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

What are the answers for questions 4 and 5?

Answers

Answer:

4. D (enzymes 1 and 3 works equally well in an acidic and alkaline environment respectively)

5. C. 2; 7; 9.5

Explanation:

The image attached to this question shows a graphical representation of the pH ranges for three enzymes. According to the image;

- Enzyme 1 reached its peak reaction rate at pH 2 (acidic)

- Enzyme 2 reached its peak reaction rate at pH 7 (neutral)

- Enzyme 3 reached its peak reaction rate at pH 9.5 (basic)

This result means that enzymes 1, 2 and 3 will work well and effectively at an acidic, neutral and alkaline environment respectively. Likewise, the optimal pH level for enzymes 1, 2 and 3 are 2; 7; and 9.5 respectively.

Need help on this *URGENT*

Answers

answer : divergent - the arrows show that the plates are moving apart.

When you buy strawberry why does "TASTE" matter? Please helppp

Answers

Taste matters because you have to enjoy the strawberry when you eat it. Unripen strawberries are very sour and are not appealing to taste. You would have a difficult time eating a sour or rotten strawberry. That is why taste matters.

PHET Energy Skate Park Simulation .Consider this equation: gravitational potential energy = mgh. Which of those variables is changing as the skater moves up and down the track?

Answers

Answer:

h - height

Explanation:

gravitational potential energy = m * g * h

m stands for mass. Mass doesn't change in physics

g stands for gravitational acceleration. It is a constant.

h stands for height. When the skater moves up and down the track the height from the ground changes. Therefore this variable does change.

In the equation gravitational potential energy = mgh, the variable that is changing as the skater moves up and down the track is the variable h, which represents the height or vertical position of the skater.

As the skater moves up the track, the height increases, resulting in a higher value for h. Conversely, as the skater moves down the track, the height decreases, leading to a lower value for h.

The other variables in the equation, m (mass) and g (acceleration due to gravity), typically remain constant unless specified otherwise. Therefore, the changing variable in this equation as the skater moves up and down the track is the height (h).

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air passes from the nose into the bronchi true or false?

Answers

Answer:

True

Explanation:

The right lung has 3 sections called lobes and is a little larger than the left lung, which has 2 lobes. The bronchial tubes divide into smaller air passages called bronchi. The functioning of the lungs is discussed in detail.

What objects in the solar system are larger than earth

Answers

Answer:

the sun, jupiter, saturn, uranus, neptune

Explanation:

3. What might happen to the ecosystem if this population were removed?

Answers

Answer:

More predators kill more prey, which, along with food scarcity, decreases the population.

Explanation:

Answer: ''Population Explosions The most obvious result of the removal of the top predators in an ecosystem is a population explosion in the prey species. ''

Explanation:

Can someone please help me please

Answers

Answer:

I think so answer is D

Explanation:

I hope it helps you

Pl Mark brainlist answer

Can hydrogen peroxide be broken down by catalysts other than those found in a living system? What is/are the control(s) and why are they needed?

Answers

Answer:

hi I not talk spanish

Explanation:

not talk spanish

Mendel’s observations of pea plants started the field of ?
A. Probability
B. Genetics
C. Biology

Answers

The answer is: B) Genetics

Hey My Name is Chloe, and I need some Help, But if you can't it's ok,

So I need Some Facts and Topics on Land Animals, I did some research But I didn't find enough. Any Is fine

Answers

Answer: CHIMPANZEES. RECKONED to be the most-intelligent animals on the planet, chimps can manipulate the environment and their surroundings to help themselves and their community. They can work out how to use things as tools to get things done faster, and they have outsmarted people many a time.

Explanation:

Answer: Animal: Bengal tigers

Topics: Why are bengal tigers being hunted? How many bengal tigers are left in the world?  Are bengal tigers being bred in captivity.

Facts:The White Tiger is one of the rarer relatives of the big cats. Due to their white coat they are often referred to as the bleached tiger. White Tigers are in fact a subspecies of Tigers and are the pigmented variation of the Bengal Tiger, sometimes found in the wild on the Indian subcontinent.

