"Chemical Elements and Human Health" Chemistry and Health PPT Download

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"Chemical Elements and Human Health" Chemistry and Health PPT download, 23 pages in total.

Knowledge review

Knowledge point 1 Chemical elements in the human body

1. There are _______ elements that make up the human body, _____ are macroelements, and the rest are trace elements.

①_______ elements: content above 0.01%, such as calcium, magnesium, potassium, etc.;

②_______ elements: content below 0.01%, such as iron, iodine, fluorine, etc.

2. Constant elements:

(1) The content is relatively large, accounting for approximately __________ of human body weight;

(2) The content of _______________ four elements is relatively high, and the human body obtains these elements through the intake of water, sugar, protein, oil, vitamins and other substances;

(3) The content of 7 elements is small.

3. The role of chemical elements: regulating the ___________ of the human body and promoting health. Some elements are important materials that constitute human tissues.

Example analysis

►Type 1 Components of the Human Body

Propositional perspective: Test students’ understanding of the components of the human body

Example 1 Which of the following statements about the elements that make up the human body is incorrect ( )

A. There are more than 50 elements that make up the human body itself.

B. The four elements C, H, O, and N in the human body mainly exist in the form of water, sugar, fat, protein, and vitamins.

C. There are 11 elements that are abundant in the human body

D. Since the content of trace elements is very small, it has little impact on human health.

[Variation question] The human body is a "warehouse" of elements. The elements in the human body can be found in nature. The most abundant element in the human body is ( )

A． Hydrogen b. oxygen

C． carbon d. calcium

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For more information about the "Chemical Elements and Human Health Chemistry and Health" PPT courseware, please click on the Chemical Elements and Human Health PPT Chemistry and Health PPT tab.

"Chemical Elements and Human Health" Chemistry and Life PPT download:

"Chemical Elements and Human Health" Chemistry and Life PPT download, 22 pages in total. New Knowledge Learning Knowledge Point 1 Elements that make up the human body 1. There are many kinds of elements that make up the human body. 2. Macroelements: The content in the human body exceeds ________, including O, C, H, N,...

"Chemical Elements and Human Health" Chemistry and Life PPT:

"Chemical Elements and Human Health" Chemistry and Life PPT, 24 pages in total. Knowledge management 1. Chemical elements in the human body. Macroelements: There are more than 50 elements that make up the human body. Elements whose content exceeds 0.01% in the human body are called macroelements. There are 11 kinds of constant elements, which...

"Chemical Elements and Human Health" Chemistry and Health PPT Courseware:

"Chemical Elements and Human Health" Chemistry and Health PPT courseware, 24 pages in total. New Knowledge Learning Knowledge Point 1 Chemical Elements in the Human Body 1. Macroelements In the human body, elements with a content of ________0.01% are called macroelements, such as ________, carbon, hydrogen, nitrogen, _____..

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Update Time: 2024-10-04

This template belongs to Chemistry courseware Lu Jiao Edition Ninth Grade Chemistry Volume 2 industry PPT template

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