The elephant toothpaste reaction and the reaction of sugar and sulfuric acid are examples of exothermic reactions. How do you know if an exothermic reaction has occurred?


HALP

Answers

Answer 1
heat, if some sort of heat is produced this would explain the reaction. i think lol
Answer 2

Answer:

Here at science made simple we are keen to inspire not only the next generation of scientists but also the next generation of science communicators. Supporting work experience students each year is an important part of what we do.  Our work experience students get a chance to see a range of the activities that science made simple is involved with and we always set them challenge to produce some science communication themselves, whether designing a demo, delivering a short presentation or, in this case, writing a blogpost that includes all of these!

We hope you enjoy this from one of our latest work experience students, Bilaal, we loved having him in the office and think he’s got a promising career ahead of him.

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This blogpost looks at two types of reactions: exothermic and endothermic. We’ll also be looking at reversible reactions– reactions in which the products can react to remake the original reactants. Plus, a great demonstration of an exothermic reaction.

Explanation:


Related Questions

.
Which statements best describe a temperate coniferous forest? (Select all that apply.)
They experience cool winters.
They are found in the Arctic.
They receive very little rainfall.
They have warm summers.

Answers

Answer:

They experience cool winters and

They have warm summers

Explanation:

The temperate evergreen (coniferous) forest has mild summers, cool to cold winters, and more precipitation than the taiga.

Temperate coniferous forest  experience cool winters and  have warm summers. Therefore, the correct options are option A,D.

What is temperate coniferous forest?

The World Wide Organization for Nature defines temperate coniferous woodland as a terrestrial biome. Temperate coniferous forests can be found mostly in locations with warm summers and chilly winters, and their plant life varies. Some are dominated by needleleaf trees, while others are dominated by broadleaf evergreen trees or perhaps a mixture of both tree species.

Temperate coniferous forests can be found along the coasts of places with moderate winters and copious rainfall, as well as inland in drier climes or montane locations. These woods are home to a variety of tree species, include pine, cedar, fir, among redwood. Temperate coniferous forest  experience cool winters and  have warm summers.

Therefore, the correct options are option A,D.

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Identify each type of disturbance

Answers

Half of the land sides to the right and the other too the left.

just wondering...
What is the most likely adaptation for a rabbit which once lived in the snow but now lives in shrubs and rocks due to increased global temperatures?

They will see an increase in fur production

They will become better swimmers

They will grow longer ears

Their coats will become darker due to natural selection

Answers

The fur will become darker just from elimination of unlikely answers

The most likely adaptation of a rabbit that moves from snow to shrubs and rocks would be a darker coat color due to natural selection.

What is adaptation?

It is the physiological and or morphological changes that occur in organisms that enable them to survive in their environments.

A rabbit that moves from living in the snow to living in shrubs and rocks does not need to produce more fur to survive as the temperature will be higher than in the snow.

Also, such a rabbit does not need to become a better swimmer since it is not living in the water. A longer ear also has no bearing in adapting it to its new environment.

A darker coat color, however, will conceal it from predators and give him a selection advantage.

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Which of the following happens when unbalanced forces act on a object?
A. the object remains stationary
B. the object moves with the same velocity
C. the object moves in the direction of the stronger Force.
D. the object speed and direction of motion remain unchanged.

Also please explain why too please I WILL GIVE BRAINLIEST!

Answers

Answer:

C.

Explanation:

The stronger force causes the object to move in the opposite direction, The object keeps the same speed though.

Can I get brainliest. PLEASE!

Answer:

i believe it is c

Explanation:

What causes the formation of mountain ranges along the ocean floor?
Sediment from rivers causes added sediments until mountains are formed.
Plate tectonics pulls the ocean floor apart and magma pushes up forming mountains.
Underwater volcanos erupt, creating underwater mountain chains.
Sedimentary rock is forced together forming mountain ranges.

Answers

i think it is plate tectonics pulls the ocean floor apart and magma pushes up forming mountains, please tell me if i’m wrong but i hope this helps
It’s the second answer

which velchie has the greatest acceleration as its enter the highway?

Answers

B because it is the lightest there for it should speed up faster
B I think I hope this helps

How was Aristotle’s model similar to Ptolemy’s model?

