Aliyah found a tarnished silver dollar and recalled that tarnish results when metals react with oxygen or sulfur compounds in the air. She polished the silver dollar to remove the tarnish until it was shiny again. She also polished a copper bracelet and a gold ring. What physical property of these metals makes them shiny?

Answers

Answer 1

Answer:

LUSTER

Explanation:

Answer 2

The physical property of the metals that make them shiny is called Luster. Therefore, Aliyah was able to polish the metals like silver, copper, and gold.

What is luster?

Luster is one of the important physical properties of the metals, which refers to the way light is reflected from the surface of the metal. In the context of metal, luster refers to the shininess or brightness of the metal surface.

The luster of a metal ranges from dull to very shiny and can influence the perceived value of the metal as well as its suitability for various applications.

The luster of a metal can be affected by factors such as surface roughness, impurities, and exposure to environmental conditions such as corrosion and oxidation.

The treatment of a metal surface, such as polishing and plating, can also impact the luster of a metal.

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Related Questions


(nutrient Cycles)

1. described what "carbon-based life"
means:

2. what causes carbon to return to the atmosphere in a very short time?

3. if one or more nutrients are missing in soil what could happen to the plants?

4. in salt water, blank causes algal blooms whereas in freshwater blank algal blooms.​

Answers

1. When we say life is carbon based, we mean that our skin, hat and cells are all made out of molecules that contain large amounts of carbons. Carbon atoms form the backbone of almost all the important biological molecules in our bodies ( except water ).

10. What changes during a chemical reaction between two compounds?
A. number of atoms
B. chemical bonds
C. total mass
D. total energy

Answers

Answer:

I think it's chemical bonds I'm not of that helped

The changes occurs in chemical bond during a chemical reaction between two compounds. The correct option is B.

What is chemical bond?

A chemical bond is a long-lasting point of attraction among atoms, ions, or molecules which then allows chemical compounds to form.

Ionic bonds are formed by the electrostatic force between oppositely charged ions, whereas covalent bonds are formed by the sharing of electrons.

A covalent bond is the strongest bond in chemistry. In such bonding, each atom shares electrons that bind them together.

The bonds that hold molecules together break apart and form new bonds during chemical reactions, rearranging atoms into different substances.

Each bond requires a different amount of energy to break or form; without this energy, the reaction cannot occur, and the reactants remain unchanged.

Thus, the correct option is B.

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Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?
A.By increasing the age of the cows that are bred
B.By choosing cows that are high milk producers
C.By limiting the number of offspring per cow
D.By choosing cows that can produce milk after eating the most food

Answers

Answer:

I would say B.By choosing cows that are high milk producers

this is just my guess tho

So, the answer is B. Your welcome.

What is the highest possible temperature?

Answers

Answer-

The highest possible know temperature is 142 noillion kelvins

A cold front creates what kind of weather?

Answers

Answer:

A cold front creates nasty weather.

Explanation:

1. Rain

2. Thunderstorms

3. Gusty winds

4. Tornadoes

Which of these is a result of increased biodiversity in an ecosystem?
O A. Decreased ecosystem resilience
B. Increased ecosystem stability
C. Increased artificial selection
D. Decreased species richness

Answers

B: increased ecosystem stability
The answer would be (B): Increased ecosystem stability. When there are only few species in an ecosystem, and a disease wipe out them, the ecosystem would collapse. Therefore, biodiversity is imperative for the survival of ecosystems.

How much water flows down the 1,450 mile long Colorado River
each hour?

Answers

Answer:

277 Miles

Explanation:

1, 450 Divided by X amount of time = 4 Miles every Hour

Grapes growing on a vine are observed to shrink slightly during the day and increase in size at night. This is because:
a. developing fruits, such as grapes, transpire a lot of water to stay cool.
b. photosynthesis to produce sugar occurs in the light, but respiration and, therefore, the growth of new cells occurs mostly in the dark.
c. in leaves, phloem flow to growing sinks only occurs when the stomata are closed, because the transport capacity of the xylem is too small to supply water for both transpiration and phloem flow.
d. during the day, transpiration pulls on the water in the whole plant, causing the grapes to shrink slightly.

Answers

Answer:

b. photosynthesis to produce sugar occurs in the light, but respiration and, therefore, the growth of new cells occurs mostly in the dark.

Explanation:

Photosynthesis is the means by which green plants produce their foods by the use of sunlight, chlorophyll and carbon dioxide.

