How does valence electron pooling explain why metals can be hammered into a sheet?

Answers

Answer 1
Answer:

When forming bonds in metal, metal releases its valence electron to produce positive ions.

What is a valence electron?

Free radicals are electrons that exist in metallic bonds. It is simpler to alter the metal's shape because the electrons may easily flow between the atoms.

Whenever they establish bonds, metal atoms quickly surrender their valence electrons to produce positive ions.

Therefore free electrons found in metal alter the shape, due to the flow between the atoms.

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Answer 2
Answer: Electrons in metallic bonds are what are known as free radicals. They move freely among the atoms and create a "sea" of electrons, making it easier to change the shape of the metal.

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Why would repeated practice of guitar chords make you a better guitar player

Answers

if you know the guitar cords by heart, you will play guitar better
because everytime you play you get better when you put effort

While the DNA in a human skin cell was being replicated, one of the bases in one of the strands was skipped over and no nucleotide was matched with it. The nucleotides on either side of it then joined together. What will be the most likely result of this for the cell in which it happened?Select one:
a. All the proteins the cell creates from the miscopied strand will do different jobs than the old ones.
b. The miscopied DNA will be replaced with an accurate DNA copy once the cell divides.
c. Both new DNA strands will end up together in a new cell, and the inaccurate one will be discarded.
d. The cell that receives the miscopied DNA will die, and the cell with the accurate copy will live.

Answers

Definietly C because both of the new dna strand will end up together in a new cell and the other one will be discarded from the cell

Final answer:

When a base is skipped during DNA replication, it can lead to a mutation and altered protein function.

Explanation:

When a base in one of the DNA strands is skipped during replication, it can lead to a mutation in the DNA sequence. This means that the resulting protein created from the miscopied DNA strand may have a different structure and function compared to the original protein. Therefore, option a. All the proteins the cell creates from the miscopied strand will do different jobs than the old ones, is the most likely result of this error.

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A group of similar cells that perform a specific function is a(n)a. organ system.
b. organ.
c. tissue.
d. organism.

Answers

tissue is the answer
its C , tissue (not the kind you sneeze into) is a similar group of cells that perform the same function. a tissue. and a group of tissues working together is called an organ. and a group of organs working together is called an organ system.

What element has 81 protons in the nuclei of its atoms?

Answers

Tl = thallium

look at the periodic table look for element number 81 on the periodic table and that's TI

It's mass number is 204.38

Which organelle is used for carrying out photosynthesis?

Answers

The organelle that carry out photosynthesis is the chloroplast.

Explanation:

Chloroplasts are organelles, functional subdivisions, in plant and algal cells. The central role of chloroplasts is to carry photosynthesis.Chloroplasts are organelles observed in plant cells and eukaryotic algae that accompany photosynthesis. Chloroplasts receive sunlight and use it in combination with water and carbon dioxide gas to generate food for the plant. . In this regard, they are similar to mitochondria but are observed only in plants and protista.

Chloroplast is used for carrying out photosynthesis. Photosynthesis is a process by which plants gets it's food.

What is chloroplast?

Plants and algae have chloroplasts, which're essential, for capturing energy and transforming carbon dioxide and water into oxygen and glucose.

Chloroplasts have a structure with two membranes. They also house a specialized membrane system called the thylakoid membrane.

The thylakoid membrane serves as the site for the reactions, in photosynthesis. During these reactions water molecules are split using energy to obtain hydrogen and oxygen. The hydrogen is then utilized to create ATP, which acts as the cells energy currency.

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2. Which organelles are involved in energy conversion? (1 point) A.)mitochondria and chloroplasts B.)mitochondria and ribosomes C.)smooth and rough endoplasmic reticulum D.)Golgi apparatus and chloroplasts 3.)Which means of particle transport requires input of energy from the cell? (1 point) A.)diffusion B.)osmosis C.)active transport

Answers

Question 2.

The organelles that are involved in energy conversions are mitochondria and chloroplasts.

