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When a substance shifts from one state of matter to another without changing its molecular composition, it undergoes a chemical change.

True
False

Answers

Answer 1

Answer:

false

Explanation:

because I have don't get be few job days people and of will am to a on in the next time we come in for our meeting tomorrow morning to get some the information on how we will be working with our current client on our own so I don't am the a to make do I get have job that I am not going the the process best I I'm you me the chain

Answer 2

Answer:

no it's false.

since chemical change require change in chemical composition of a substance

and mostly a new substance is formed during a chemical change .

and here no such thing is observed so it's not a chemical change


Related Questions

Please answer the questions

Answers

No yendo ni idea de lovqu es

7.
Mammals have a double circulatory system Blood flows between
the heart and the lungs
the heart and the rest of the body (systemic circulation),
(a) Fig. 7.1 shows a cross-section of an artery.
Fig. 7.1
Explain how the structure of an artery, as shown in Fig. 7.1. is related to its functions.

Answers

Answer:

The artery has a thick membrane to prevent nutrients and oxygen in the blood from being lost while transported.

The blood thick membrane to help reduce the pressure the blood following in it is coming with.

ells go through periods of growth and division. Cell division occurs during

Answers

Mitosis is when the cell divides

Calculate the number of moles in 15.8 g of Fe.
Express the number of moles to three significant figures.

Answers

Answer:

им putins брат, почему вы обманываете нашу систему образования, Это теперь запрещено в России.

14.
A scientist places a cell in a solution, and over time
the cell gains mass and swells. What is the most
likely explanation for the cell's gain in mass?
A. The solution is hypertonic to the cell.
B. The solution is hypotonic to the cell.
C. The solution and the cell have equal
concentrations of solutes.
D. The solution and the cell have equal
concentrations of water.
Ο Α.
B
С
D
Skip
Previous
Next
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Answers

The solution is hypotonic to the cell

An Inflammatory response typically includes: Group of answer choices increased activity of phagocytes in an inflamed area inhibiting the release of white blood cells from bone marrow release of substances to decrease the blood supply to an inflamed area reduced permeability of blood vessels to conserve plasma

Answers

Answer:

increased activity of phagocytes in an inflamed area

Explanation:

An inflammatory response is the way the body defends itself against attacks by microbes, physical or chemical agents. In other words, this is how organisms defend and inhibit damage from attacks. The inflammatory response allows high phagocyte activities in the inflamed area. Phagocytes are immunity-related cells that attack foreign and invasive substances, bacteria and dead cells.

this is due in 50 minutes

Answers

Answer:

It should have taken over 2500 million years. This is owing to many natural disasters as well as the rotation of the planet, which resulted in the separation of landscapes.

Explanation:

Certain species of blind fish living in perpetual darkness in the ocean depths have evolved from ancestors that could see. Research indicates that the brain centers for vision in these fish is degenerating, whereas the brain centers controlling other senses are enlarging. What might be the MOST probable reason for the loss of vision in these fish

Answers

Answer:

Explanation:

Evolution for lack of light. If there is no reason for it you lose the ability but it strengthens other senses. It's compensation. The need to tell if the temperature has increased because of something nearby or ability to feel miniscule movement will increase to compensate for that lack of sense.

what's a characteristic of a consumer (in science)

Answers

The characteristics of a consumer are to consume energy from and energy source

The R and S loci are 35 m.u. apart. If a plant of genotype is selfed, what progeny phenotypes will be seen and in what proportions

Answers

Complete question:

The R and S loci are 35 m.u. apart. If a plant of genotype RS/rs is selfed, what progeny phenotypes will be seen and in what proportions

Answer:

R-/S- = 0.6052 R-/ss = 0.1443rr/S- = 0.1443rr/ss = 0.1056

Explanation:

Available data:

R-S are 35 mu apartCross: RS/rs   x   RS/rs

First, we need to recognize the parental gametes and the recombinant ones.

