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balu736 [363]
3 years ago
9

Describe a chemical indicator. What is it? What is it used for? How does it work?

Biology
1 answer:
insens350 [35]3 years ago
4 0
A chemical indicator is a substance that changes color when you an acid to it. it is used to test the acidity in water, soil, etc.

i havent learned how it works yet , but ill try to figure it out for you
 
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Please help!
Ahat [919]

Answer:

Electrons Can Donate - 0

Electrons Can Receive- 2

Valence  - 2

Explanation:

The electronic configuration of oxygen is 1s^2s^22p^4. Thus in the p-orbital there is deficiency of two electrons. Hence, it can receive/share electron but it cannot donate electrons. This makes oxygen as a good electron acceptor. Since there is a deficiency of two electrons in the outermost shell of oxygen, the valence of oxygen in thus -2

6 0
3 years ago
Describe the structure of​
wlad13 [49]
Of what????

I can help :)
4 0
2 years ago
Read 2 more answers
Which of the following describes an aquifer’s ability to allow water to flow through? Porosity,Permeability,Geology or Recharge
galben [10]
I miss freshman science classgood stuff but the correct answer is permeability the definition of permeability is how easily a membrane allows a liquid to pass through
8 0
3 years ago
What is one way to separate a substance that is dissolved in water?
Illusion [34]

Answer:

Mixtures can be separated using a variety of techniques. Chromatography involves solvent separation on a solid medium. ... Evaporation removes a liquid from a solution to leave a solid material. Filtration separates solids of different sizes.

7 0
3 years ago
Read 2 more answers
Could you use the dichotomous key in this section to identify a species of
Pepsi [2]

Answer:

Yes, the species of a lizard can be identified using dichotomous keys.

Explanation:

A dichotomous key is an identification tool used by the biologists especially taxonomists to identify and classify the organisms.

The dichotomous keys are based on the characteristic feature of an organism for which two which contains two contrasting feature. The dichotomous keys are the most common tools used to classify an organism.

A species of lizard can be identified using these keys by selecting the key characteristic feature  shown by the species which could be quantitative like weight, height or it could be qualitative like colour.  By comparing these characteristics, it becomes easy to identify the species.

5 0
3 years ago
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