What is the most important
scientific achievement for our
world today? Discuss
• The atomic bomb
• Discovery of DNA
• Landing on the moon
• Darwin’s discovery of evolution
• The periodic table
• Other......
Mendeleev’s Periodic
Table
Wednesday 3rd July
Mendeleev’s Periodic
Table
Mendeleev’s Periodic
Table
Learning Objectives
Copy these
down
• Describe how Newlands and
Mendeleev arranged elements.
• Explain how Mendeleev overcame the
problem of undiscovered elements.
In small groups
6 Mins
Arrange the shapes
http://www.online-stopwatch.com/large-stopwatch/
One possible answer....
Number of Sides------->
1
3
4
5
6
8 Mins
On your own
Arrange the following
elements into an order.
Justify your arrangement.
8 Mins
On your own
Arrange the following
elements into an order.
Justify your arrangement.
One possible answer....
Metal
Metal
Non Metal
Floats on Water Sinks in Water
After the video you will be
asked to answer this
question:
Describe how Mendeleev arranged
elements by their properties. (3)
http://www.youtube.com/watch?v=nsbXp64YPRQ
Describe how Mendeleev arranged
elements by their properties. (3)
Keywords:
properties, elements, compounds, atomic
mass
http://www.youtube.com/watch?v=nsbXp64YPRQ
8 Mins
The Challenge
Can you predict the gaps
in the table? Can you
explain how have done
so?
8 Mins
The Challenge
Can you predict the gaps
in the table? Can you
explain how have done
so?
How close were you?
23
Metal
0.97g/cm3
98°C
883°C
Reacts v. quickly with water
Metal
73
5.3g/cm3
938°C
2833°C
4.23g/cm3
80
Non metal
3.10g/cm3
-7.2°C
58.8°C
Reddish brown liquid
How close were you?
HWK
Name:______________
Due Wednesday 10th July
Use a pencil for lines
Use a ruler
Use all the space on the
paper
RTQ: Atomic Mass vs Boiling
Point
Use an accurate scale (xaxis)
Use an accurate scale (yChecklist /10
axis)
Label both axis
Label title
Use x for points not dots
Line through all the points
HWK
Name:______________
Due Wednesday 10th July
Use a pencil for lines
Use a ruler
Use all the space on the
paper
RTQ: Atomic Mass vs Boiling
Point
Use an accurate scale (xaxis)
Use an accurate scale (yChecklist /10
axis)
Label both axis
Label title
Use x for points not dots
Line through all the points
HWK
Name:______________
Due Wednesday 10th July
Use a pencil for lines
Use a ruler
Use all the space on the
paper
RTQ: Atomic Mass vs Boiling
Point
Use an accurate scale (xaxis)
Use an accurate scale (yChecklist /10
axis)
Label both axis
Label title
Use x for points not dots
Line through all the points
HWK
Name:______________
Due Wednesday 10th July
Use a pencil for lines
Use a ruler
Use all the space on the
paper
RTQ: Atomic Mass vs Boiling
Point
Use an accurate scale (xaxis)
Use an accurate scale (yChecklist /10
axis)
Label both axis
Label title
Use x for points not dots
Line through all the points
HWK
Name:______________
Due Wednesday 10th July
Use a pencil for lines
Use a ruler
Use all the space on the
paper
RTQ: Atomic Mass vs Boiling
Point
Use an accurate scale (xaxis)
Use an accurate scale (yChecklist /10
axis)
Label both axis
Label title
Use x for points not dots
Line through all the points
HWK
Name:______________
Due Wednesday 10th July
Use a pencil for lines
Use a ruler
Use all the space on the
paper
RTQ: Atomic Mass vs Boiling
Point
Use an accurate scale (xaxis)
Use an accurate scale (yChecklist /10
axis)
Label both axis
Label title
Use x for points not dots
Line through all the points
Settler
Recall the relative mass and
relative charge of:
• A neutron
• A proton
• An electron
3
minute
s
Settler
Recall the relative mass and
relative charge of:
• A neutron has a relative mass of 1 and
a relative charge of 0.
• A proton has a relative mass of 1 and a
relative charge of +1.
• An electron has a negligible relative
mass (1/1840) and a relative charge of 1.
S
6/6
A
Modern Periodic Table
Modern Periodic
Table
•
ModernDescribe
Periodic the
Table
arrangement of elements
in the modern periodic table
Learning Objectives
• Explain the meaning of atomic number,
mass number and relative atomic mass.
• Use your knowledge of electron shells
to desribe the periodic table.
