2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy...
-
Upload
irene-carpenter -
Category
Documents
-
view
219 -
download
0
Transcript of 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy...
![Page 1: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/1.jpg)
2.2 The periodic table and chemical properties
Pages 48-53
1
By Lester Green Smallwood Academy Gambo
![Page 2: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/2.jpg)
1.16 Describe and explain the role of collecting evidence, finding relationships, and proposing explanations in the development of the periodic table
• See Dmitri Mendeleev page 48• Exercise using elements and periodic table to
identify patterns. Have students list properties of an element on a flash card and place on cupboards doors in classroom.
• Properties: atomic number, atomic mass, name and symbol.
2
![Page 3: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/3.jpg)
1.16.1 Identify the periodic table as a listing of all known elements.• All known and yet to be discovered elements are
listed on the Periodic table.• See website www.nclark.net/PeriodicTable
3
![Page 4: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/4.jpg)
1.16.2 Describe Mendeleev’s contribution to the development of the modern periodic tableTwo main contributions:1. Elements organized
according to their known physical and chemical properties.
2. Gaps in the tables because he predicted elements were yet to be discovered.
4
![Page 5: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/5.jpg)
1.16.3 Distinguish between atomic number and atomic massAtomic Number• It equals the number
of protons in the nucleus of an atom.
• It represents the mass of proton measured in atomic mass units (amu)
5
![Page 6: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/6.jpg)
1.16.3 continued…• It equals the number of electrons surrounding the
nucleus. • Atoms are electrically neutral. Therefore, protons
must equal electrons.• Atomic numbers increase by one as it moves from
left to right.
6
![Page 7: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/7.jpg)
1.16.3 continued…Atomic Mass• Average mass of atoms
of an element. It is written as a decimal number and measured in amu.
• Mass number is the number of protons and neutrons in an atom of an element.
7
![Page 8: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/8.jpg)
1.16.3 continued…• Number of neutrons
can be determined from the mass number and the atomic number.
• Neutrons= mass number – atomic mass
• Atomic mass also increases with some exceptions
8
![Page 9: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/9.jpg)
1.16.4 Using atomic mass and atomic number of elements, determine its number of protons, electrons, and neutrons (Hand-out)
WORKSHEETComplete chart showing element name, symbol, atomic number, atomic mass, protons, electrons, and neutrons.
9
![Page 10: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/10.jpg)
1.17 Using the periodic table, develop and understanding that the elements are grouped on the basis of similar characteristics
10
![Page 11: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/11.jpg)
1.17.1 List properties of metals1. All metals are shiny2. Ductile…ability to
be pulled or stretched Malleable…ability to be bent or moulded into various shapes.
3. Conduct electricity4. Conduct heat
11
![Page 12: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/12.jpg)
1.17.2 List properties of non-metal elements1. Dull2. Non-ductile and
non-malleable3. Do not conduct
electricity4. Do not conduct
heat well
12
![Page 13: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/13.jpg)
1.18 Using the periodic table, develop an understanding that the elements are grouped on the basis of similar characteristics
13
![Page 14: 2.2 The periodic table and chemical properties Pages 48-53 1 By Lester Green Smallwood Academy Gambo.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649de45503460f94adc105/html5/thumbnails/14.jpg)
1.19 Use the periodic table to identify new questions and problems that arise from what was learned
14