During the day, the grape make use of the process, photosynthesis, to get its sufficient food, thus the reason for the slight shrink. But at night, it respire well and new cells are produced. So that its size increase a bit.

Which is an example of a polygenic trait?

Answers

Answer:

Polygenic traits are traits that are controlled by multiple genes instead of just one. The genes that control them may be located near each other or even on separate chromosomes. Some examples of polygenic traits are height, skin color, eye color, and hair color.

Answer:blood type in humans and birth weight calves

Explanation:

When you stop growing, your cells stop dividing.
True
False
Help please

Answers

Answer:

Absolutely not mitosis and meiosis don't stop until your heart stops beating.

It is false that When you stop growing, your cells stop dividing.

When you stop growing, it does not mean that all your cells stop dividing. In fact, cells in the human body continue to divide and replenish throughout life, albeit at different rates depending on the type of cell.

The human body is composed of various cell types that have different lifespans and rates of cell division. For example, cells in the skin, gastrointestinal lining, and blood undergo continuous division and turnover to replace old or damaged cells. These tissues are constantly renewing themselves.

However, some cells, such as neurons in the brain and muscle cells, have limited or no capacity for cell division after a certain stage of development. These cells primarily grow in size rather than dividing to create new cells. Therefore, not all cells in the body continue to divide once growth stops.

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What is the difference between active transport across a cell membrane and diffusion across a cell membrane?

Answers

Diffusion is the net movement of particles from a region of high concentration to a region of low concentration. Down a concentration gradient.

Active transport is the net movement of substances against concentration gradient using energy from respiration.

Hope this helps.

Explain the significance of plant collections in the 18th century.

Answers

Explanation:

Humans developed the first planned plant hybrids early in the 18th century, during this period of intense interest in botany and plant anatomy. Collecting plants became a popular pastime for the wealthy and well educated

Which of the followmg statements is true?

A. A technology Society has no impact on the environment

B. A technology society has a completely positive impact on the environment

C. A technology society has both a positive and a negative impact on the environment

D. A technology society has a completely negative impact on the environment

Answers

Answer:

C

Explanation:

C. A technology society has both a positive and a negative impact on the environment

What are graphs? Give an example of a graph that would be useful to you in your everyday life.

Answers

A graph can be used for business and for adding up tax

Based on what you have learned in this activity, will you share the link to that article on
brainpower? Why or why not? What should you tell your friend who originally shared the link
about the article? The next time that you run across a link on social media, what steps will
you take to evaluate it before clicking "share"?
I
Submit

Answers

Answer:

b

Explanation:

yes

when muscles contract, the ____ energy of ATP is used to drive the ____ energy of contraction

Answers

Answer:

1. Chemical energy

2. Mechanical (kinetic) energy

Explanation:

The contraction of our muscles is accompanied by movement. Contraction of muscles involves the proteins myosin and actin, which forms a cross-bridge. Calcium ions bind to troponin protein allowing the myosin to bind to the binding sites on the actin protein.

However, for this cross-bridge cycle between myosin and actin to occur repeatedly, ATP is needed to induce the release of the myosin from the actin active site. Therefore, When muscles contract, the CHEMICAL energy of ATP is used to drive the MECHANICAL energy (kinetic energy) of contraction.

NOTE: ATP supplies chemical energy to induce movement of muscles during contraction. Energy due to motion is called KINETIC ENERGY.

When muscles contract, the Chemical energy of ATP is used to drive the Kinetic energy of contraction ;  The missing answers are ; Chemical and Kinetic

When we contrast our muscles ATP induces the release of  myosin from its actin active site ( i.e. the use of the chemical energy contained in ATP ). the release of myosin leads to the contraction of the muscles, which is a form of mechanical/kinetic energy. The proteins involved in the contraction ( kinetic energy ) of muscles are myosin and actin while the calcium ion involved is troponin.

Hence we can conclude that When muscles contract, the Chemical energy of ATP is used to drive the Kinetic energy of contraction.

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How do I find proof of God

Answers

Answer:

you can't.

Explanation:

You can observe evidence there may be a God, but there will always be a counter argument showing that God isn't real. Basically God and biology are ideas both of which may be seen as valid. in other words it depends on who you ask

Answer:

By praying.

Explanation:

Question 25 of 25

Einstein's theory of general relativity was published in 1916. It became fully

accepted by scientists in the 1960s and is currently the best explanation of

gravity. Why did it take so long to become an accepted scientific theory?