Periodic Table of Elements
1
Label:
1. label groups
2. label periods
3. shade/colour metals/non metals
4. Add a key
H
1
hydrogen
7
Li
3
lithium
44
He
2
helium
9
11
4
5
Be
B
boron
beryllium
12
6
carbon
23
24
27
28
11
12
13
14
Na Mg
sodium
39
19
K
potassium
Al
magnesium
aluminium
40
45
48
20
21
22
Ca
calcium
Sc
scandium
85.5
88
89
37
38
39
Rb
rubidium
Sr
strontium
Y
yttrium
Ti
titanium
51
23
V
vanadium
32
S
fluorine
35.5
Cl
10Se Br
Ge As
Sn
Sb Te
I
minut
Pb Bi Po At
es
Fl
Lv
silicon
15
16
phosphorous
sulfur
Ne
10
17
neon
40
Ar
18
chlorine
argon
63
65
70
73
75
79
80
84
24
25
26
27
28
29
30
31
32
33
34
35
36
Cr
chromium
Mn Fe
manganese
Co
iron
Ni
cobalt
nickel
Cu
Zn Ga
copper
zinc
gallium
germanium
arsenic
selenium
bromine
Kr
krypton
91
93
96
98
101
103
106.5
108
112.5
115
119
122
128
127
131
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
molybdenum
technetium
Zr
zirconium
Nb Mo
niobium
Tc
Ru Rh
ruthenium
rhodium
184
186
190
192
55
56
71
72
73
74
75
76
77
lutetium
P
oxygen
F
9
59
181
barium
31
O
59
178.5
caesium
nitrogen
8
20
56
175
Lu
N
19
55
137
Ba
Si
7
16
52
133
Cs
C
14
Hf
hafnium
Ta
tantalum
W
tungsten
Re Os
rhenium
osmium
Ir
iridium
Pd
Ag
palladium
silver
Cd
cadmium
In
indium
tin
antimony
tellurium
Xe
iodine
xenon
195
197
201
204
207
209
209
210
222
78
79
80
81
82
83
84
85
86
Pt
Au
platinum
gold
Hg
mercury
Tl
thallium
lead
bismuth
polonium
astatine
Rn
radon
223
226
260
261
262
263
264
265
268
281
281
285
286
289
288
293
294
294
87
88
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
darmstadtium
roentgenium
Fr
francium
Ra
radium
Lr
lawrencium
Rf
rutherfordium
Db
dubnium
Sg
seaborgium
Bh
bohrium
Hs
hassium
Mt
meitnerium
Ds
Rg
Cn Uut
copernicium
ununtrium
Flerovium
Uup
ununpentium
livermorium
Uus Uuo
ununseptium
ununoctium
Periodic Table of Elements
Groups
1
1
2
3
Li
3
Periods
lithium
2
9
Be
atomic number
helium
H
element symbol
1
11
element name
hydrogen
4
5
B
boron
beryllium
12
6
C
carbon
14
7
28
31
11
12
13
14
15
Na Mg
19
K
potassium
Al
magnesium
aluminium
45
48
20
21
22
Ca
calcium
Sc
scandium
85.5
88
89
37
38
39
Rb
rubidium
Sr
strontium
Ti
titanium
Y
23
V
vanadium
16
phosphorous
S
sulfur
fluorine
35.5
40
17
18
Cl
63
65
70
73
75
79
80
84
24
25
26
27
28
29
30
31
32
33
34
35
36
Cr
chromium
Mn Fe
manganese
Co
iron
Ni
cobalt
nickel
Cu
Zn Ga Ge As
copper
zinc
gallium
germanium
arsenic
Se
selenium
Br
103
106.5
108
112.5
115
119
122
128
127
40
41
42
43
44
45
46
47
48
49
50
51
52
53
molybdenum
technetium
Nb Mo
Tc
Ru Rh
ruthenium
rhodium
184
186
190
192
55
56
71
72
73
74
75
76
77
hafnium
tantalum
W
tungsten
Re Os
rhenium
osmium
Ir
iridium
Pd
Ag
palladium
silver
Cd
cadmium
In
Sn Sb
indium
tin
antimony
Te
Kr
bromine
101
Ta
argon
59
98
Hf
Ar
chlorine
96
niobium
neon
59
181
lutetium
32
Ne
10
56
178.5
barium
oxygen
F
9
20
55
175
caesium
O
93
zirconium
Lu
8
19
52
137
Ba
silicon
P
16
91
Zr
yttrium
51
133
Cs
Si
N
nitrogen
27
40
8
He
24
39
7
44
23
sodium
6
2
relative atomic mass
hydrogen
7
5
Key
H
1
4
tellurium
I
krypton
131
Xe
54
iodine
xenon
195
197
201
204
207
209
209
210
222
78
79
80
81
82
83
84
85
86
Pt
Au
platinum
gold
Hg
mercury
Tl
Pb
thallium
lead
Bi
bismuth
Po
polonium
At
Rn
astatine
radon
223
226
260
261
262
263
264
265
268
281
281
285
286
289
288
293
Uup Lv
294
294
87
88
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
darmstadtium
roentgenium
Fr
francium
Ra
radium
Lr
Rf
lawrencium
rutherfordium
Db
dubnium
Sg
seaborgium
Bh
bohrium
Hs
hassium
hydrogen
alkali earth metals
alkali metals
transition metals
Mt
meitnerium
Ds
Rg
non metals
Cn Uut
copernicium
ununtrium
Fl
Flerovium
ununpentium
livermorium
Uus Uuo
ununseptium
ununoctium
halogens
noble gases
http://www.online-stopwatch.com/large-stopwatch/
Using the information in the textbooks if necessary
Chemistry for you chapter 3
1. Atomic number is
..........................................................
