Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. A physical change doesn’t break the bonds between atoms of a substance or form new ones. Compounds can be broken down by a chemical change. A chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. What simple substance would a compound break into? The basic elements that make it up! For example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. Which of the following is an example of a chemical change?

A
separating water into different glasses

B
breaking frozen ice cubes with a hammer

C
running an electric current through water

D
boiling water to evaporate it on a stove

Answers

Answer 1

Answer:

c

Explanation:

covalent bond and hydrogen bond

Answer 2

Answer:

C because

Explanation:

covalent bond and hydrogen bond Are both present Here so that will be your answer


Related Questions

Please Help now! Thanks!

Answers

Answer:

A

Explanation:

I'm pretty sure it's A because fish = fish feces which = nutrients.

Answer:

D

Explanation:

"Making whales a protected species to increase the whale population."  This is the correct answer because more whales means more recycled nutrients.  Therefore, by protecting whales, more whales will play a role in the process of the "Whale Pump".

Xavier drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis.


Which label belongs in the area marked X?

Enters plant as a part of water
Combines with carbon dioxide
Is released into air through stomata
Is stored in leaves for later use

Answers

Answer:

The corret answer is c

Explanation:

The answer is c ur welcome

Which is an example of a functional adaption?
A. a brightly colored butterfly
B. birds flying south in the fall
C. the spray of a skunk
D. thorns on a rose

Answers

Answer:

thorns on a rose

Explanation:

because they serve the function of protection

Fill in the Blank:

Word Bank:
Decreases, Increases, Daughter, Replicates, Surface Area, Translates

As a body cell grows, the ratio of _______ to volume _________. Before it grows to large, a cell will divide into two ________ cells. So that each new cell receives its own genetic instructions, the cell ________ or copies, all of its DNA.

Answers

Answer: As a body cell grows, the ratio of SURFACE AREA to volume INCREASES. Before it grows to large, a cell will divide into two DAUGHTER cells. So that each new cell receives its own genetic instructions, the cell REPLICATES or copies, all of its DNA.

Explanation:

As a body cell grows, the ratio of surface area to volume decreases. Before it grows to large, a cell will divide into two daughter cells. So that each new cell receives its own genetic instructions, the cell replicates or copies, all of its DNA.

The volume of a growing cell increases at a larger pace than the surface area. Hence the ratio of the surface area to the volume of the cell keeps decreasing. At a certain point, the signal to divide is given and this leads to the division of the cell into two daughter cells.

Just before the division, the genetic material of the cell is replicated and other important biomolecules are synthesized before the final call can be made.

More on the cell cycle can be found here: https://brainly.com/question/25282664?referrer=searchResults

Is the classification system of domains and kingdoms the only system that scientists have ever used to classify organisms?

Answers

No there are three distinct domination

No, the classification system of domains and kingdoms is not the only system that scientists have used to classify organisms.

What is a classification process?

The classification of living organisms has been a continuous process since the time of Aristotle, and scientists have used various systems over time to classify organisms.

Prior to the current system, scientists used a five-kingdom classification system that classified organisms into Monera, Protista, Fungi, Plantae, and Animalia. However, advances in molecular biology and genetics led to the realization that this system did not accurately reflect the evolutionary relationships among organisms.

The current classification system, which is based on three domains - Archaea, Bacteria, and Eukarya - was proposed in the late 1970s and early 1980s by Carl Woese and his colleagues.

Learn more about classification, here:

https://brainly.com/question/367189

#SPJ3

what organ system is affected? in albinism

Answers

hair, eyes, skin, and vision

Answer:hair, eyes, skin,and vision

Explanation:

its an interruption im the function of the enzyme tyrosinase

Which is an example of a sudden change that could lead to the extinction of species?
A. a mountain range isolates a species
B. Earth's tectonic plates move
C. a volcano erupts
D. sea level change

Answers

Answer:

D

Explanation:I think it is D

Answer:D

Explanation:

Right now a similar thing is happening by global warming which is leading to polar bears becoming extinct

Edit:Also B and C happen on a regular basis but rarely lead to the extinction of a species and A would lead to the evaluation of an isolated species

The water cycle is also called the Hydrolic Cycle.
It is the process by which water circulates between Earth’s oceans, atmosphere, and land.
It involves the following:
Water storage
evaporation
transpiration


_________________________
_________________________

_________________________ hold 96.5% of Earth’s water.
This is the primary pathway into the water cycle.
Oceans, seas, lakes, and rivers provide _____% of the moisture in our atmosphere through evaporation.