Cross:

Parentals)     RS/rs    x      RS/rs

Gametes) RS  Parental   ⇒  Equal to the parental genotype

                 rs   Parental   ⇒  Equal to the parental genotype

                 Rs  Recombinant   ⇒  Product of recombination

                 rS   Recombinant   ⇒  Product of recombination

We know that genes are 35 MU apart from each other. The map unit is the distance between the pair of genes for which every 100 meiotic products, one of them results in a recombinant one.  

To calculate the recombination frequency, we have to know that 1% of recombinations = 1 map unit = 1cm. And that the maximum recombination frequency is always 50%.  

According to this information, if 1 MU = 1% recombination frequency, then

35MU --------- 35% recombination frequency = 0.35

Now, let us calculate the frequency of each gamete type.

35 map units = 35 % of recombination in total  

                      = % Rs + % rS  

                      = 17.5% Rs + 17.5% rS

Now, if the recombination frequency equals 35% then the parental frequency is 100% - 35% = 65%

65 % parental frequency = % of RS + % rs  

                                          = 32.5% RS + 32.5% rs

The frequency of each gamete is

RS  ⇒ Parental  ⇒  32.5% (65% / 2) = 0.325rs  ⇒ Parental ⇒ 32.5% (65% / 2) = 0.325Rs  ⇒ Recombinant  ⇒ 17.5% (35% / 2) = 0.175rS  ⇒  Recombinant ⇒  17.5% (35% / 2) = 0.175

F1 Genotypes and Proportions

RS/RS = 0.325 x 0.325 = 0.1056     RS/Rs = 2x 0.325 x 0.175 = 0.1137RS/rS = 2x 0.325 x 0.175 =0.1137   rs/rs = 0.325 x 0.325 = 0.10562rs/RS = 2x 0.325 x 0.325 = 0.2112rs/Rs = 2x 0.325 x 0.175 = 0.1137rs/rS = 2x 0.325 x 0.175 = 0.1137Rs/rS = 2x 0.175 x 0.175 = 0.061Rs/Rs = 0.175 x 0.175 = 0.0306rS/rS = 0.175 x 0.175 = 0.0306

F1 Phenotypes and Proportions

R-/S- = 0.1056 + 0.1137 + 0.1137 + 0.2112 + 0.061 = 0.6052 R-/ss = 0.1137 + 0.0306 = 0.1443rr/S- = 0.1137 + 0.0306 = 0.1443rr/ss = 0.1056

If R and S loci are 35 m.u. apart and a plant of genotype RS/rs is selfed, then the progeny phenotypes will be 0.606 RS; 0.106 rs; 0.144 Rs and 0.144 rS.

In this case, it is imperative to estimate gamete frequencies

RS = 0.65% / 2 = 0.325rs  = 0.65% / 2 = 0.325Rs  (recombinant) = 0.35 / 2 = 0.175rS (recombinant) = 0.35 / 2 = 0.175

In consequence, the F1 genotypes will be RS/RS = 0.1056  (i.e., 0.325 x 0.325); RS/Rs = 0.1137; RS/rS = 0.1137; rs/rs = 0.10562; rs/RS = 0.2112; rs/Rs = 0.1137; rs/rS = 0.1137; Rs/rS = 0.06; Rs/Rs = 0.0306; and rS/rS = 0.0306.

Finally, it is possible to obtain phenotypic frequencies by summing genotypic frequencies for each case in particular.

In conclusion, if R and S loci are 35 m.u. apart and a plant of genotype RS/rs is selfed, then the progeny phenotypes will be 0.606 RS; 0.106 rs; 0.144 Rs and 0.144 rS.

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Which types of waves are also called secondary waves

Answers

Answer:

Radio waves

Explanation:

kase mas mababa Ang secondary kesa sa tertiary

Scientists have determined that Earth's interior has layers with different properties. One property is that the inner core is solid. Which of the following statements can be used as evidence to support this property?
A.
During an earthquake, both P waves and S waves travel away from the focus through the interior of Earth.
B.
After an earthquake, P waves are detected on the opposite side of Earth but S waves are not.
C.
P waves do not refract based on the density of the medium it is traveling in, but S waves do.
D.
Seismographs that are far from the epicenter of an earthquake detect P waves much sooner than S waves.

