"Density" Quality and Density PPT courseware download

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"Density" Quality and Density PPT courseware download

The first part of the content: Practice on classification of knowledge points

Knowledge point 1: The relationship between the mass and volume of the same substance

1. In order to study certain properties of matter, the teacher and classmates conducted experiments together and recorded the data as follows:

(1) Please use images to vividly represent the change of the mass of the cork block with its volume in Figure 6-2-1.

(2) Analyzing the data from experiments 1, 2, or 3, 4, and 5 in the table, we can conclude that for the same substance, the larger the volume, the mass _____, and the mass and volume are _____, that is, mass and volume The ratio is _____.

(3) The data from the __________ experiments in the analysis table can be summarized and concluded: different substances have the same volume but different masses, and the ratio of mass to volume is also different.

(4) In physics, ______ is often used to express this characteristic of matter.

Knowledge point 2 Density

2. The mass of an object composed of a certain substance and its volume _____ is called the density of the substance. Density is a type of substance. Different types of substances have different densities. The density of water is 1.0×103 kg/m3, and its physical meaning is ____________________; the density of a certain alloy is 2.6×103 kg/m3, which is ____g/cm3.

3． Which of the following statements about density is correct ()

A． Objects with greater mass have greater density

B. The smaller the mass of an object, the smaller its density

C. The ratio of mass to volume of an object is called density

D. None of the above statements are correct

4. A copper rod of uniform thickness (as shown in Figure 6-2-2), after cutting off a section, then ()

A． The mass becomes smaller, the volume becomes smaller, and the density becomes smaller

B. The mass becomes smaller, the volume becomes smaller, and the density remains the same.

C. The mass remains unchanged, the volume becomes smaller, and the density becomes smaller

D. Mass, volume and density remain unchanged

Density PPT, the second part of the content: Comprehensive training with regular methods

9. Which of the following statements is correct ()

A． An object with a small volume must have a small mass

B. A large object must have a large density

C. An object with high density must have a small volume

D. A drop of water has the same density as a glass of water

10. After the oxygen sealed in the cylinder is used for a period of time, regarding the changes in the mass, volume, and density of the oxygen in the cylinder, which of the following statements is correct ()

A． The mass becomes smaller, the volume becomes smaller, and the density becomes smaller

B. The mass becomes smaller, the volume becomes smaller, and the density becomes larger

C. Mass remains unchanged, volume remains unchanged, and density remains unchanged

D. The mass becomes smaller, the volume remains the same, and the density becomes smaller

11． After reading the table below, classmate Xiao Ming summarized some conclusions, among which the correct one is ()

A. The density of the same substance must be the same

B. Different substances have different densities

C. The density of solid matter must be greater than the density of liquid matter

D. Solid copper and aluminum blocks of the same mass, the copper block has a smaller volume

12. As shown in Figure 6-2-4, A, B, and C are three identical cylindrical containers. Alcohol, sulfuric acid, and salt water with equal masses are now placed in these three containers respectively. It is known that ρ sulfuric acid > ρ Salt water > ρ alcohol, then the three containers are filled with ()

A． Sulfuric acid, salt water, alcohol

B. Salt water, alcohol, sulfuric acid

C. Alcohol, sulfuric acid, salt water

D. Sulfuric acid, alcohol, salt water

13. In the experiment of "exploring the relationship between the mass and volume of substances", the relationship between the mass and volume of two substances, A and B, was obtained, as shown in Figure 6-2-5. Take two substances A and B with equal volumes, then ____ (optional "A" or "B") has a greater mass; the ratio of the volumes of two substances A and B with equal masses is _____.

Keywords: Free download of PPT courseware for eighth-grade physics volume 1 of the People's Education Press, download of density PPT, download of mass and density PPT, .PPT format;

For more information about the "Mass and Density" PPT courseware, please click the "Mass and Density ppt Density ppt" tab.

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"Density" Quality and Density PPT teaching courseware:

"Density" The first part of the mass and density PPT teaching courseware content: sort out new knowledge and explore the relationship between the mass and volume of substances. The ratio of the mass and volume of the same substance is ______, that is, the mass and volume of the same substance are ______ related; The mass and...

"Density" Quality and Density PPT download:

"Density" Mass and Density PPT Download Part 1 Contents: Knowledge Points Basic Knowledge Point 1 The relationship between the mass and volume of the same substance 1. In order to study a certain characteristic of a substance, a student used water and alcohol to conduct experimental investigations, and the measured results are as follows Data: (1) In the figure..

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Update Time: 2024-10-03

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 1 industry PPT template

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