"Classification of Matter" PPT (Second Lesson)

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"Classification of Matter" PPT (Second Lesson)

Part One Content: Learning Objectives:

1. Be able to classify pure substances according to their composition;

2. Be able to use experimental methods to classify substances through comparison

Classification of substances PPT, part 2: Classification of common substances

1. Substance classification

Mixture: A substance composed of different substances is called a mixture.

Pure substance: A substance composed of one substance is called a pure substance.

When we study the properties of a substance, we usually use pure substances.

2. Classification of pure substances

What is the biggest difference in composition between inorganic compounds and organic compounds?

3. Classification of inorganic compounds

Oxide: A compound composed of two elements, one of which is oxygen.

Metal oxide: A compound composed of two elements, one of which is oxygen and the other is a metal element.

Non-metal oxide: A compound composed of two elements, one of which is oxygen and the other is a non-metal element.

Acid: A compound in which the cations produced during ionization are all H+.

Base: A compound in which all the anions produced during ionization are OH-.

Salt: A compound that produces a metal cation (or NH4+) and an acid anion when ionized.

Classification of substances PPT, Part 3: Classroom exercises

1. Classify the following substances according to the substance classification chart and fill in the table.

Magnesium, sulfur, zinc, oxygen, magnesium oxide, sulfur dioxide, methane, calcium hydroxide, potassium permanganate, hydrochloric acid, acetylene.

2. If a certain substance is detected to contain only one element, then the substance ( )

A． It must be a pure substance B. It must be a single substance

C. It must not be compound D. Must be a mixture

3. Classifying substances according to certain basis is a convenient way for us to understand the composition, structure, properties and uses of substances.

The following substances are available: ① Soda ash; ② Quick lime; ③ Hydrochloric acid; ④ Hydrated lime; ⑤ Methane; ⑥ Copper; ⑦ Graphite; The correct classification of the above substances is - ( )

A． Those belonging to organic matter include ③⑤

B. Those that belong to simple substances include ②⑥⑦

C. Alkali include ①④

D. Among the oxides are ②

4. Analogy is a commonly used thinking method in learning. The following analogy results are available, the wrong one is ---- ( )

① The acid-base neutralization reaction generates salt and water, so the reaction that generates salt and water must be a neutralization reaction;

②The aqueous solution of alkali is alkaline, so the alkaline solution must be an alkaline solution;

③Oxides all contain oxygen, so compounds containing oxygen must be oxides;

④ All organic matter contains carbon, so compounds containing carbon are all organic matter.

A． Only ① B． Only ①②③

C. Only ②③④ D． ①②③④

Keywords: Zhejiang Education Edition ninth grade science PPT courseware free download, classification of substances PPT download, .PPT format;

For more information about the "Classification of Substances" PPT courseware, please click on the "Classification of Substances" ppt tag.

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Update Time: 2024-11-24

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