Answers

Explanation:

During

an earth quake both p waves and s waves travel away from the focus

Answer:

B

Explanation:

B

Two Bio 45 students are having a disagreement about renal function. Dan says that the kidneys work harder when you eat a high-salt diet, whereas Peter says that they work harder when you drink lots of water.

Answers

The kidney works harder when you drink lots of water, no water = kidney failure.

The flying squirrel of North America closely resembles the flying phalanger of Australia. They are similar in size and have long, bushy tails and skin folds that allows them to glide though the air. The squirrel is a placental mammal, while the phalanger is a marsupial. These close resamblances, even though genetically and geographically separarted by great distances, can best be explained by

Answers

Answer:

This can be explained by convergent evolution.

Explanation:

The similarities between the two animals presented in the question above can be explained by means of convergent evolution. This type of evolution refers to living beings that have characteristics in common, even though they do not have the same point of origin, that is, even though they do not have a common ancestor. In this case, the similarities between these beings are not based on genetic inheritance, but were established through the influence of the environment in these two beings, which ended up changing in similar ways. Convergent evolution is created through natrual selection and environmental pressure on individuals, regardless of their genetic makeup.

Just like Earth, some of the planets in our solar system are also made of rock. Do you think the rocks on these planets transform?

Answers

Answer:

Yes.

Explanation:

Yes, I think the rocks on the planets transform which are closer to the earth such as Mercury, Venus, Earth, and Mars because of high temperature of the planets while on the other hand, the gas giants such as Jupiter, Saturn, Uranus, and Neptune have no transformation of rock due to their lower temperature of the environment as well as the soil so the rocks can't transform from one form to another form of rock.

Why is the burning of fossil fuels, which releases carbon dioxide into atmosphere, a concern to scientists

Answers

They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution. Extreme weather, food supply disruptions, and increased wildfires are other effects of climate change caused by greenhouse gases.

A scientist discovers a new organism and is trying to classify it. Which observations would most likely indicate that
the organism is an animal?

It is multicellular and can move itself from place to place,

It is heterotrophic and unicellular.

It makes food from sunlight and is eukaryotic.

It is prokaryotic and can move itself from place to place.

Answers

Answer:

B) It is heterotrophic and unicellular.

Hope This Helped!

Answer:

It is multicellular and can move itself from place to place.

Explanation:

i took the test the other answer is wrong

Brendan made a diagram to compare and contrast the benefits of two types of social behavior.

The diagram shows 2 overlapping circles labeled Flocking and Herding. There is a z in Herding.

Which description belongs in the area marked "Z"?

reproduction
protection
foraging
hydrodynamic efficiency
please help this is an exam and its timeddddd

Answers

Answer:

Which description belongs in the area marked Z? Protection.

Explanation:

Have a great summer.

Herding is refer to as the act of bringing individual animals together into a group, maintaining the group, and moving the group from place to place or any combination of those.  The description belongs in the area marked "Z" is foraging. Thus, the correct option is C.

What is flocking?

A flocking is refer to as the large number of birds, especially those gathered together for the purpose of migration.  For example, a large number of animals, especially sheep or goats kept together and migrate.

Foraging behavior includes all the methods by which an animal acquires and utilizes sources of energy and nutrients. This also includes the location and resources consumption, as well as their recapture and storage, within the context of the larger community.

For more information regarding foraging, refer:

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if the parents genotype are as given below:
mother:AA.Bb,CC,Dd,EE,Ff,Gg,HH Father:Aa,BB,CC,Dd,Ee,Ff,Gg,Hh

a) then what is the probability of having a child with the following genotype: AA,BB,CC,DD,Ee,ff,gg,Hh

Answers

Answer: a

Explanation:

NO LINKS OR ELSE YOU'LL BE REPORTED!Only answer if you're very good at science.

