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"Sodium and Its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 2: Several compounds of sodium)
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2023-09-20 15:14:43
"Amount of Substances" Important elements in seawater - sodium and chlorine PPT (Lesson 3: Amount and concentration of substances)
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2023-10-05 09:46:50
"Sodium and Its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 1: Active metal element - sodium)
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2023-09-25 18:21:27
"The Effect of the Nature and Movement of Seawater on Human Activities" Physical Geographic Elements and Phenomenon PPT
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2023-09-25 17:35:17
"Sodium and Its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 1: Active metal element - sodium)
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2023-09-20 15:12:40
"Landscape Characteristics of Main Landforms" Natural Geographic Elements and Phenomenon PPT (Lesson 1: Flowing Water Landforms and Coastal Landforms)
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2023-10-05 09:37:36
"Sodium and Its Compounds" Important elements in seawater - sodium and chlorine PPT (several compounds of sodium in lesson 2)
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2023-09-25 18:21:27
"Sulfur and Its Compounds" Important non-metallic elements in chemical production PPT (Test of sulfate ion in lesson 2)
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2023-09-25 17:34:00
"Ionization of Electrolytes and Ion Reactions" Elements and the World of Matter PPT Courseware (Lesson 1: Ionization of Electrolytes)
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2023-09-25 17:34:03
"Atmospheric Heating Process and Thermal Circulation" Natural Geographical Elements and Phenomena PPT (Second Lesson Thermal Circulation and Atmospheric Movement)
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2023-09-20 15:21:03
"Landscape Characteristics of Main Landforms" Natural Geographic Elements and Phenomenon PPT (Lesson 1: Flowing Water Landforms and Coastal Landforms)
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2023-09-25 18:24:41
"Atmospheric Heating Process and Thermal Circulation" Natural Geographical Elements and Phenomena PPT (Second Lesson Thermal Circulation and Atmospheric Movement)
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2023-09-20 15:21:03
"Atmospheric Heating Process and Thermodynamic Circulation" Physical Geographic Elements and Phenomenon PPT (Second Lesson Thermodynamic Circulation and Atmospheric Movement)
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2023-09-25 18:24:41
"Ionization of Electrolytes and Ion Reactions" Elements and the World of Matter PPT Courseware (Lesson 1: Ionization of Electrolytes)
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2023-09-25 17:34:03
"Amount of Matter" Important elements in seawater - sodium and chlorine PPT (Unit of amount of matter in Lesson 1 - mole)
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2023-10-05 09:46:46
"Amount of Matter" Important elements in seawater - sodium and chlorine PPT (Unit of amount of matter in Lesson 1 - mole)
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2023-09-25 18:21:26
"Landscape Characteristics of Main Landforms" Natural Geographic Elements and Phenomenon PPT (Aeolian Landform and Karst Landform in the Second Lesson)
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2023-10-05 09:37:36
"Landscape Characteristics of Main Landforms" Natural Geographic Elements and Phenomenon PPT (Aeolian Landform and Karst Landform in the Second Lesson)
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2023-09-25 18:24:41
"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 3: Nitric acid rain and its prevention and control)
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2023-09-25 17:33:59
"Sulfur and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 3: Transformation of sulfur-containing substances in different valence states)
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2023-09-25 17:33:59
"Transformation of Sulfur" Nature and Transformation of Matter PPT (Lesson 1 Sulfur elements in different valence states in nature and the transformations between them)
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2023-09-25 17:34:01
"Chlorine and its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 2 Laboratory preparation method of chlorine and test of chloride ions)
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2023-09-25 18:21:26
"Chlorine and its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 2 Laboratory preparation method of chlorine gas and test of chloride ions)
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2023-10-05 09:46:46
"Micro Project Iodine Extraction from Kelp and Bromine Extraction from Seawater - Experience the Practical Application of the Gradient Law of Element Properties" Periodic Law of Atomic Structure Elements PPT
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2023-09-25 17:33:56
"The Nature of Seawater and the Impact of its Movement on Human Activities" Physical Geographic Elements and Phenomenon PPT (The Nature of Seawater and its Impact on Human Activities in the First Lesson)
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2023-09-25 18:24:41
"The Nature of Seawater and the Impact of its Movement on Human Activities" Physical Geographic Elements and Phenomenon PPT (The Movement of Seawater and its Impact on Human Activities in the Second Lesson)
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2023-09-25 18:24:40
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