The process by which water changes from a _________________________ to a _________________________ .
It is the primary pathway that water moved from the liquid state back into the water cycle as _________________________ .
_________________________ (energy) from the sun is necessary for evaporation to occur.
Energy _________________________ bonds that hold water molecules together.
Boiling Point: _________________________
Freezing Point: __________________________
_________________________ is the process of snow and ice changing into water vapor without first melting into water.
_________________________ is water lost to the atmosphere when the ground surface and transpiration of groundwater by plants through leaves.

Superhighway used to transport water around the globe.
Involves _________________________ and _________________________ .

The process in which water vapor in the air changed into _________________________ .
The loss of _________________________ allows water molecules to bond,
Forms _________________________ or _________________________ .

Is water released from clouds in the form of:
_________________________
_________________________
_________________________
_________________________
_________________________
Provides the delivery system of _________________________ water to the Earth.

These are examples of water locked up in its present state of matter for a relatively long period of time.
This involves _________________________ and _________________________ .

This is _________________________ that did not get absorbed into soil, or evaporate.
_________________________ and _________________________ provides runoff when they melt._________________________
Water moved by _________________________ makes its way into places that collect water.
_________________________
_________________________
_________________________
_________________________

This is the downward process of moving water from the _________________________ into soil or poros rock.
_________________________ is large amounts of water stored in the ground.
_________________________ is another name for groundwater.


This is the area of land where all the water that dallas in it and grains off of, goes into the same place.
It can be as small as a footprint or as large as all the land that drains water into the _________________________ .

Answers

Answer:

The answer is water storage

Explanation:

The answer is water storage because water is managed, if water was not managed we will be walking in water instead of walking on grass.

Please Help!!!! Thank You! 15 points!

Answers

Okay what am I answering for you

Answer:

okay what is the question

what organ system is affected? in colorblindness

Answers

Answer: Nervous System

Explanation:

Due to nerve cells dying.

nervous system is the answer because the eyes connects to nerves and when ur colorblind it’s split or somehow messed up nerve.

Researchers have been studying how emissions from both volcanoes and human activities, such as the burning of fossil fuels, impact the atmosphere. Both types of emissions contribute to the total CO2 levels in the atmosphere. Graph 2 shows that atmospheric CO2 levels have been steadily increasing over time. This increase in CO2 levels has been linked to the increase in global surface temperatures.

Explain why the total mass of carbon must be decreasing in a different step of the slow carbon cycle based on the on the increase in atmospheric CO2.

Answers

Answer:

just look at the graph it literally tells you the answer

Smooth muscle _____.

is only found in the heart
appears to have stripes
controls involuntary actions
is also called skeletal muscle

Answers

Answer:

i think it is c

Explanation:

Answer:

its C

Explanation:

PLEASE HELP WILL GIVE BRAINLY AND POINT!!!!
A student at an exhibition looks at a model of Earth, as shown. The model is made using different colors to show water and land on the surface of Earth. The color green shows areas covered in land and blue shows areas covered in water. Each side of the model is shown.



The student learns that the water on Earth is stored in different forms. Water on Earth is broadly categorized into salt water and freshwater. The usability of water depends on the quantity available and its characteristics. The model shows the distribution of water on Earth in various reservoirs.

Question:The student claims there are large quantities of water immediately available for humans to drink on the surface of Earth. Is the claim given by the student correct? Use evidence from the graphs to describe why or why not.

Answers

I like your profile pic

Answer:

the claim given by the student is false. the diagram shows that 3% of the total water on earth is fresh water. All the other water would have to be filtered and made safe to drink.

Explanation:

How is the process of fertilization in animals like the process that takes place in plants?


Spores can become sperm that will fertilize the egg.


Self-fertilization is possible if no partner is available.


A sperm cell and an egg cell combine to form an embryo.


Sperm is encased in a grain of pollen to travel to an egg.

Answers

Answer:

Hope it helps :))

Explanation:

And i also hope you get it right ;))

The answer is C! A sperm cell an egg cell combine to form a embryo!

please please help!! i'm struggling,,

In what way does an earthquake provide evidence about the layers of Earth? Use complete sentences to write your answer.

Answers

Answer:

When an earthquake occurs the seismic waves (P and S waves) spread out in all directions through the Earth's interior. Seismic stations located at increasing distances from the earthquake epicenter will record seismic waves that have traveled through increasing depths in the Earth.

Explanation:

HURRY I WILL GIVE BRAINLEST JUST PLS HURRY IM ON MY FINALS EXAM!!!!!!

