Regan is trying to determine if an unknown element is a metal. She does not want to damage or change the physical appearance of the element in any way. Design an experiment that could determine if the mystery element is a metal without changing its appearance.

Answers

Answer 1

Explanation:

Well, one could use a magnet to see if it's ferrous. One could melt it to check which type it is, use a metal detector, or just use their senses: If it dings or clinks like metal, and feels like it’s texture. If it polishes with metal polish, is reflective, can be shaped or shape when heated… It usually is a metal. If it rusts, or oxidizes, it is or contains metal. If it “smells" like metal, most likely, it is metal. Finally, if it walks like metal, and quacks like metal, most likely we have a metal


Related Questions

Miguel y Andrés empujan dos cajas del mismo material y de diferente peso, aplicándoles la misma fuerza, como se muestra en la siguiente figura: Si Miguel y Andrés empiezan a empujar sus cajas al mismo tiempo, ¿cuál de los dos cruzará primeroel banderín?

Answers

Answer:

Cualquiera sea más ligero porque será más fácil de empujar. Dando como resultado la caja para superar la línea de meta más rápido

Explanation:

This map shows the counties in Montana that are prone to dam failure. If you were in charge of flood control in Montana, where would your biggest areas of concern be? What other data would you collect about these areas or about local weather patterns to help you make a flood-control plan for the state?

Answers

Answer:

The focus would be the western side of the state and several counties in the central part of the state because there are many high-risk dams in these areas. Knowing what communities and structures are located around these dams, the average precipitation rate, and projected rainfall totals would be helpful in designing a flood-control plan. Knowing the age and condition of each dam would be important for setting priorities in the plan.

Write a Haiku about science please

Answers

Light and energy,

Electricity abound,

Generating life.

inherited traits are governed controlled by

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Answer:

Inherited traits are controlled by genes. In this case, genetic material.
Inherited traits are controlled by genes and the complete set of genes within an organism's genome is called its genotype.

Genetic material.

PLEASE ANSWER

Which conclusion do the graphs support?

A. The faster people use trees, the higher the biodiversity.
B. Trees have little to no effect on biodiversity.
C. Deforestation leads to loss of biodiversity.
D. Biodiversity causes deforestation.

Answers

Answer:

C

Explanation:

deforestation leads to loss of biodiversity

where is sucrose transported to in plants?
(name like either roots, leaves, where?)

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To all parts but particularly u can say phloem sap

what makes some melt? What happens to the particles in snow as it melts?

Answers

Heat and kinetic energy makes snow melt. The particles start to create kinetic energy as they start moving a lot. Can I have brainliest pls?

what would the chromosome to the right be called?

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Answer:

The two identical chromosomes that result from DNA replication are referred to as sister chromatids. Sister chromatids are held together by proteins at a region of the chromosome called the centromere. Chromosomes undergo additional compaction at the beginning of mitosis.

Explanation:

Based on the position of centromere and length of chromosomal arms, the chromosomes are classified into 4 groups:

(1). Telocentric chromosomes.

(2). Acrocentric chromosomes.

(3). Sub-metacentric chromosomes.

(4). Metacentric chromosomes.

Which organelles must work together to provide food and energy to a plant cell?

Answers

Answer:

Mitochondria are the working organelles that keep the cell full of energy. In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose.

Chloroplast and mitochondria are organelles that must work together to provide food and energy to a plant cell.

Plants are living organisms that are capable of nourishing themselves from inorganic substances.

The complex chemical process by which they manage to do so is called photosynthesis and it takes place in chloroplasts.

Chloroplasts are elliptical-shaped organelles - their number varies between 20 and 100 in each plant cell - found in leaves and possessing the enzymatic machinery necessary to transform solar energy into chemical energy and, finally, into food.

The plant cell needs energy to grow and multiply and the mitochondria provide most of this energy by performing the last stages of the breakdown of food molecules.

Its main function is to supply the electron carriers (ATP), a product of cellular respiration, which provide the energy that the cell needs.

Therefore, we can conclude that within the leaves of plants, in the chloroplasts of plant cells, the chemical process that transforms inorganic matter into food takes place and the mitochondria are the energy-producing organelles.

Learn more here: https://brainly.com/question/21759042

The nucleus acid blank copies DNA so blank can be made

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Answer:

The nucleus acid Combinent copies DNA so Rna can be made

What biome is most of the small islands

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Mediterranean I think

what is insomnia ?...​

Answers

Answer:

sahi bol rahi hai ye ladki

Explanation:

I also think ,u lack ur sleep

Answer:

Insomnia is a common sleep disorder that can make it hard to fall asleep, hard to stay asleep, or cause you to wake up too early and not be able to get back to sleep.

