1- Periodicity of elements and their properties
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1- Attempts of elements classification Part 1 -
1- Attempts of elements classification Part 2
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1- Attempts of elements classification Quiz -
2- Graduation of elements properties in the modern periodic table Part 1
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2- Graduation of elements properties in the modern periodic table Part 2
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2- Graduation of elements properties in the modern periodic table Part 3
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2- Graduation of elements properties in the modern periodic table Quiz
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3- Main groups in the modern periodic table Part 1
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3- Main groups in the modern periodic table Part 2
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3- Main groups in the modern periodic table Quiz
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4- Water Part 1
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4- Water Part 2
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4- Water Quiz
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Unit Exam
2- The atmosphere and protecting the planet earth
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1- The atmospheric layers Part 1
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1- The atmospheric layers Part 2
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1- The atmospheric layers Part 3
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1- The atmospheric layers Quiz
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2- Erosion of ozone layer and Global warming Part 1
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2- Erosion of ozone layer and Global warming Part 2
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2- Erosion of ozone layer and Global warming Quiz
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Unit Exam
3- Fossils and protecting species from extinction
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1- Fossils Part 1
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1- Fossils Part 2
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1- Fossils Quiz
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2- Extinction Part 1
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2- Extinction Part 2
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2- Extinction Quiz
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Unit Exam
Mock Exam
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Mock Exam
Science_Answers
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