Which scientist most inspired Darwin to pursue his studies of evolution?

A. Linnaeus, who first proposed that humans and primates are similar
B. Malthus, who thought that populations could outgrow their food sources
C. Linnaeus, who thought that populations could outgrow their food sources
D. Malthus, who first proposed that humans and primates are similar

Answers

Answer:

B. Malthus, who thought that populations could outgrow their food sources

Explanation:

Thomas Malthussssssss

is albinism a dominant or recessive trait? Explain your answer.

Answers

Answer:

albinism is a recessive trait.

Explanation:

In order to have the genetic mutation, you must have two of the gene for it to be present. However, if you only have one of the genes, you are a carrier for said mutation.

hope this helped :)

What were key documents referenced in the establishing Arizona Statehood?

Answers

they established a territorial government for new mexico from the september 9
Territorial gov of New Mexico

7th grade science need help

Answers

Answer:

The answer is B

Explanation:

the answer i believe is probably B

Which is NOT an example of a structural adaption?
A. a pelican's pouch-like beak
B. Camouflaged seahorses
C. The migration of birds
D. dense fur on a brown bear

Answers

Answer:

D

Explanation:

Your sooo wellcome Honey

D) dense fur on a brown bar

Do you think that humans and humpback whales share a common evolutionary lineage?

Answers

Answer:

Yes!

Explanation:

Yes because when it comes to whales and humans we have a lot in common. They have different behaviors and languages within their own culture as humans do.They come in a lot of sizes and have different behaviors. Just like us and they are also mammals. While other sea creatures have gills.

Answer:

Scientists have used computer analysis to read evolution backward and reconstruct a large part of the genome of an 80-million-year-old mammal. This tiny shrewlike creature was the common ancestor of humans and other living mammals as diverse as horses, bats, tigers and whales.

Explanation:

Use two words to describe each rock type.

Answers

Igneous: Crystal rock

Metamorphic rock: Changing rock

Sedimentary: Sediment deposited

Does this work? lol

Have a blessed day!! :))

rock in the ground that sitting in the ground

HELP ME PLZ- I HATE SKOOL >:((

Answers

l hate school toooooooo:(
Beach mice:
Since the beach mice live in the beach (obviously) that is their ecosystem. This means that there are predators that eat the mice on the beach.

Let us assume that the mice in the beach have been isolated from the other deer mice and therefore could not reproduce with them

It comes down to survival of the fittest. The mice with the lightest fur survived because they blended in with their environment and avoided predators, so they reproduced and created more “light coat” offspring. Each generation the mice with the light coats were able to escape predation and reproduce. Therefore it is reasonable that the two mice have different genes that code for their fur colour.

The forest mice need a darker fur to blend in with their environment to avoid predation, so they’re fur stayed darker over the generations for the same reasons listed above ( vice versa of course )

Pls help i will mark brainliest!
Describe rock formation and make sure to use vocabulary

Answers

Answer:

Rock formation is an isolated, scenic, or spectacular surfure rock outcrop. Rock formation usually is the result of weathering and erosion sculpting of an existing rock. The term rock formation can also refer as specific sedimentary strata or other rock unit in stratigraphic and pathologic studies.

Hope this helps!!!

salivary glands release a liquid called saliva, which helps to break food down.

1. mechanical
2. chemical

Answers

Answer:

2. chemical

Explanation:

it would be 2, chemical:)

arious impairments of the mind are commonly associated with old age. To what extent are these biological in origin? To what extent, social in origin?

Answers

Answer:

When you begin getting old, matters inside your frame begins off revolved shutting down, like memory, resistance to sickness, etc. The bulk changed into born with all of this stuff running very well. We felt top and lifestyles changed into a pleasure. But while you attain 70' matters begin to end running and could retain to accomplish that until you die. Some human beings stay longer than others and their frame appears to keep collectively loads better. But we can all die one day.

Explanation:

brailist

Answer:

When you begin getting old, matters inside your frame begins off revolved shutting down, like memory, resistance to sickness, etc. The bulk changed into born with all of this stuff running very well. We felt top and lifestyles changed into a pleasure. But while you attain 70' matters begin to end running and could retain to accomplish that until you die. Some human beings stay longer than others and their frame appears to keep collectively loads better. But we can all die one day.

Explanation:please

add me

The temperature of the water in Glass A is 90°C. The temperature of the water in Glass B is 30°C. When each is poured into a container of water which is 60°C, which of the following statements is most likely to occur?