Explanation:

examples of green house gases​

Answers

Answer:

Carbon dioxide

Methane

Nitrous Oxide

Explanation:

Need help

The photograph shows a consequence of air pollution.
Which of these was most likely the cause of the effect shown in the
photograph?

A. Eutrophication

B. Acid deposition

C. Ozone depletion

D. Bioremediation

Answers

The most likely cause of the effect shown in the given photograph is Acid deposition.

What are the causes of Air pollution?

The causes of air pollution include excessive burning of fossil fuels, industrial emissions, carbon emissions from automobiles, construction and industrial wastes, etc.

Acid deposition may be also known as Acid rain. It includes the form of precipitation with several acidic components like nitric acid and sulfuric acid.

These precipitations finally falls on the earth from the atmosphere in the form of rain, snow, fog, etc., and are deposited on tall trees, buildings, and objects, and lose their natural beauty.

Therefore, the most likely cause of the effect shown in the given photograph is Acid deposition.

To learn more about Acid deposition, refer to the link:

https://brainly.com/question/718250

#SPJ2

Answer:

Acid Depletion

Explanation:

Which type of lipid has a least one double bond ( i.e. a kink?)
a -saturated
b- unsaturated
c - monosaccharide
d - disaccharide

Answers

Answer:

B Unsaturated

Explanation:

Unsaturated fat, a fatty acid in which the hydrocarbon molecules have two carbons that share double or triple bond(s) and are therefore not completely saturated with hydrogen atoms.

Tectonic plates can affect __________________ environmental changes, which might be a cause for species extinction

Answers

Answer:

I believe it is long term.

Explanation:

did it in edge 2020

The photo shows a process called mosquito fogging.
What is one purpose of mosquito fogging?
O A To prevent people from getting stek from undercooked meat
Te treat people who have infeetiens caused by Viruses
e. Te eamy waste away from eities so people dont get siek
D. To kill insects that commonly spread diseases to people

Answers

Answer:

D. To kill insects that commonly spread diseases to people

Answer:

D. To kill insects that commonly spread diseases to people

Explanation:

Fogging is a technique used for killing insects that involves using a fine pesticide spray (aerosol) which is directed by a blower.

What method do scientists use to trace plant and animal extinctions through Earth's history

Answers

Answer:

Paleontology is the study of the history of life on Earth as based on fossils. Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock.

Explanation:

Because there are very few ways of directly estimating extinction rates, scientists and conservationists have used an indirect method called a “species-area relationship.” This method starts with the number of species found in a given area and then estimates how the number of species grows as the area expands.
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What does the prefix pseudo mean in the word pseudoscience?

false
subjective
systematic
factual

Answers

Hii!!! I believe the answer is A. False. (:

If the amount of CO2 in the atmosphere increases, do we expect to record an increase or decrease in the pH of the ocean? Why?

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Answer:

As the atmospheric concentration of carbon dioxide above water increases, the acidity of the water will increase causing the pH to decrease.

8.What attaches muscles to bones?

veins
tendons
ligaments
joints

Answers

Tenons attach the muscles to the bones

What does the temporal lobe and Cerebellum do?

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Answer:

The temporal lobes are also believed to play an important role in processing affect/emotions, language, and certain aspects of visual perception.

The cerebellum is busy planning, adjusting and executing movements of the body, the limbs and the eyes.

Explanation:

all you need is in the photo


ASAP​

Answers

Answer:

A B and C but not D

Explanation:

Moving from a Hight concentration gradient to a low concentration gradient means moving from an area where a substance in quantity to an area where it is lower in quantity. D is the only one showing something to be moved against a concentration gradient because there are more squares inside the cell than outside the cell yet the squares are still being moved into the cell.

Discarded materials other than fluids from natural, municipal, agricultural, and industrial sources are called __________.
A)
hazardous waste
B)
air pollutants
C)
particulates
D)
medical waste
E)
solid waste

Answers

the answer is solid waste

I hope it helps you

Answer:

B

Explanation:

Most of these industrial age resources that they emit are often called air pollutants

Describe three abiotic and three biotic components of an ocean marine ecosystem, Please Help Now!!