It is also known as the ............ number.
4
2. Mass number is
..............................................................
minut
It is also known as the ............ number.
es
3. Relative atomic mass (RAM) is the m___
m___ of an a____ r_______
....................................................
Hand your work to the pupil next to you and mark each others work.
1 mark for each tick (words in bold)
1. Atomic number is
the number of protons in the nucleus of an atom.
.......................................................................
proton
It is also known as the ............ number.
2. Mass number the
is total number of protons and neutrons in the
...........................................................................
nucleus of an atom.
.............................
nucleon
It is also known as the ............ number.
3. Relative atomic mass (RAM) is the m___ m___
ean
ass
of an
a____
r_______
to 1/12 of the mass of an atom of carbon 12.
tom
elative
.............................................................
P
10/10
A
Electron energy levels (Shells)
For neutrally charged atoms
number of electrons =
number of protons
Electrons fill the lower
energy levels first (inner
shells)
The number of electrons that
can fit in each shell is fixed.
2 for the first shell
8 for the second shell
8 for the third shell
(18 for the 4th shell)
Electron energy levels (Shells)
Example:
Lithium
Lithium has an atomic
number of 3.
-this means it has 3
protons.
-this means the atom has
3 electrons.
Electron energy levels (Shells)
+3
We put +3 in the nucleus
to represent the 3 positive
charges from the protons.
Electron energy levels (Shells)
lithium atom
We put +3 in the nucleus to
represent the 3 positive charges
from the protons.
+3
We then add ‘electrons’ (these
can be X of O).
- 2 in the first shell.
- 1 in the second shell.
Electron energy levels (Shells)
lithium atom
Check
The number of X’s must equal
the number in the middle.
Li
We can also just put the element
symbol in the nucleus.
(we do not draw the empty
shells)
TASK: Draw the electron arrangement for sodium in your
books
3
minut
es
Using your atom whiteboards:
Draw the electron
arrangement for
oxygen.
16
O
8
oxygen
Using your atom whiteboards:
oxygen atom
Draw the electron
arrangement for
oxygen.
+8
16
O
8
oxygen
Using your atom whiteboards:
Draw the electron
arrangement for
hydrogen.
Using your atom whiteboards:
hydrogen atom
Draw the electron
arrangement for
hydrogen.
+1
Using your atom whiteboards:
Draw the electron
arrangement for
neon.
Using your atom whiteboards:
neon atom
Draw the electron
arrangement for
neon.
+8
Using your atom whiteboards:
Draw the electron
arrangement for
calcium.
Using your atom whiteboards:
calcium atom
Draw the electron
arrangement for
calcium.
+20
TASK: Draw the electron arrangement for potassium in
your books
3
minut
es
Q1-7
Mini Quiz:
10
minute
s
1. What charge does a neutron have? (1)
2. What is the mass of an electron? (1)
3. What does relative atomic mass mean? (1)
4. What is another name for proton number? (1)
5. How many electrons can fit in the lowest
energy level? (1)
6. Complete the table (3)
Element
Electrons in
1st shell
Electrons in
2nd shell
Electrons in
3rd shell
Electrons in
4th shell
Group in
periodic table
hydrogen
1
0
0
0
1
lithium
2
1
2
0
sodium
magnesium
neon
sulfur
calcium
8
8
0
2
2
7. What is the connection between the number
of outer electrons and the group? (2)
Mini Quiz:
1. A neutron has a charge of 0.
2. An electron has a negligible mass (1/1840).
3. Relative atomic mass is the mass of an atom
relative to the mass of an atom of carbon 12.
4. Atomic number is another name for proton
number.
5. 2 electrons can fit in the lowest energy level
(shell).
Each correct row is worth 1/2 mark
6. Complete the table (3)
Element
Electrons in
1st shell
Electrons in
2nd shell
Electrons in
3rd shell
Electrons in
4th shell
Group in
periodic table
hydrogen
1
0
0
0
1
lithium
2
1
sodium
2
2
8
8
0
1
0
0
2
0
1
1
2
8
8
0
6
calcium
2
8
0
6
2
0
sulfur
2
2
2
2
magnesium
neon
8
7. What is the connection between the number of
outer electrons and the group? (2)
The number of outer electrons determines the group, 7 electrons in the
outer shell would put the atom in group 7. Atoms in the same group
behave similarly.
10/10
SA