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American Association of Chemistry Teachers |1-395 Name: ______________________ Flame Tests - “Rainbow Demonstration”
Data Table –
Sample Data –
Student Observations May Vary
*
Compound Name Formula Metal Color Wavelength (nm) Frequency (THz) Barium Chloride
BaCl
2 Ba Yellow-green 550 Calcium Chloride CaCl
2 Ca Orange-red 620
Copper II
Chloride CuCl
2 Cu Green-blue 500 Lithium Chloride LiCl Li Red 700 Potassium Chloride KCl K Lavender-pink 750 Sodium Chloride NaCl Na Orange 480 Strontium Chloride SrCl
2 Sr Dark red 420 UNKNOWN #1 CuCl
2 Cu Green-blue 500 UNKNOWN #2 SrCl
2 Sr Dark red 420 Post Lab Calculations and Questions 1.
Identify the two unknown metals based on the color of light they emitted: a.
Unknown 1 –
Copper II Chloride b.
Unknown 2 –
Strontium Chloride 2.
Convert the wavelength of the following metals to meters (1nm = 1x10
-9
m). Then calculate the frequency of the light emitted and convert to THz (1THz = 1x10
12
Hz):
American Association of Chemistry Teachers |1-395 3.
Convert the frequency of the following metals to Hz. Then calculate the wavelength of the light emitted, converting to nm: 4.
When a glass rod is heated, a yellow-green flame is observed around the point where it is heated. What does the yellow flame indicate might be present in the glass? Barium 550nm 1x10
-9
m =5.5x10
-7
m
= 3.0x10
8
m 5.5x10
14
Hz
1THz = 550THz 1nm s 5.5x10
-7
m 1x10
12
Hz Calcium 620nm 1x10
-9
m =6.2x10
-7
m
= 3.0x10
8
m 4.8x10
14
Hz
1THz = 480THz 1nm s 6.2x10
-7
m 1x10
12
Hz Copper 500nm 1x10
-9
m =5.0x10
-7
m
= 3.0x10
8
m 6.0x10
14
Hz
1THz = 600THz 1nm s 5.0x10
-7
m 1x10
12
Hz Lithium 700nm 1x10
-9
m =7.0x10
-7
m
= 3.0x10
8
m 4.3x10
14
Hz
1THz = 430THz 1nm s 7.0x10
-7
m 1x10
12
Hz Unknown 1 500nm 1x10
-9
m =5.0x10
-7
m
= 3.0x10
8
m 6.0x10
14
Hz
1THz = 600THz 1nm s 5.0x10
-7
m 1x10
12
Hz Potassium 750THz 1x10
12
Hz =7.5x10
14
Hz
= 3.0x10
8
m s 4.0x10
-7
m 1nm = 400nm 1THz s 7.5x10
14
1x10
-9
m Sodium 480THz 1x10
12
Hz =4.8x10
14
Hz
= 3.0x10
8
m s 6.3x10
-7
m 1nm = 630nm 1THz s 4.8x10
14
1x10
-9
m Strontium 420THz 1x10
12
Hz =4.2x10
14
Hz
= 3.0x10
8
m s 7.1x10
-7
m 1nm = 710nm 1THz s 4.2x10
14
1x10
-9
m Unknown 2 420THz 1x10
12
Hz =4.2x10
14
Hz
= 3.0x10
8
m s 7.1x10
-7
m 1nm = 710nm 1THz s 4.2x10
14
1x10
-9
m
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O 3
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Write correct ionic formulas for the following light emitting compounds by entering the number for the
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Arial
16
BIUA
3
4
8.
The explosive metal in period 3, group 1.
9.
The poisonous yellow halogen in period 3.
A soft orange-colored transition metal with 29
10.
protons in period 4.
11. The metalloid in period 3, family 14.
This belongs to the same period as "In" and
12.
the same group as Arsenic.
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O ATOMS, IONS AND MOLECULES
Counting protons and electrons in atoms and atomic ions
Fill in the missing information:
symbol
atom or ion?
number of number of
check all that apply
protons
electrons
O neutral atom
V cation
anion
21
20
neutral atom
O cation
O anion
14
Te
O neutral atom
cation
V anion
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estion 9 of 19
Identify these elements based on their locations in the periodic table. Give the symbol, not the name.
period 6, group 2 (2A)
period 5, group 11 (1B)
period 4, group 16 (6A)
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9.
