CHEMISTRY MIDDLE SCHOOL

What is the definition of a Lewis base?a substance that donates a proton
a substance that donates electrons to form a covalent bond
a substance that accepts electrons to form a covalent bond
a substance that when dissolved in water increases hydrogen ion concentration
What is the definition of a Lewis base? a substance - 1

Answers

Answer 1
Answer:

The definition of a Lewis base is: C. a substance that accepts electrons to form a covalent bond.

What is a Lewis base?

A Lewis base can be defined as a specie of an ionic or chemical compound that contains an empty orbital which allows it to donate an electron pair (two or more electrons) to form a covalent bond.

This ultimately implies that, a Lewis base is a chemical substance that accepts an electron pair (two or more electrons) to form a covalent bond.

Examples of a Lewis base.

In Chemistry, some examples of a Lewis base include the following:

  • OH^-
  • CO
  • H_2O
  • ROH
  • NH_3

Read more on Lewis base here: brainly.com/question/3655338
Answer 2
Answer:

Answer:

the definition is : a compound or ionic species which can donate an electron pair to an acceptor compound.

so as far as i know i know the answer is: a substance that accepts electrons to form a covalent bond.

please mark me brainliest may god bless you...

Explanation:

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Sam lives in the city of Springdale and is interested in how the climate in his city compares to the climate in Ecuador. Which of the following is a testable question that could help him make this comparison?Is the climate in Ecuador better than the climate in Springdale?Do high pressure systems prefer forming in Ecuador compared to in Springdale?Are thunderstorms in Ecuador as scary as thunderstorms in Springdale?Are average yearly temperatures in Ecuador greater than in Springdale?
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Changes in DNA are known as mutations and can be sometimes produce beneficial changes in population. A mutant form of the normally light-colored peppered moth is dark-colored. The dark-colored moth blends in with soot-covered trees in heavily polluted areas.Why would the dark-colored mutation be beneficial in a polluted area?

Answers

The dark-colored mutation could be beneficial in a polluted area because this phenotype may confer an adaptive advantage.

A mutation is any alteration in the nucleotide DNA sequence (genome) of an organism.

Mutation can be beneficial, deleterious, or neutral depending on the environmental conditions in which the individual lives.

In this case, the dark-colored mutation could be beneficial for an insect living in a polluted area because bright-colored phenotypes make the moth very conspicuous to visual predators.

In consequence, dark-colored insects have more chances to survive and reproduce (i.e., they have an adaptive advantage), thereby these insects have more chances of passing this mutation to the next generation.

In conclusion, the dark-colored mutation could be beneficial in a polluted area because this phenotype may confer an adaptive advantage.

Learn more in:

brainly.com/question/10473763
The dark colored moths are beneficial in a polluted area because they have a lesser chance of being eaten since they blend into the trees polluted with soot. 

Can a compound have a molecule with a single atom?? Explain.

Answers

No, a molecule is made up of multiple atoms, so you cannot have a compound of a molecule with a single atom
No because a molecule is made of many atoms

.A diorama is a type of model. Marcy built a diorama of a forest. She put small models of trees, birds, and deer in the diorama. She also put rocks and moss on the bottom of her diorama. What does her diorama represent?

a museum display
an ecosystem
an animal
distances across Earth's surface

Answers


The diorama represents an ecosystem

Answer:

C I took this test yesterday

Explanation:

A scientist finds an organism that cannot move. It has many cells and get food from its environment. In which Kingdom does it

Answers

an organism that does not move on its own and makes food from its environment is a producer.

Is boiling water a chemical reaction?

Answers

No boiling water is not a chemical change it would be a physical change
no it is a physical change

What is the color of the stars with the highest temperature

Answers

The color of a star is a function of its temperature.

For example:

1- If a star looks red that means that its temperature is approximately 2,500 Kelvin.
2- Our Sun, which actually looks white from space, measures about 6,000 Kelvin.
3- The hotter the star, the further up the spectrum you go. The hottest stars are the blue ones. A star appears blue once its surface temperature goes above 10,000 Kelvin or so, a star will appear blue to our eyes.

Just a fact: The hottest star known in the Universe are the blue hypergiant stars. These are stars with more than 100 times mass of the Sun. One of the best known examples is ''Eta Carinae'' that is located about 7,500 light-years from the Sun. ''Eta Carinae'' could be as large as 180 times the radius of the Sun, and its surface is 36,000 - 40,000 Kelvin.

Well hope i helped! I f you need anything more ask me! And think about Eta Carinae is super hot, like wow, 40,000 Kelvin is like 79,000 degrees F. So thats hot, like no joke is super hot.
They are colored blue
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