Further Explanation

Mitochondria

  • Mitochondria are organelles that are found in all eukaryotic cells. They are the power house of the cells as they provide energy that is required to drive all cellular processes in the cells.
  • The process through which mitochondria generate energy in the form of ATP to be used by the cells to drive its activities is called cellular respiration.

Cell respiration  

  • Cellular respiration is the process by which food substances are broken down to generate energy in the form of ATP.
  • ATP is the usable form of energy by all cells to drive cellular activities such as transport, growth and development, excretion, etc.

Chloroplasts  

  • These are organelles that are found in plant cells. They are sites for a process known as photosynthesis in which plants use energy from the sun, water and carbon dioxide to generate simple sugars such as glucose.
  • The process of photosynthesis involves energy conversions in plants which occurs in two stages; the light dependent stage and light independent stage.

Keywords: Mitochondria, chloroplasts, cellular respiration, photosynthesis

Question 3

Active transport is the means of particle transport that requires an input of energy from the cell.

Further Explanation:

Active transport  

  • Active transport is a type of physiological process which involves movement of substance against a concentration gradient.
  • This type of transport requires energy in the form of ATP to aid movement of molecules against a concentration gradient.  

Passive transport  

  • Passive transport on the other hand involves movement of substances down the concentration gradient and therefore does not require an energy input.
  • There are three types of passive transport; diffusion, facilitated diffusion and osmosis.  

Diffusion  

  • It is a type of passive transport that involves the movement of solute molecules from a region of high concentration to a region of low concentration.  

Osmosis

  • This is a type of passive transport that involves the movement of solvent molecules, normally water from a region where they are highly concentrated to a region where they are lowly concentrated through a semipermeable membrane.

Keywords: Active transport, energy, ATP  

Learn more about:

Level: High school  

Subject: Biology  

Topics: Cellular organelles, Physiological process  

Sub-topics: Active transport  

It is believed that mitochondria and chloroplasts are known to be energy converting organelles. Some components of the cells carry the ability to work as small machines and are responsible for withdrawing energy from the chemical bonds found in the ultimate source of nourishment in all living cells called glucose.

The mode of particle transport which needs the input of energy from the cell is called active transport. Active transport, in cell biology, refers to the movement of the molecules through the membrane against the concentration gradient, which means from an area of lower concentration to an area with higher concentration.

Further Explanation:

The energy converting organelles of the eukaryotes is developed from the prokaryotes which were engulfed by the primitive eukaryotic cells. This evolved a symbiotic relationship between them. This explained the reason behind mitochondria and chloroplasts having their own DNA or deoxyribonucleic acid which encodes for certain proteins.

Energy processing in plants is fundamentally similar to that of animals and most fungi. The ultimate objective is to split down the glucose into smaller molecules and absorb the ATP or adenosine triphosphate molecules. Mitochondria are known to be the powerhouse of the cell as they are the sites for aerobic respiration.

Chloroplasts, on the other hand, stores the chlorophyll in tiny bags called thylakoids. In this process, the plants use light energy in order to produce ATP and NADPH which are known to be energy-carrying molecules and then produce glucose by using this energy.

Active transport is of two kinds,

  1. Primary active transport
  2. Secondary active transport

Primary active transport utilizes adenosine triphosphate while secondary one uses an electrochemical gradient. A typical example of active transport is the uptake of glucose in the intestines in human physiology.

The movement of the ions and other molecules through the membrane of the cell without any requirement of the energy input refers to passive transport. This process does not require any input of the cellular energy as it is driven by the ability of the system to develop in entropy. There are four types of such transport, namely, filtration, osmosis, facilitated diffusion and simple diffusion.

Learn more:

  1. Learn more about photosynthesis brainly.com/question/873199
  2. Learn more about plants brainly.com/question/862697
  3. Learn more about diffusion brainly.com/question/1386629

Answer details:

Grade: High school

Subject: Biology

Chapter: Plant physiology

Keywords:

Chloroplast, mitochondria, plant cell, animal cell, powerhouse, energy, ATP, simple diffusion, facilitated diffusion, active transport, NADPH.