The document contains worked solutions to multiple choice questions about gases, atomic structure, and physical periodicity. For the first question, the correct diagram showing the behavior of an ideal gas at constant temperature is a linear relationship between pressure (p) and volume (V) on the axes. For the second question, the identity of elements with increasing ionization energies that follows the trend across a period is option A. For the third question, the number of moles of gas molecules in a second sample is calculated using the ideal gas law. For the fifth question, Dalton's atomic theory idea that is known to be correct is that atoms of the same element are identical in mass.
Avogadro's law (sometimes referred to as Avogadro's hypothesis or Avogadro's principle) or Avogadro-Ampère's hypothesis is an experimental gas law relating the volume of a gas to the amount of substance of gas present.[1] The law is a specific case of the ideal gas law. A modern statement is:
Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."
Avogadro's law (sometimes referred to as Avogadro's hypothesis or Avogadro's principle) or Avogadro-Ampère's hypothesis is an experimental gas law relating the volume of a gas to the amount of substance of gas present.[1] The law is a specific case of the ideal gas law. A modern statement is:
Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."
Attacking the TEKS: Focus on Atomic Theory presented by Jane Smith, ACT2 2010
This session will expose you to the new TEKS and College Readiness Standards. Ideas for sequencing and planning the unit will be shared along with tips for appropriate demos, labs, and assessments. The intended audience is for teachers with 3 or less years of experience or anyone who wants to delve deeper into the new standards.
Attacking the TEKS: Focus on Atomic Theory presented by Jane Smith, ACT2 2010
This session will expose you to the new TEKS and College Readiness Standards. Ideas for sequencing and planning the unit will be shared along with tips for appropriate demos, labs, and assessments. The intended audience is for teachers with 3 or less years of experience or anyone who wants to delve deeper into the new standards.
ch 3 classification of elements and periodicity in properties.pdfLUXMIKANTGIRI
In chapter there is a Theory by which how the bonding and the structure of the molecules can change how they are actually content and make a knee compounds what are the laws basically followed during this concept
Measurement
of
the
angle
θ
For
better
understanding
I
am
showing
you
a
different
particle
track
diagram
bellow.
Where
at
point
C
particle
𝜋! 𝑎𝑛𝑑 Σ!
are
created
and
the
Σ!
decays
into
𝜋∓ 𝑎𝑛𝑑 K!
particles
The
angle
θ
between
the
π−
and
Σ−
momentum
vectors
can
be
determined
by
drawing
tangents
to
the
π−
and
Σ−
tracks
at
the
point
of
the
Σ−
decay.
We
can
then
measure
the
angle
between
the
tangents
using
a
protractor.
Alternative
method
which
does
not
require
a
protractor
is
also
possible.
Let
AC
and
BC
be
the
tangents
to
the
π−
and
Σ−
tracks
respectively.
Drop
a
perpendicular
(AB)
and
measure
the
distances
AB
and
BC.
The
ratio
AB/BC
gives
the
tangent
of
the
angle180◦−θ.
It
should
be
noted
that
only
some
of
the
time
will
the
angle
θ
exceed
90◦
as
shown
here.
Determining
the
uncertainty
of
Measurements
In
part
B,
It
is
asked
to
estimate
the
uncertainty
of
your
measurements
of
𝜃
and
r.
Uncertainty
of
measurement
is
the
doubt
that
exists
about
the
result
of
any
measurement.
You
might
think
that
well-‐made
rulers,
clocks
and
thermometers
should
be
trustworthy,
and
give
the
right
answers.
But
for
every
measurement
-‐
even
the
most
careful
-‐
there
is
always
a
margin
of
doubt.
It
is
important
not
to
confuse
the
terms
‘error’
and
‘uncertainty’.
Error
is
the
difference
between
the
measured
value
and
the
‘true
value’
of
the
thing
being
measured.
Uncertainty
is
a
quantification
of
the
doubt
about
the
measurement
result
Since
there
is
always
a
margin
of
doubt
about
any
measurement,
we
need
to
ask
‘How
big
is
the
margin?’
and
‘How
bad
is
the
doubt?’
Thus,
two
numbers
are
really
needed
in
order
to
quantify
an
uncertainty.
One
is
the
width
of
the
margin,
or
interval.
The
other
is
a
confidence
level,
and
states
how
sure
we
are
that
the
‘true
value’
is
within
that
margin.