Why is a sound wave a mechanical wave?​

Answers

Answer:

a sound wave moves through air by displacing air particles in a chain reaction, sound energy is associated with vibrations created by a vibrating source, that requires a medium to travel, which makes sound energy a mechanical wave

Explanation:

hoPE that helped :)

Answer:

Mechanical waves move "things"...they require a medium (whose molecules are the "things") to transmit their energy. Sound uses air molecules most of the time. It can use water molecules as well.

Explanation:

how skin contributes to protection​

Answers

Answer:

Skin has a lot of different functions. It is a stable but flexible outer covering that acts as barrier, protecting your body from harmful things in the outside world such as moisture, the cold and sun rays, as well as germs and toxic substances.

hope this helps

have a good day :)

Explanation:


How does pH paper indicate the pH of a solution?
A. By turning a certain color
B. By changing the color of the solution
C. By causing a certain number of bubbles to form
D. By forming a number in the pH scale on the paper

Answers

By turning a certain color

anyone preparing for neet? how to score 630 in neet​

Answers

Answer:

im not but i would love to

Explanation:

so tell me in the comments how would you prepare for neet

How is waste (and the accumulation of it) not only harming wildlife, but ourselves?

Answers

Not many people knew about this, but many of our waste go back into the rivers and water companies collect that water and sell it back to us!
And it has recently been on the news that a pregnant woman had micro plastics found inside the umbilical cord! Everything we drink and eat, has an 100% chance of having mini micro plastics.

I need help, please help me

Answers

Answer:

False for both

Explanation:

In the first one you can see the red line has a greater slope. In the second you can see the yellow line acts as an outlier

Hope this helps

The word fossil means
something dug up
something died
something old
soemthing buried

Answers

The word fossil means something extremely old

the term "fossil" means something radically (extremely) old


The diagram shows three steps in the carbon cycle.
The Carbon Cycle

Which two phrases best summarize the events taking place in Step 2?

A. Cellular respiration

B. Storing carbon dioxide in living organisms

C. Photosynthesis

D. Releasing carbon dioxide into the atmosphere

Answers

Answer:

A. Cellular respiration

C. Photosynthesis

Explanation:

There are two main processes occurs in the carbon cycle i.e. cellular respiration and photosynthesis. Plants absorb carbondioxide gas from the atmosphere through small openings called stomata. The carbondioxide enters the leaves and combine with water produces glucose and oxygen. Glucose is stored in different parts of plant whereas some oxygen is used by the plant and the remaining oxygen is releases in the atmosphere while on the other hand, in cellular respiration, glucose is broken down to produce energy in the form of ATP, carbondioxide gas and water.

Answer:

The real answer is A and D.

What statement best explains the change over the 10 year period?

Answers

The birth rate increased

Neosporin is an antibacterial ointment used in the prevention and fighting of infection and in speeding the healing of wounds. Determine if this would be considered part of the first line of defense and which barrier category it would belong to. Explain your answers.

Answers

Answer:

Explanation:

The use of ointment for bacterial treatment does not fall into the first line of defence.

The first line of defence are physical (skin,tears, mucus) and chemical barriers( white blood cells also called neutrophils) which are prepared to defend the body against infection. The skin which is one of the first line of defence is a barrier that prevents entry of microorganisms the body. When the first mechanism is not effective especially for pathogens then the second mechanism is activated to get rid of the microorganism.

The use of ointment does not belong to any barrier or defence mechanism this is because it is not a natural way of getting rid of microorganisms within the body system.

What is the kinetic theory of matter? How does it relate to the motion of molecules?​

Answers

Explanation:

kinetic energy is energy that object has because of its motion .The kinetic molecules theory explain the forces between molecules and the energy that they possess. matter is composed of small particle's(atom,molecules,and icon)

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