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Part A
Place the following elements in order of decreasing atomic size: silicon, nitrogen, helium, potassium, magnesium, and carbon.
Rank from largest to smallest. To rank items as equivalent, overlap them.
Reset Help
K
Mg SiCN He
Largest
Smallest
O The correct ranking cannot be determined.
37°F Mostly cloudy
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101 Chem101
Identify the region o x
b My Questions | bart X
CHEM 111-Ch 3 Flas X
+
1
18
Update :
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VIIIA
app.101edu.co
1A
8A
Periodic Table of the Elements
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Apps
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P MyLabsPlus | Pear...
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Blcackboard
Reading List
H
Не
>>
2
13
IIIA
ЗА
14
15
16
17
IIA
IVA
VA
VIA
VIIA
Hydrogen
1.008
Atomic
Number
Helium
4.003
Valence
2A
4A
6A
5,-3,-3 8
5A
7A
4
5
+4,+3,+2,+1
-110
+1
+2
+3
3
7
Symbol
4,-3
-2,-1
Question 18 of 50
Submit
Li
Ве
F
Ne
Lithium
6.941
Beryllium
9.012
Carbon
Oxygen
15.999
Boron
Nitrogen
14.007
Fluorine
18.998
Neon
20.180
Name
Atomic Mass
+4,-4 15 *5,*3,-3 16*6,+4,+2,-217*7.+5,+3,1 18
+1
+2
13
+3
11
12
14
Na Mg
AI
Si
ci| Ar
3
IIIB
ЗВ
4
IVB
4B
6
VIB
6B
7
VIIB
7B
8
10
Identify the region of the electromagnetic spectrum where the wavelength
VB
5B
VI
8
11
IB
1B
12
IB
2B
Magnesium
24.305
Silicon
28.086
Sulfur
32.066
Chlorine
35.453
Argon
39.948…
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Across the same period, the metallic property of an atom _________ as you go from right to left of the periodic table (decreasing atomic number).
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Use the spectroscopy interactive to label the spectra.
hydrogen
sodium
helium
4
mercury
Sun
Answer Bank
lightbulb
neon
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MODULE 6
A STUDENT ACTIVITY
MAKING AN IMAGINARY PERIODIC CHART
INTRODUCTION
The following 26 elements were discovered in another far-away galaxy. They
are symbolically represented by the letters of our alphabet and are listed in
the order of their discovery. The intrepid explorers were able to determine
the atomic masses of the elements and to group them partially into families
of elements.
PURPOSE
• To design your own periodic chart.
DATA OBTAINED
BY THE EXPLORERS
The Atomic Masses of the Elements in the Far-Away Galaxy
A=45, B=47, C= 59, D=1, E=3, F= 13, G= 25, H= 15, I= 5, J= 7,
K= 17, L= 49, M= 39, N= 21, O= 19, P= 9, Q= 11, R= 29, S= 50,
T= 62, U= 63, V=53, W= 43, X= 33, Y=23, Z= 35
The Groups/Families of the Elements
Active Gases: GTDL
Liquids: S M E U H
Metallic Solids: I K V
I.
I.
III.
IV.
Transition Solids: JOR W
Nonmetallic Solids: X P
Noble Gases: Q ZCY B
V.
VI.
Not yet classified into groups: F AN
PROCEDURE
1. Using data obtained by the explorers, try to arrange the…
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1 Elements in Group 8A are known as the ________.
Group of answer choices
noble gases
halogens
chalcogens
alkali metals
alkaline earth metals
2
Which species has 18 electrons?
Group of answer choices
45Sc3+
39K
35Cl
32S2-
27Al3+
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Counting protons and electrons in atoms and atomic ions
Fill in the missing information:
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check all that apply
symbol
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O neutral atom
O cation
O anion
12
10
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O cation
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48
Ge
O neutral atom
O cation
M anion
Explanation
Check
II
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What evidence is there that the colors observed in the flame tests are due to the metals, and not the nonmetals in the compounds tested?
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Identify the highlighted element in the periodic table and give its:
[1] element name and symbol;
[2] group number;
[3] period;
[4] classification (i.e., main group element, transition metal, or inner transition metal).
