People's Education Press High School Chemistry Compulsory Course I
Cantonese Education Edition Ninth Grade Chemistry Volume 1
Beijing Curriculum Reform Edition Ninth Grade Chemistry Volume 1
Beijing Curriculum Reform Edition Ninth Grade Chemistry Volume 2
People's Education Press Ninth Grade Chemistry Volume 1
Lu Ke Edition High School Chemistry Compulsory Course 1
Lu Jiao Edition Ninth Grade Chemistry Volume 1
Hunan Education Edition Ninth Grade Chemistry Volume 1
Cantonese Education Edition Ninth Grade Chemistry Volume 2
People's Education Press Ninth Grade Chemistry Volume 2
People's Education Press High School Chemistry Compulsory Course 2
Lu Ke Edition High School Chemistry Compulsory Course 2
Hunan Education Edition Ninth Grade Chemistry Volume 2
Lu Jiao Edition Ninth Grade Chemistry Volume 2
Category | Format | Size |
---|---|---|
Beijing Curriculum Reform Edition Ninth Grade Chemistry Volume 2 | pptx | 6 MB |
Description
"Several Common Bases" Acids and Bases PPT Courseware
Review the chemical properties of acids
1. indicator
Purple litmus solution turns red
Colorless phenolphthalein solution does not change color
2. Active metal: react to generate salt and hydrogen
3. With carbonate: generate salt, water, carbon dioxide
4. With metal oxides: generate salt and water
5. With alkali: generate salt and water
Compare the following 4 chemical reactions:
NaOH + HCl = NaCl + H2O
2NaOH + H2SO4 = Na2SO4 + 2H2O
Ca(OH)2 + 2HCl = CaCl2 + 2H2O
Ca(OH)2 + H2SO4 = CaSO4 + 2H2O
Understand the corrosive nature of sodium hydroxide
1. Be very careful when using to prevent skin and clothes from being corroded.
2. Using the strong corrosiveness of sodium hydroxide, you can make homemade leaf vein bookmarks.
[Experimental exploration]
Ask the question: Does carbon dioxide react with sodium hydroxide solution?
Conjecture 1: Carbon dioxide gas reacts with sodium hydroxide solution
Conjecture 2: Carbon dioxide gas and sodium hydroxide solution do not react
Analysis: Analyze the above experiment from the perspective of particles and write a chemical reaction equation.
Extension: What will happen if sodium carbonate solution is added? Write the equation for the reaction.
summary:
Properties of bases
and indicator effect
Reacts with non-metal oxides to form salt and water
Reacts with acid to form salt and water
Reacts with certain salts to form new bases and new salts
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For more information about the PPT courseware "Acides and Bases: Several Common Bases", please click on the Acids and Bases ppt: Several Common Bases ppt tag.
"Several Common Bases" Acids and Bases PPT Courseware 4:
"Several Common Bases" Acids and Bases PPT Courseware 4 Knowledge Review Knowledge Point 1 Physical properties of sodium hydroxide and calcium hydroxide Sodium hydroxide: white solid, ____ dissolves in water and releases a lot of heat. Easily absorbs moisture and is highly corrosive. Calcium hydroxide: white...
"Several Common Bases" Acids and Bases PPT Courseware 3:
"Several Common Bases" Acids and Bases PPT Courseware 3 Chemical Properties of Acids ① Acids and acid-base indicators ② Acid + metal = salt + H2 ③ Acid + metal oxide = salt + H2O ④ Acid + alkali ⑤ Acid + carbon Acid = salt + H2O + CO2 The alkali preserved egg, soap liquid and other detergents in daily life include...
"Several Common Bases" Acids and Bases PPT Courseware 2:
"Several Common Bases" Acids and Bases PPT Courseware 2 Review before class: Acid: A compound in which all cations produced during ionization are hydrogen ions (H+). Such as HCl, H2SO4, HNO3, H2CO3 Alkali: All the anions produced during ionization are compounds of hydroxide ions (OH-). ..
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Update Time: 2024-10-04
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