Explanation: I would suggest looking at national geographic if you want cooler animals.

Project: Earths layers

Answers

Answer:

here hope helps

Explanation:

Ribosomes assemble proteins from___?
DNA
amino acids
mitochondria
cytoplasm

Answers

Answer:

Amino acids.

Explanation:

Cytoplasm, the final stages of assembly occur in the cytoplasm of the cell

Describe a grassland ecosystem briefly.​

Answers

A grassland is a biome, an area of land that mostly has grasses. There are wild grasses, and there may be some trees. Several parts of the world have grasslands. Grasslands are found in Africa, North America, Central Asia, South America, and near the coasts of Australia.

An area where the vegetation is dominated by grasses and other herbaceous (non-woody) plants, few to little or no trees.

What determines the amount of biomass a given trophic level can
support? *

Answers

Explanation:

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What is the scientific definition of a wave?

Answers

Answer:

Waves involve the transport of energy without the transport of matter. In conclusion, a wave can be described as a disturbance that travels through a medium, transporting energy from one location (its source) to another location without transporting matter.

I hope it's helpful!

Waves involve the transport of energy without the transport of matter. In conclusion, a wave can be described as a disturbance that travels through a medium, transporting energy from one location (its source) to another location without transporting matter.

A small primate is observed in South America. It has a prehensile tail, spends most of its time in the trees, and is fairly small. What type of primate is it? HighLighter PopupUnderline Selected TextGreen Color HighlightOrange Color HighlightYellow Color HighlightBlue Color HighlightPink Color HighlightRemove Color Highlight A. Lemur B. Tarsier C. New World monkey D. Old World monkey

Answers

Answer:

C

Explanation:yeah

The correct answer is New World monkey as is observed in South America. It has a prehensile tail, spends most of its time in the trees, and is fairly small.

On one hand, a few species of New World monkeys own prehensile tails, which means they are able to use their tails to understand or maintain directly to objects (2). Their tails can resource those monkeys in locating and consuming meals withinside the cover in addition to transferring among the trees, as their tails offer greater help and balance.

The formal time period for the taxonomic organization containing all of the New World Monkeys (NWMs) is Platyrrhini. The NWMs diverged from the Old World monkeys and apes (Catarrhini) round forty million years ago (Perelman et al. 2011). Ancestral species are idea to have migrated to the Americas on rafts of plants or through island hopping (Fleagle 2013). The extant species of NWMs are presently labeled into 5 families, twenty genera, 156 species, and 204 taxa. However, the taxonomy of numerous taxa is debated withinside the literature and, therefore, this type is concern to change.

What is the New World monkey living area?

Many of the monkeys scampering across the forests of Central and South America have some thing unique on their butts-- a further hand. Well, now no longer exactly. It's a prehensile tail-- a greedy appendage that enables the animals navigate the tall and treacherous cover on the lookout for end result and leaves .

Hence concluded that the New World monkey have a prehensile tail, spends most of its time in the trees, and is fairly small.

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Each of the following is a density-dependent limiting factor EXCEPT:

- crowding
- predation
- competition
- disease

Answers

Answer:

predation

Explanation:

predation

I hop this answer is correct

Answer:

Disease

Explanation:

A student knows the width and
length of a dresser. What else
should she measure so she can
calculate the volume?
A. Mass
B. Density
C. Height

Answers

Answer:

C. Height

Explanation:

The volume of a rectangle is Length x width x height.

The student has only measured the width and length so far, the only thing left to measure is the height.

The other answers don't make sense.

Hope this helps!!

- Kay :)

Answer:

c

Explanation:

Please help!
..........​

Answers

Answer:

我期望1个是正确的答案 并问老师好

Explanation:

你可以在书中找到

Which of the following most accurately describes the National Postsecondary Agricultural Student Organization?
(a)A rival group to FFA.
(b)2.A group similar to FFA but for graduate students.
(c)A group similar to FFA but for college students.
(d)The British version of FFA.