Element name, (symbol)
Group number
(select)
Period
Classification
(select)
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Cel PrNd Prm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
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Using only the periodic table arrange the following elements in order of increasing atomic radius:
radon, helium, neon, argon
Smallest
Largest
Please answer this question according to the general rules you have learned regarding periodic trends.
DO NOT base your answer on tabulated values since exceptions may occur.
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Answer the following question by matching the numbers with the descriptions.
Numbers may be used more than once. Not all the numbers will be used.
1. 1
2. 2
3. 3
4.
4
5. 5
The number of orbitals in
6. 6
a 4d subshell or sublevel
7. 7
3
F7
F3
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14
total number of electrons for n =
3:
Incorrect
150
SEP
12
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Give answer using 1 decimal place.
Type your numeric answer and submit
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uestion 10
What is the phenomenon that occurs when excited gaseous elements emit only a few colored lines?
line spectrum
photoelectric effect
O photoelectric effect
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they?
6. Which element has the longest name? Which element has
the shortest name?
7. How many elements have a name ending in the suffix -ium
&There are only FIVE places on the Periodic Table where pair
of consecutive elements have the same SECOND Iletter in
16-
their symbol. What are these five pairs?
Which GROUP of elements has the suffix of -ine?
D. What is the only element whose Average Atomic Mass is
very close to its Atomic Number?
11. What element's name has another element's name founc
within it? There are multiple situations-give at least one
acer
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select all sub levels designations that are considered legitimate
5p
4s
2f
1p
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Chemistry Unit 4_the Periodic Table(Fall2020) / 2 of 30
An atom has two valence electrons, but four shells. This element is a member of which group or family?
O A. halogen
B. noble gas
C. alkaline earth metal
D. alkali metal
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Sodium light is easy to filter because it only emits light at a specific wavelength. Would any of the other metals you tested also be easy to filter? Why or why not?
Metals tested: potassium chloride, sodium chloride, lithium chloride, copper chloride.
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A
surrounds all moving charged particles.
O a
O b
magnet
electric current
magnetic field
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It takes 242. kJ/mol to break a chlorine-chlorine single bond. Calculate the maximum wavelength of light for which a chlorine-chlorine single bond could be
broken by absorbing a single photon.
Round your answer to 3 significant digits.
0
#
nm
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Select the answer choice, composed of both ions and atoms, ranked correctly from smallest to largest size
according to ionic and atomic radius.
Ca", Ca, F, F
F,Ca", F, Ca
F, Ca, F, Ca"
F, F, Ca", Ca
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II Review | Constants | Periodic Table
• Part A
The speed of sound in air is 344 m/s at room temperature. The lowest frequency of a cello is 65 s and the highest frequency of
a piccolo is 1.5 x 10s Find the difference in wavelength between these two sounds
Express your answer using two significant figures.
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Atoms are mostly empty space.
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Group the elements into pairs that would most likely exhibit similar chemical properties.
It does not matter which pair of elements is pair 1, pair 2, or pair 3, so long as the correct elements are paired.
Pair 1
Pair 2
Pair 3
Answer Bank
Ne
Kr
Se
Si
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Calculate the frequency (in s) of photons that have an energy of 89.11 kJ/mol.
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Write the full electronic configuration for lead (Pb).