A. The scientific community requires a certain amount of time before

a theory can be accepted.

B. Einstein's theory was difficult for many people to understand.

C. More evidence needed to be gathered to validate the ideas in the

theory

D. No scientific laws could be found to validate the theory.

SUBMIT

Answers

Answer:

B. Einstein's theory was difficult for many people to understand.

Explanation:

Einstein’s theory of general Relativity was largely Ignored for three decades because scientists at the time thought the theory was too complex compared to Newton's.

Therefore, it took long before the general science community accepted Einstein's theory of general relativity because Einstein's theory was difficult for many people to understand.

"B. Einstein's theory was difficult for many people to understand."

D. More evidence needed to be gathered to validate the ideas in the theory.

What are these ripples called

Answers

Answer:

called the surface waves

If all of your cells have the same DNA, how is it possible for one of
stem cells to become a skin cell and another of your stems cells to
become a bone cell?

Answers

Answer: daddy chill and yes they are

Explanation:

The carbon atom I'm building has 6 electrons these electrons are found in levels the first level of the carbon has?

Answers

2. First shell always has 2

_________ are organisms that consume other organisms.

A:Autotrophs

B:Heterotrophs

C: Producers

D: Plants

Answers

I believe it’s B- heterotrophs
I’m pretty sure It’s B ,

environmental science aim to solve problems such as the extinction of a specific animal or plant species and deal with important issues such as​

Answers

Answer:

Explanation:

in one to three sentences describe what happens during the regeneration stage of the calvin cycle

Answers

Answer:

In stage 1, the enzyme RuBisCO incorporates carbon dioxide into an organic molecule, 3-PGA. In stage 2, the organic molecule is reduced using electrons supplied by NADPH. In stage 3, RuBP, the molecule that starts the cycle, is regenerated so that the cycle can continue.

Explanation:

How many times does cytokinesis occur in Meiosis?

Answers

Answer:

Two Times

Explanation:

In meiosis, cytokinesis must occur twice: once after telophase I and again, after telophase II.

THIS IS NOT A QUESTION

Here is my unit 2 review guide if anyone needs it for biology!

Answers

Answer:

thanks homie

Explanation:

What are all the blood types

Answers

Answer:

– A, B, AB and O

Explanation:

4) Cell C suddenly lost all its dynamin proteins. Which of the following will most likely happen
right
away as a result of this loss?
A) Transcription factor X will no longer be able to go to the nucleus
B) A vesicle bud will no longer be pinched off from a membrane
C) A vesicle will no longer be tethered to a target membrane
D) A protein will no longer be targeted to the mitochondrial matrix
E) Two of the above

Answers

Answer:

B) A vesicle bud will no longer be pinched off from a membrane

Explanation:

Dynamin is a protein responsible for endocytosis, the process where the cell takes substances in from outside the cell through a system of vesicles. At the edge of the cell, the membrane pinches in to form a vesicle, which buds off from the membrane and enters the cell.

The step of this process that dynamin is involved in is in cleaving newly formed vesicles from the membrane. Without it, a vesicle bud will no longer be pinched off from a membrane

Dr. Ron believes that there is one overall intelligence that applies across all tasks and situations. Dr. Ron supports the notion of
O emotional
O general
O multiple
O specific

Answers

It’s not emotional not speaking in general or multiple so specific

General intelligence, commonly referred to as the “g factor,” is a wide mental capacity that affects how well on cognitive ability tests a person does. Thus, option B is correct.

What is general intelligence?

It is possible to describe general intelligence as a construct made up of various cognitive skills. These skills enable people to learn new things and resolve issues.

Underlying specialized mental talents in domains like verbal, spatial, numerical, mechanical, and mechanical abilities is this general mental capacity.

It is hypothesized that general intelligence influences how well people perform on all cognitive tasks.

You can relate general intellect to athletic ability. A person may be an exceptional runner, but this does not automatically make them a great figure skater.

Therefore, Dr. Ron supports the notion of general intelligence.

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Many schools have students make models of cells, but we ask that you make a model of something else and relate it to cells. Why do you think this may be? What have you learned so far from this project? Other than more time, is there any way you would like to improve the project?

Answers

Well we cannot make a model for you, its not like we can ship it to you Therefor, we can not answer the question's along with it. These questions come with personal experience from the model making. Have a good day//night ma'am/sir.

Answer:

Here is a model of a cell.

Explanation:

Hope it helped!

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