Answers

Answer:

Explanation:

a

Answer:

It's a

Explanation:

Why is natural selection not random

Answers

Answer : because natural selection helps certain animals to adapt to their current environment

Explanation:

11)
How are genetic mutations passed from parent to offspring?

Answers

Answer:

Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation. There are also nonhereditary mutations that occur in cells outside of the germ line, which are called somatic mutations.

I hope it's helpful!

Answer:

★ Mutated gametes (sex cells) fuse to create offspring.

Genetic mutations or germline mutations can be defined as a permanent change in the DNA sequence of germ cells (cells, which form ovum and sperm). These mutations can pass from one generation to other when a mutated sperm or mutated oocyte (gametes) get fertilized with another oocyte or sperm.

A germline mutation, present in a single-celled zygote will present in all cells of a muticellular organism, a single-celled zygote divides and produces all of the cells in that organism.  

Explanation:

Hope you have a great day :)

2. Which hormone stimulates the removal of sugar from the blood?
a. Glucose
b. Insulin
c. Glycogen
d. Glucagon

Answers

Answer:

Glucagon

Explanation:

Glucagon works along with the hormone insulin to control blood sugar levels and keep them within set levels. Glucagon is released to stop blood sugar levels dropping too low (hypoglycaemia), while insulin is released to stop blood sugar levels rising too high (hyperglycaemia).

What describes the conversion of ADP to ATP?

Answers

Answer:

ATP stands for adenosine triphosphate, where three phosphoric acids attach themselves to provide high energy phosphate groups to it. This process of conversion of ADP to ATP is called as phosphorylation.

Explanation:

What are created during the process of translation?

Answers

Answer:

a gene expression

Explanation:

and

Explain why society has been developing different renewable resources in favor of
nonrenewable resources in the past few decades.

Answers

Answer: Society has been developing different renewable resources in favor of nonrenewable sources in the past decades because natural gas and oil has been used to much that we are running out of nonrenewable sources. So society has been trying to use solar panels, wind panels, and water.  

Explanation:

__________ is also known as zero waste.
A)
Particulate control
B)
Integrated Waste Management (IWM)
C)
Monitoring
D)
Industrial ecology
E)
Environmental justice

Answers

Answer:Option B I think

Zero Waste: The conservation of all resources by means of responsible production, consumption, reuse, and recovery of products, packaging, and materials without burning and with no discharges to land, water, or air that threaten the environment or human health.”

I believe the correct option is B. Integrated Waste Management (IWM)

Which of the following is linked to an increase in brain size and intelligence in
hominids?

O Increased speed and strength

O Increased social interactions

O Decreased use of tools and language

O Development of more complex and tools and language

HURRY PLEASE IM TIMED!!!!!

Answers

Answer:

D

Explanation:

The Answer is the Development of more complex tools and language

When The evolution of human intelligence is closely tied to the evolution of the human brain and also that to the origin of language.When larger brain size and also that volume is associated with better cognitive functioning and higher intelligence. Although when The specific regions that show the most robust correlation between volume and also that intelligence are the frontal, temporal, and also parietal lobes of the brain.

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Gregor Mendel, a 19th century monk, used pea plants to arrive at several conclusions
about how traits are passed on to offspring. One conclusion became known as the Law of
Segregation. The illustration below shows how this law operates.
Parent 1
Parent 2
Offspring 1 Offspring 2 Offspring 3 Offspring 4
Which conclusion can you make based on Mendel's work as shown in the diagram?
Parent 1 has the dominant trait
Parent 2 has the dominant trait.
The offspring inherit traits only from Parent 1.
The offspring will not pass on the trait, inherited from Parent 2, to their offspring.

Answers

Answer:

I think the answer is parent one has to dominant off string since it looks more like them since they might they might have better geans

Answer:

Parent 1 has the dominant trait

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