Both models stated that the planets rotate on their axes.
Both models stated that Earth is the center of the system around which other objects orbit.
Both models stated that the planets and objects in the solar system have small orbits called epicycles.
Both models stated that the Sun is the center of the system around which objects have elliptical orbits.

Answers

Answer:

Correct answer is B

Explanation:

I listened in class peeps

Aristotle’s model was similar to Ptolemy’s model because they both believed that: (B). Both models stated that Earth is the center of the system around which other objects orbit.

Meaning of a model

A model can be defined as a three dimensional representation of an idea or theory or belief.

A model can also  be said to be a representation of a philosophy or idea put up by an individual that can be used as an example.

In conclusion, Aristotle’s model was similar to Ptolemy’s model because they both believed that: (B). Both models stated that Earth is the center of the system around which other objects orbit.

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What is the difference between nuclear fission and nuclear fusion?

Answers

Answer:

Fission is the splitting of a large atom into two or more smaller ones. Fusion is the fusing of two or more lighter atoms into a larger one. Fission reaction does not normally occur in nature.

Explanation:

Quizlet

Answer:

Nuclear Fission: Is the splitting of the nucleus into two lighter nuclei.
Nuclear Fusion: Where two light nuclei combine to release energy.

Explanation: Thanks have a great day

(ZOOM IN TO SEE )plzzzz

Answers

Answer:

I think it might be A

Explanation:

I can barely read the options

Answer:

A

Explanation:

Newton's third law is "For every action, there is an equal and opposite reaction" In the case of this question, if an object is exerting a force that the second object will exert the same force in the opposite direction.

imagine that you live in a city near a large river you are part of a group that is studying the environmental impact of switching your City from fossil fuels to hydropower
which two issues are possible consequences that you should consider
A: harm to fish and other organisms in the river
B: danger to birds that live in your region
C: decrease in carbon dioxide production
D: toxic waste created by nuclear reactions

Answers

Answer:

C: decrease in carbon dioxide production A: harm to fish and other organisms in the river

Explanation:

CONTACT FORCES
The force applied by a magnet on an iron nail.
The force applied by a student on a door to open it.

NON-CONTACT FORCES
The force applied by an electromagnet on a wire.
The force applied by the planets on each other.

Which statement best explains why the table is incorrect?
A. Magnetic force is a force acting at a distance
B. The student applies a non-contact force on the door
C. Electromagnets use contact force
D. Gravitational force acts between planets only when they are in contact.​

Answers

C. Electromagnets use force

Answer:

C. Electromagnets use contact force

Hello! Could somebody please help? Thanks!! Will give brainliest and 38 points!!!
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Salinity of sea water is usually measured in parts per:

hundred
thousand
%
million

Answers

Answer:

thousands

Explanation:

here is why because think about it most oceans are measured by how much goes in it every day by the thousands of gallons of sea water so i hope this helps you understand your question

Answer: 35 parts per thousand.

Explanation: How much salt in a sea is measured in parts. So, meaning by that, it is measured by 35 parts per thousand. It's use as the grams of salt in the water, which is 1,000 grams of salt in water. 35 grams of salty water is equal to 1 kilogram of seawater.

The diagram shows different forms of thermal energy transfer.


What do the flames below the pot represent?

a
conduction
b
convection
c
insulation
d
radiation

Answers

Answer: my educated guess is  D. radiation

Answer:

b

Explanation:

I don't really need help but I'm putting it here just incase

Answers

Answer:

ok ig when u need help i'll help u

Explanation:

How can the environment affect population sizes?


My scientific explanation is:

Your answer should include at least six complete sentences to explain the claim, evidence and reasoning.
Be sure to check your grammar and spelling.

Answers

The environment affects the population such as people with lung diseases affect there overall health and may lead to death. Also, the way humans live affect global warming which could affect floods that would also lead to death. People with skin diseases are more likely to get sick or die from the global warming. Starvation take a huge factor on natural disasters. Second hand smoking into the lungs can create serious problems for people that are surrounded around people that smoke and have weak lungs and immune system.

It’s been answered by another person :)

What impact did the Spanish have on the region of South America?




In two to three sentences, include two examples of how the Spanish impacted the region of South America.

Answers

Answer:

The Spaniards practically went to war with the native Americans in South America, such as the Inca. They also brought diseases to South America. Diseases like smallpox.