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electronic configuration:
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- PBS LearningMedia battle of gettysburg... Sign in Discovery.. Student - LufkinRdMS - Periodic Table Scavenger Hunt D Insert Format Tools Add-ons Help Last edit was yesterday at 2:39 PM 100% - Normal text Arial 16 BIUA 3 4 8. The explosive metal in period 3, group 1. 9. The poisonous yellow halogen in period 3. A soft orange-colored transition metal with 29 10. protons in period 4. 11. The metalloid in period 3, family 14. This belongs to the same period as "In" and 12. the same group as Arsenic.arrow_forwardChrome File Edit View History Bookmarks Profiles Tab Window Help Purple/Black Iridescent - KPM X wilmington postal code - Goo X Dealers - Ni A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IvdWKW_BBZZIE O ATOMS, IONS AND MOLECULES Counting protons and electrons in atoms and atomic ions Fill in the missing information: symbol atom or ion? number of number of check all that apply protons electrons O neutral atom V cation anion 21 20 neutral atom O cation O anion 14 Te O neutral atom cation V anionarrow_forwardFignment Score: 0% O Resources Give Up? O Hint Check Answer estion 9 of 19 Identify these elements based on their locations in the periodic table. Give the symbol, not the name. period 6, group 2 (2A) period 5, group 11 (1B) period 4, group 16 (6A) 10 12 + prt sc トト」 delete home end pg up & 7 8 10 num backspace %3D lock { Y 7 8. 9.arrow_forward
- Part A Place the following elements in order of decreasing atomic size: silicon, nitrogen, helium, potassium, magnesium, and carbon. Rank from largest to smallest. To rank items as equivalent, overlap them. Reset Help K Mg SiCN He Largest Smallest O The correct ranking cannot be determined. 37°F Mostly cloudy F7 F8 F9 F10 F11 F12 PrtSc Pause Ins Del A Scr Lk SysRq Break & + Backspacearrow_forwardChrome File Edit View History Bookmarks Profiles Tab Window Help 31% Fri 10:35 PM sciencenotes.org 101 Chem101 Identify the region o x b My Questions | bart X CHEM 111-Ch 3 Flas X + 1 18 Update : IA VIIIA app.101edu.co 1A 8A Periodic Table of the Elements -1, +1 Apps M Gmail" YouTube Translate P MyLabsPlus | Pear... TE MYTCC Blcackboard Reading List H Не >> 2 13 IIIA ЗА 14 15 16 17 IIA IVA VA VIA VIIA Hydrogen 1.008 Atomic Number Helium 4.003 Valence 2A 4A 6A 5,-3,-3 8 5A 7A 4 5 +4,+3,+2,+1 -110 +1 +2 +3 3 7 Symbol 4,-3 -2,-1 Question 18 of 50 Submit Li Ве F Ne Lithium 6.941 Beryllium 9.012 Carbon Oxygen 15.999 Boron Nitrogen 14.007 Fluorine 18.998 Neon 20.180 Name Atomic Mass +4,-4 15 *5,*3,-3 16*6,+4,+2,-217*7.+5,+3,1 18 +1 +2 13 +3 11 12 14 Na Mg AI Si ci| Ar 3 IIIB ЗВ 4 IVB 4B 6 VIB 6B 7 VIIB 7B 8 10 Identify the region of the electromagnetic spectrum where the wavelength VB 5B VI 8 11 IB 1B 12 IB 2B Magnesium 24.305 Silicon 28.086 Sulfur 32.066 Chlorine 35.453 Argon 39.948…arrow_forwardAcross the same period, the metallic property of an atom _________ as you go from right to left of the periodic table (decreasing atomic number).arrow_forward
- Use the spectroscopy interactive to label the spectra. hydrogen sodium helium 4 mercury Sun Answer Bank lightbulb neonarrow_forwardMODULE 6 A STUDENT ACTIVITY MAKING AN IMAGINARY PERIODIC CHART INTRODUCTION The following 26 elements were discovered in another far-away galaxy. They are symbolically represented by the letters of our alphabet and are listed in the order of their discovery. The intrepid explorers were able to determine the atomic masses of the elements and to group them partially into families of elements. PURPOSE • To design your own periodic chart. DATA OBTAINED BY THE EXPLORERS The Atomic Masses of the Elements in the Far-Away Galaxy A=45, B=47, C= 59, D=1, E=3, F= 13, G= 25, H= 15, I= 5, J= 7, K= 17, L= 49, M= 39, N= 21, O= 19, P= 9, Q= 11, R= 29, S= 50, T= 62, U= 63, V=53, W= 43, X= 33, Y=23, Z= 35 The Groups/Families of the Elements Active Gases: GTDL Liquids: S M E U H Metallic Solids: I K V I. I. III. IV. Transition Solids: JOR W Nonmetallic Solids: X P Noble Gases: Q ZCY B V. VI. Not yet classified into groups: F AN PROCEDURE 1. Using data obtained by the explorers, try to arrange the…arrow_forward1 Elements in Group 8A are known as the ________. Group of answer choices noble gases halogens chalcogens alkali metals alkaline earth metals 2 Which species has 18 electrons? Group of answer choices 45Sc3+ 39K 35Cl 32S2- 27Al3+arrow_forward
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