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kakasveta [241]
2 years ago
10

An elementary student believes a running car is an example of a chemical reaction because smoke comes out of a car. Is the stude

nt correct or incorrect? Write an explanation that will either support or oppose the student's thinking.
Biology
1 answer:
Darya [45]2 years ago
4 0

Answer:

the student is incorrect.

Explanation:

a chemical reaction is defined as: changes in one or more substances caused by a reaction, that <u>form new and different substances.</u> Smoke coming out of a car would not really be classified as turning into a new substance, the smoke is still smoke.

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Which property results from the crystal lattice structure of ionic compounds? A. low melting point B. good electrical conductivi
lions [1.4K]

Answer:

C.) crystalline solids

Explanation:

The solid materials may be crystalline or amorphous. The concept of crystal structure is related to the organization of atoms in a geometrical form. Crystalline structures are present in various materials, where atoms distributed within their structure form a network called the crystalline lattice. Therefore, crystalline structures have salts, metals and most minerals. Crystalline structures are formed by unit cells that are their basic unit, as they constitute the smallest set of associated atoms found in a crystalline structure.

The molecules of the crystalline structures can have two types of bonds, the directional ones, which include the covalent and dipole dipole and the non-directional ones where the metallic, ionic, van der Walls bonds. When formed by ionic compounds, these crystalline structures can result in crystalline solids.

5 0
3 years ago
Which of these is most likely a characteristic of a parent isotope before it releases radioactive particles?
Rudik [331]
This is a difficult question to answer with the given information...could you add more
7 0
3 years ago
Why are pigments such as chlorophyll needed for photosynthesis
Vlad [161]

Answer:

The chlorophyll pigment have photosystem 680/ PS I which captures the sunlight. Then the pigments gets excited and photosynthesis starts. Without chlorophyll photosynthesis can't happen.

Explanation:

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The chlorophyll is a double layer membrane structure. In it two photosystems works i.e. photosystem I and photosystem II. In the photosystem I light is trapped.  

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Glucose and oxygen are formed in the stroma as it does not require light. It is a light independent reaction.

Therefore, chlorophyll is first require to capture photons coming from sun.

6 0
3 years ago
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Y_Kistochka [10]

Answer:

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3 0
2 years ago
A gel-like substance enclosed by the cell membrane that contains th cells organelles
almond37 [142]
The answer is cytoplasm 
cytoplasm is a gel in the cell and contains the cells organelles :)))
i hope this is helpful
have a nice day 
4 0
3 years ago
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