement for the location marked by the arrow?
30.045
30.5
30.45
34.5
6
When electrons are shared unequally, chemists characterize these types of bonds as __.
ionic
covalent
metallic
London dispersion
7
A quantitive observation includes ______.
scent
numbers
colors
texture
8
What is the formula for cobalt(II) chloride?
CoCl2
CoCl
Co2Cl
CO2Cl2
9
Water is called a good solvent because of polar molecules. What makes a water molecule a polar?
They are rod-shaped.
They have a negative charge at cold temperatures.
They are always neutral.
They have a + charge on one end and a - charge on the other.
10
The fundamental particle of a chemical element according to Dalton's theory is the
mole
molecule
atom
electron
11
Which is a property of a proton?
atomic mass equal to 1
same mass as an electron
same charge as an electron
no electrical charge
12
Which chemical names make the work BaCON with their symbols?
Barium,Carbon, Oxygen, Nitrogen
Boron, Calcium,Oxygen, Nitrogen
Boron, Carbon, Oxygen, Nitrogen
Barium, Cobalt, Nitrogen
13
The state of matter for an object that has neither definite shape nor definite volume is a
solid
gas
liquid
non matter
14
A physical property for zinc would be that its color is silver
False
True
15
Which of the following is a metalloid?
gallium (atomic no. 31)
sulfur (atomic no. 16)
Antimony (atomic # 51)
iodine (atomic no. 53)
16
What kind of bond forms when a carbon atom
shares
electrons with four hydrogen atoms.
covalent
London dispersion
metallic
ionic
17
A measurement of 5.685 × 10-6 is equivalent to 0.0000005685.
True
What are you talking about?
I have no idea.
False
18
Plutonium (Pu #94) is classified as a
metalloid
metal
none of these
nonmetal
19
When electrons are
shared unequally
, chemists characterize these types of bonds as
selfish
ionic
nonpolar covalent
polar covalent
20
Which is correct formula for the covalent compound Carbon
MON
oxide
CO2
C2O2
CO
C2O
21
How many significant digits are in the value 0.0050340?
8
5
6
7
22
Metals typically have ______________ electronegativity values.
low
no
negative
high
23
Calcium(Ca #20) is classified as a
metalloid
none of these
nonmetal
metal
24
The number 6 refers to the element's
atomic mass
number of isotopes
number of electron levels
atomic number
25
Determine which of the following elements forms the same ion charge as Nitrogen
Aluminum (Al)
Carbon (C)
Oxygen (O)
Phosphorus (P)
26
A chemical property of Hydrogen is that it is flammable.
False
True
27
Filtration using the equipment shown can be used to separate which materials?
A solution of sugar in water
A mixture of oxygen and water
A mixture of salt and pepper
A mixture of pepper and water
28
Arsenic (As #33) is classified as a
metal
metalloid
none of these
nonmetal
