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2 years ago

Why are metals good conductors of electricity but covalent compounds are poor conductors

1 answer:

5 0

The electrons in the outermost shell of the covalent compounds are shared by nearby atoms. As there are no free electrons for conducting electricity, the covalent compounds are perfect insulators at absolute zero. As the temperature increases, some electrons move from valence band to conduction band. This gives rise to conductivity. But as the numbers of charge carriers are very low, covalent compounds are poor conductors. On the other hand metals are good conductors cause of their bonding. Metallic bonding consists of a sea of electrons rather than discreet bonds. The free electrons are able to move freely. Since electricity and heat need electrons to move, the bonding promotes conductivity.

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Females developing wider hips and males developing facial hair are examples of

Alexeev081 [22]

It would be puberty or secondary sexual characteristics

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3 years ago

How long after a living thing dies is C14 useful for dating

Katarina [22]

Answer:

"Carbon-14 dating can determine the age of an artifact that is up to 40,000 years old. Living organisms absorb carbon my eating and breathing." Credit to NDT

Explanation:

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2 years ago

Chris and his friends go swimming in a local river. Afterward, his friends break out with a rash, but he does not. The group soo

Kamila [148]

The statement that best explains why Chris did not get a rash from the water was that Chris's medication has an antagonistic relationship with the toxin in the water. That is option B.

<h3>What is drug-drug interaction?</h3>

Drug-drug interaction is definitely as the relationship that exists between two drugs when administered together or at the same time.

This relationship that exists between the drugs could be:

Synergistic relationship or

Antagonist relationship.

A synergistic relationship is the type of relationship that occurs between two drugs where by the total effect of the drugs are greater than the sum of the individual effects of each drug.

An antagonistic relationship is the type of relationship that occurs between two drugs where by the both drugs has opposite effects on the body.

Therefore, Chris didn't have the rash because his medication has an antagonistic relationship with the toxin in the water.

Learn more about drugs here:

brainly.com/question/11185154

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3 0

1 year ago

Read 2 more answers

2. What is the complementary DNA sequence for the following DNA strands? Write the sequence of the complementary strand below th

DaniilM [7]

Answer:

CGTATC - DNA complementary strand- GCATG

CTTTCAAG- DNA complementary strand-GAAAGTTG

GAGACTTAC-DNA complementary strand-CTCTGAATG

Explanation:

Remember that the complementary sequence will be based on base pairing for DNA, so the A will pair with T, C with G

6 0

2 years ago

What are important functions of fiber in the body?

uysha [10]

Answer:

Fiber helps to prevent <em>constipation </em>in the human digestive system.

Explanation:

According to nutritionists fiber is very important in digestion as it increases the amount of stool , hence prompting for deification which generally reduces the amount of time waste stays in the small intestines .

Another reason is that it gets in touch with the schist that has been rejected or is of no value to the system and binds it to make it compact waste hence it is easier to move along the small intestine and the colon .

Finally it facilitates movement and exercise of the bowel , by prompting regular movement .

8 0

1 year ago