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7nadin3 [17]
3 years ago
13

Questions

Chemistry
1 answer:
ASHA 777 [7]3 years ago
7 0

Answer:

Explanation:

1. diffusion is a physical process when there is random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

2. Osmosis is the diffusion of water where molecules of water move passively (without energy) from high concentration to low concentration. eg: the way water rushes into a sponge.

3. Active transport moves particles from low to higher concentration. The difference between diffusion and active transport is diffusion does not require energy (eg: oxygen moving from the airways to the lungs - there is very little oxygen in the lungs but lots in the air).  whereas active transport does require energy (eg: when plants take up nutrients from the soil. The soil does not have a large concentration of nutrients, but the plant does)

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Desert plants work hard to make use of what's available. They use the sun's energy to convert carbon dioxide (CO2) and water (H2O) into sugar, a process called photosynthesis. During this process, stomata on a plant's leaves and stems open to absorb carbon dioxide from the air and in return release oxygen. :)
4 0
3 years ago
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What are the significance of metals in human life and civilization?
7nadin3 [17]

Answer:

Metals have an important role in our daily life. The discovery of the metal is said to be the most important milestone in the history of human civilization. We cannot live without machines now. All machines are made up of metals. Machines reduce the work of man. Many modern facilities would not have been possible without metals. Most metals occur as their compounds in nature.

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4. What is the role of the<br> benedict solution in testing for<br> presence of carbohydrates
Vanyuwa [196]

Answer:

it identifies reducing sugars (monosaccharide's and some disaccharides), which have free ketone or aldehyde functional group

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3 0
2 years ago
Help can you match the answers to the definition PLZ Need this ASAP 30 points
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Answer:

1-C

2-D

3-B

4-A

Explanation:

I think it is this if it is not , sorry!

8 0
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What does expunge mean?
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It means is where something is removed or erased completely or something unwanted or unpleasant.


Hope this helps and the right meaning of expunge.

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