Answers

Answer:

Biotic factors include plants, animals, and microbes; important abiotic factors include the amount of sunlight in the ecosystem, the amount of oxygen and nutrients dissolved in the water, proximity to land, depth, and temperature. Sunlight is one the most important abiotic factors for marine ecosystems

Explanation:

Answer:

Biotic factors include plants, animals, and microbes; important abiotic factors include the amount of sunlight in the ecosystem, the amount of oxygen and nutrients dissolved in the water, proximity to land, depth, and temperature. Sunlight is one the most important abiotic factors for marine ecosystems

Explanation:

The nucleotide base sequence of a strand of DNA is TAC-CGG-AGT . What is the sequence of the complementary DNA strand ?

Answers

Answer: ATG-GCC-TCA

Explanation: A's pair with T's, C's pair with G's. In the complementary strand simply pair any T's with A's and vice verse and any C's with G's and vice verse

Put "Polygenic Traits" in a sentence

Answers

Answer:

Polygenic traits are controlled by a number of separate genes.

Hope it helps! :D

Answer:

Polygenic traits are controlled by a number of separate genes

Explanation:

Hope this helps

describe one way in which the body gets rid of lactic acid

Answers

Stretching can help stimulate circulation, increase flexibility, and relieve tension. This brings more oxygen to the muscles, which reduces lactic acid production

What concept suggests that small bacteria were engulfed by larger cells to become mitochondria and help to self flourish and become a eukaryotic cell

Answers

Answer:

Endosymbiotic theory

Explanation:

The concept that hypothesized that small bacteria were engulfed by larger cells to become the mitochondrion  and eventually become a eukaryotic cell is known as symbiogenesis or the endosymbiotic theory.

The endosymbiotic theory argues that organelles like mitochondrion and the chloroplast found in modern-day eukaryotic cells were formerly prokaryotic microbes. These microbes got ingested by primitive, amoeba-like eukaryotic cells that were first formed but instead of dying, the engulfed microbes found a way to symbiotically coexist with their hosts, eventually forming the organelles - aerobic microbes forming the mitochondrion and photosynthetic microbes formed the chloroplast.

Examples of decapods are​

Answers

Answer:

Crabs, lobster, shrimp, etc.

Explanation:

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An old scriptural passage asks: "who among you, if your children ask bread, will you give them a stone, or if they ask a fish, will you give them a serpent?"We might also ask: who among you, if your children ask for fish, will you give them a contaminated fish; if your children ask for water, will you give them unclean water? You see, protecting our water is one of the deepest obligations we have -- to ourselves, to our children, and to our future.What point of view does Gore convey in this excerpt?Gore believes that ______________A. people have an important ethical responsibility to keep water cleanB. effective environmental policy requires strong leadership above allC. clean water is a more pressing concern than clear air for most peopleD. people should be encouraged to share food and water with one another What are 3 reasons the Canterbury Tales are important? What is the Law ofConservation of Mass?A. 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What is the normal cost of each decal without the deal? According to the excerpt, what is something Barack Obama says about the state of education in America? A basketball player's chance of scoring a free throw is estimated to be 25. The player tries 20 shots and the number of baskets is recorded. This event is a binomial experiment becauseA. there are only two outcomes; the number of trials is not fixed; the probability is the same for each trial; the trails are independent of each other.B. there are only two outcomes; the number of trials are fixed; the probability is not the same for each trial; the trails are independent of each other.C. there are only two outcomes; the number of trials are fixed; the probability is the same for each trial; the trails are independent of each other.D. there is only one outcome; the number of trials are fixed; the probability is not the same for each trial; the trails are independent of each other. How much more does the cat eat than the parrot? The Parrot eats 3/8 pounds of food, and the cat eats 7/8 pounds of food. Write and solve an equation to represent the problem? Marcus, a resident of Vermont, decides to sue the maker of CalmDown in a Vermont state court. He is permitted by the court to serve the company by email, as he cannot find an address for the company and convinces the judge that email would be the best way to accomplish service. The maker of CalmDown responds to the service claiming that Vermont courts have no jurisdiction over the business, because it is an out-of-state defendant with its principle place of business in Alaska. Moreover, they have never marketed their product in Vermont and only sold a few subscriptions before it removed the app from the app store. Is it appropriate for a Vermont court to exercise jurisdiction in this case? Why or why not?PLS HELP THXS! WILL GIVE BRAINLIEST! NO SPAM ANSWERS what is your favorite game? Only one of the following statements about the trade surplus is correct. 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