A. Water from Glass A will sink to the bottom while water from Glass B will sink.
B. Water from Glass A will rise to the top while water from Glass B will sink.
C. Water from Glass A will sink to the bottom while water from Glass B will rise.
D. Water from Glass B will rise to the top while water from Glass A will rise.

Answers

b because heat rises

Instructions: Write a new argument that supports the sub claim you chose above. This argument will be the second part of the press release, so make sure it is clear and convincing. • Include evidence and explain how this evidence supports this sub claim. • Look back at your work from this lesson. • You may also want to use the Argumentation Sentence Starters for help with organizing your thinking and constructing your argument.

The subclaim is; Bacteria from the fecal transplant can help the patient’s body produce immune cells that kill invading bacteria.

Answers

Answer:if you raise the points to 25 i will do everything with evidence etc.

Explanation:

Plzz help
Acquired mutations _____.
only occur in sperm cells
can be caused by radiation
are inherited
only occur in egg cells

Answers

Can be caused by radiation.

Answer:

can be caused by radiation

Explanation:

Calculate the ratio of H+ ions to OH– ions at a pH = 7. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide. Then divide the H+ concentration by the OH– concentration. Record this calculated ratio in Table A of your Student Guide.

Compare your approximated and calculated ratios of H+ ions to OH– ions at a pH = 7. Are they the same? Why or why not? Record your comparison in Table A.

What is the concentration of H+ ions at a pH = 7?

mol/L

What is the concentration of OH– ions at a pH = 7?

mol/L

What is the ratio of H+ ions to OH– ions at a pH = 7?

:1

Answers

Answer:

1:1

Explanation:

What is the concentration of H+ ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the concentration of OH– ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the ratio of H+ ions to OH– ions at a pH = 7?  

1 :1

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explain the quote in your own words. When men are at war, there is no new business, nonavigation, nor trade; no big buildings, no knowledge ofthe face of the earth; no account of time; no arts; noletters; no society. ATP is to your cells as ______ is to a car Why was Britain attacking American ships? The length of a rectangle is 3 inches less than its width the area of the rectangle is 18 in. what are the dimensions of the rectangle Which force is always pulling but never pushes and is directly influenced by mass Put the following steps in order:1. Calcium binds to troponin3. Myosin head is release from actin5. Electrical impulse (action potential) issend to sarcoplasmic reticulum7. Myosin heads are bound to actin9. ATP binds to myosin head2.Sarcoplasmic reticulum releases calcium4. Motor neuron action potential is signaled6. Tropomyosin moves exposing the activebinding site8. Acetylcholine is release10. power stroke/contraction 16.5 6.67 - 4.67 16.5 Central idea on the excerpt first blood PLEASE HELP!!Explain how the Zhou Dynasty fell. Describing the Purpose of a Line GraphMagnitude 6.8 - 6.9Which type of information could be displayed using thisline graph?Earthquake Number210,20019018017016015014013012011010090O a comparison of how frequently earthquakes occurin different areas over a period of timethe percentage of grades obtained by one class ona certain testthe physical features of a given land massO the number of students in one class in a localschool80701970 1975 1980 1985 1990 1995 2000 20052010DateIntroDone GIVING BRAINLISTWhat type of alliance is the European Union?A) only economicB) only politicalC) political and socialD) political and economic Solve the system of linear equations by multiplying.{2x + 2y =4{4x + 8y =24 Can someone rewrite the following equation into slope-intercept form ? 6x-7y=3 look at the picture! PLEASE I NEED IT NOWThanks. factor the expression using the GCF 8x+20y= ( x+ y) Diana got 0.85 of the questions correct on her assessment. What fractionrepresents the amount of questions she got incorrect? One important action that communities can take to help protect the public from communicable diseases is to provide farmers with safe, clean water for watering crops. Please select the best answer from the choices provided. T F Rewrite the division problem as multiplication: What is the slope of the line that passes through the points E(5, 1) and F(2-7)?12 Points) What conclusion can be drawn about how Alec viewsthe people who "walk among the stars"?Read the passage from The Phantom Tollbooth."Does everyone here grow the way you do?" puffed Milo when he had caught up."Almost everyone," replied Alec, and then he stopped amoment and thought. "Now and then, though, someonedoes begin to grow differently. Instead of down, his feetgrow up toward the sky. But we do our best todiscourage awkward things like that.""What happens to them?" insisted Milo."Oddly enough, they often grow ten times the size ofeveryone else," said Alec thoughtfully, "and I've heardthat they walk among the stars." And with that heskipped off once again toward the waiting woodsO He is jealous of them.O He is afraid of them.O He is inspired by them.O He is unimpressed by them.