"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 7

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"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 7

What is a single substance?

Can the same element form different elements?

Yes, for example: oxygen element can make up two different elements, oxygen and ozone, and phosphorus element can make up two different elements, red phosphorus and white phosphorus.

Think about it: Do you know what substances contain carbon?

Guess: Can carbon element be composed of different elements?

1. Carbon element

1. Diamond

physical properties

Pure diamond is a colorless, transparent, regular octahedral-shaped solid.

Diamond is the hardest naturally occurring substance.

2. Graphite

Dark gray, metallic luster, opaque, fine flake-like solid.

One of the softest minerals with a creamy feel.

High temperature resistance

good electrical conductivity

Compare the differences between carbon and carbon:

"Carbon" is the name of the element and is the general name for a class of atoms with a nuclear charge of 6. For example: carbon element, carbon element, carbon-containing compounds, carbon monoxide. (Cannot use "charcoal" here)

"Charcoal" refers to a certain element composed of carbon elements - charcoal, activated carbon, coke, carbon black, etc.

Generally, when the specific element is not specified, carbon is customarily used, such as "hot carbon" and "when carbon burns".

What properties of the substance are utilized for the purpose of each of the following substances?

(1) Graphite is often used in battery electrodes because ___;

(2) Activated carbon can be used in the canister of gas masks because ___;

(3) Diamond can be used as drill bits for drilling machines because __;

(4) Charcoal can remove the odor in the room because __;

(5) Graphite is often used to make pencil leads because ______.

Please listen to the question

Activated carbon is commonly used as a water purifying agent in household water purifiers. This is because activated carbon ( )

A. Can be used as a catalyst

B. Loose and porous, strong adsorption

C. Non-toxic

D. Can convert hard water into soft water

The reason why the physical properties of diamond and graphite are very different is ( )

A. The arrangement of carbon atoms in diamond and graphite is different.

B. Diamond is a simple substance, while graphite is a compound

C. Diamond does not contain impurities, while graphite does.

D. Diamond and graphite are composed of different elements

Graphite can be used as electrodes in high-temperature electric furnaces because ()

A. Can burn B. Can transfer heat

C. Very soft D. High temperature resistant and conductive

Flammability of elemental C

1. Stability at room temperature: Purpose:

2. Activity under high temperature:

1. Flammability: C+O2 = CO2 (releases heat)

2. Reaction of carbon with certain oxides

Phenomenon:

1. The black powder turns into purple-red;

2. Generate gas that turns clear lime water into white and turbid water.

What is the difference between "carbon" and "carbon"?

The main elements of carbon include diamond and graphite, as well as amorphous carbon. Amorphous carbon includes charcoal, activated carbon, coke and carbon black.

"Carbon" refers to some elements formed from the carbon element, mainly including charcoal, coke, activated carbon and carbon black. "Carbon" is the name of the element and is the general name for all atoms with a nuclear charge of 6. Therefore, carbon is composed of the carbon element The elemental substances formed by the carbon element are not all carbon, such as diamond, graphite, etc.

chemical properties of carbon

1. Very stable at room temperature

2. Flammable under heating or high temperature conditions

3. Reducible under heating or high temperature conditions.

Class exercises

1. In the reaction C+2CuO =2Cu +CO2, _____ is the oxidizing agent, ______ is the reducing agent, _______ is oxidized, and ____ is reduced.

2. Before burying the wooden piles, the surface of the section buried in the ground is often burned black with a small fire. The reason is _______________.

4. Among the following changes, which one is a chemical change ( )

A. After air mixed with reddish-brown nitrogen dioxide gas passes through activated carbon, the color of the gas disappears

B. Graphite transforms into diamond under certain conditions. C. Graphite conducts electricity.

D. Drop red and black water into distilled water, add a few pieces of charcoal and shake. After filtering, the filtrate is colorless.

5. The reason why the physical properties of diamond and graphite are very different is ( )

A. The number of nuclear charges of the two is different. B. The number of electrons outside the nucleus of the two is the same.

C. The number of electrons in the outermost shell of the two is different. D. The arrangement of carbon atoms in the two is different.

6. Among the following changes, which one is a chemical change ( )

A. Use graphite powder to open the rusty iron lock B. Diamond to score the glass

C. Graphite transforms into diamond D. Pencil lead breaks

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For more information about the PPT courseware "Carbon and Carbon Oxides Diamond Graphite and C60", please click the Carbon and Carbon Oxide ppt Diamond Graphite and C60ppt tag.

"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 6:

"Diamond, Graphite and C60" Carbon and Carbon Oxide PPT Courseware 6 Question: Can the same element form different elements? Why? The same element can form different elements. Reason: The same type of atoms, arranged in different ways, form different elements..

"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 5:

"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 5 Different elements can form different substances. O2 P C Fe Cu H2 N2 Can the same element make up different substances? O2 and O3 Red phosphorus and white phosphorus Substances composed of the same elements must be single...

"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 4:

"Diamond, Graphite and C60" Carbon and Carbon Oxide PPT Courseware 4 Recall: What is a pure substance composed of the same element called? ----- Can the same element form different elements? ----- -Yes! For example: Oxygen element consists of oxygen (O2) and ozone (O3)..

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Update Time: 2024-10-05

This template belongs to Chemistry courseware People's Education Press Ninth Grade Chemistry Volume 1 industry PPT template

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