You
can
increase
the
amount
of
information
you
get
from
your
measurements
by
taking
a
number
of
readings
and
carrying
out
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Industry expert Scott Sehlhorst will:
• Introduce a taxonomy for user goals with real world examples
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Answers To Timed Assignment For Gases, Atomic Structure And Physical Periodicity
1. Answers to Timed Assignment on Gases, Atomic Structure and Physical Periodicity Section A
2. 1. Which one of the following diagrams correctly describes the behaviour of a fixed mass of ideal gas? (T is constant.) A B C D pv p pv p pv p pv p
3. 1. Which one of the following diagrams correctly describes the behaviour of a fixed mass of ideal gas? (T is constant.) All four graphs have the same axes.
4. 1. Which one of the following diagrams correctly describes the behaviour of a fixed mass of ideal gas? (T is constant.) All four graphs have the same axes. y axis - pV x axis - p
5. 1. Which one of the following diagrams correctly describes the behaviour of a fixed mass of ideal gas? (T is constant.) All four graphs have the same axes. y axis - pV x axis - p p V = n R T y = m
6. 1. Which one of the following diagrams correctly describes the behaviour of a fixed mass of ideal gas? (T is constant.) All four graphs have the same axes. y axis - pV x axis - p p V = n R T y = m pV p
7. 1. Which one of the following diagrams correctly describes the behaviour of a fixed mass of ideal gas? (T is constant.) A B C D pv p pv p pv p pv p
8. 1. Which one of the following diagrams correctly describes the behaviour of a fixed mass of ideal gas? (T is constant.) A B C D The answer is C pv p pv p pv p pv p
9. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. Which option correctly represents the identity of Elements 1, 2, 3, 4 and 5? 1 2 3 4 5 A Ti V Cr Mn Fe B Al Si P S Cl C C N O F Ne D P S Cl Ar K 4 1 3 2 5 IE proton number
10. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. 4 1 3 2 5 IE generally increases across the period. IE proton number
11. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. 4 1 3 2 5 IE generally increases across the period. The trend is not followed only at certain points IE proton number
12. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. 4 1 3 2 5 IE generally increases across the period. The trend is not followed only at certain points Element 5 does not follow the trend and is a lot lower than the rest of the elements. IE proton number
13. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. 4 1 3 2 5 IE generally increases across the period. The trend is not followed only at certain points Element 5 does not follow the trend and is a lot lower than the rest of the elements. Element 5 is an element that belongs to a quantum level that is further away. IE proton number
14. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. Which option correctly represents the identity of Elements 1, 2, 3, 4 and 5? 1 2 3 4 5 A Ti V Cr Mn Fe B Al Si P S Cl C C N O F Ne D P S Cl Ar K 4 1 3 2 5 IE proton number
15. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. Which option correctly represents the identity of Elements 1, 2, 3, 4 and 5? 1 2 3 4 5 A Ti V Cr Mn Fe B Al Si P S Cl C C N O F Ne D P S Cl Ar K 4 1 3 2 5 IE proton number
16. 2. The use of the Data Booklet is relevant in this question. The graph shows the first ionisation energy of five elements in order of increasing proton number. Which option correctly represents the identity of Elements 1, 2, 3, 4 and 5? 1 2 3 4 5 A Ti V Cr Mn Fe B Al Si P S Cl C C N O F Ne D P S Cl Ar K 4 1 3 2 5 IE proton number
17. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? A B C D
18. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? p V = n R T
19. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k . Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? p V = n R T Concentration of gas??
20. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k . Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? p V = n R T Concentration of gas?? = concentration of gas
21. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? p V = n R T Concentration of gas?? = concentration of gas =
22. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k . Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? p V = n R T Concentration of gas?? = concentration of gas = = k =
23. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? p V = n R T Concentration of gas?? = concentration of gas = = k = R remains constant in both cases
24. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? R =
25. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? R = In the second scenario 30 V = n R (300)
26. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? R = In the second scenario 30 V = n R (300) =
27. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? R = In the second scenario 30 V = n R (300) = =
28. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? R = In the second scenario 30 V = n R (300) = = =
29. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? A B C D
30. 3. An ideal gas exerts a pressure of 60 Pa when its temperature is 400 K and the concentration of the gas is k. Another sample of the same gas exerts a pressure of 30 Pa when its temperature is 300 K. How many molecules are present in unit volume of this second sample? A B C D
31.
32.
33.
34.
35. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element.
36. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element.
37. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element.
38. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element.
39. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element.
40. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element. 40 Ar 40 Ca
41. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element.
42. 5. The following ideas were those underlying John Dalton’s atomic theory, published in 1803. Which idea is known to be correct? A Atoms are indivisible. B Atoms are very small. C Atoms of an element are identical. D Atoms of one element always differ in mass from those or another element.