Explanation:

Then after effectively killing off most of the native American population the Spanish continued to use South America for resources and they enslaved most of what was left of the non-Spanish and mixed populations. Francisco Pizarro took a page from Cortes' book, capturing Atahualpa, Emperor of the Inca, in 1532 and Cortes was the conquistador who defeated the Aztec Empire in what is now modern day Mexico or Central America.

Which graph would best represent the car

Answers

Answer:I think D

Explanation: it makes sence

D ;p

The reason is because the speed get higher than the car stops and then when it starts again the speed increases

If the load exerts a strong downward force, the glue

Answers

I think the awnser is a not sure though

Which sentence most accurately describes electrically charged objects?

They are attracted to one other without coming into contact.
They are negatively charged objects that are attracted to each other.
They attract or repel other charged objects without touching them.
They attract other objects after they have been in contact with them.

Answers

Answer:

They attract or repel other charged objects without touching them.

Explanation:

Charged objects have electrostatic forces of attraction. They are an example of non-contact forces that is, they exert a push or pull on other objects without touching them.

Which of these themes is common to both stories?
the importance of friendship
how unreliable magic is--you can’t count on it
power makes people behave badly

Answers

Answer:

uh

Explanation:

uh

Ndnddkdndndndndnenndndndnekekeke dkdkejeneje ieekkeekke elekekeke kekeneke ekekekek ekekeke

Use the dichotomous key to identify this animal.


Which animal is shown?


an orangutan

a lemur

a gibbon

a chimpanzee

Answers

Answer:

A lemur

Explanation:

It is because in the scale if it had a tail it went straight to lemur.

B will be your answer lemur

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What are some problems associated with the use of nuclear fission to supply energy needs?

Answers

Answer:

It is hard to spilt a nucleus.

possibly the biggest concern among nuclear energy advocates is the environmental impact of uranium as a fuel source. A typical nuclear power plant generates about 20 metric tons of used nuclear fuel per year. The problem is that this spending fuel is highly radioactive and potentially dangerous.

Explanation:

I hope this will help u

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The surface tension of isopropyl alcohol in air has a value of 22.39 units and
the surface tension of water in air is 72.86 units. Which two statements are
true?
A. Isopropyl alcohol will have a higher boiling point than water
because the forces between the molecules are greater.
B. Isopropyl alcohol will have a lower boiling point than water
because the forces between the molecules are smaller.
c. Isopropyl alcohol will have a more curved meniscus than water
because the forces between the molecules are greater.
D. Isopropyl alcohol will have a flatter meniscus than water because
the forces between the molecules are smaller.

Answers

Answer:

B. Isopropyl alcohol will have a lower boiling point than water

because the forces between the molecules are smaller.

D. Isopropyl alcohol will have a flatter meniscus than water because

the forces between the molecules are smaller.

Explanation:

Isopropyl alcohol will have a lower boiling point than water because the forces between the molecules are smaller. Isopropyl alcohol will have a flatter meniscus than water because the forces between the molecules are smaller. Hence, options B and D are correct.

What is surface tension?

Surface tension is the force that acts parallel along the surface of a liquid which in turn makes the surface of the liquid behaves like an elastic material.

Surface tension, as the name implies, acts on the surface of a liquid giving it some elastic properties; it is a product of the inherent properties of the molecules of the liquid.

For example, water possesses surface tension which is why when a pin or a needle is gently placed on the surface of the water it floats. Surface tension also accounts for the fact that some insects can walk on water.

Hence, options B and D are correct.

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Why were the Spanish interested in conquering Peru?


Write your response in one to two complete sentences.

The Spanish were interested in conquering Peru because _________________________________________________________________________

Answers

Answer:

531–1532 – Pizarro's third voyage to Peru. Spaniards form a bond with the Natives (Huancas, Chankas, Cañaris and Chachapoyas) who were under the oppression of the Inca Empire, and Pizarro includes them among his troops to face the Incas. Atahualpa is captured by Spanish.

Explanation:  Is this right ?

if it is please give thanks

Where are the most biodiverse ecosystems found on Earth?

How do you know this?

Answers

Amazonia represents the quintessence of biodiversity – the richest ecosystem on earth. Yet a study by Smithsonian scientists, published this week in the journal Science, shows that differences in species composition of tropical forests are greater over distance in Panama than in Amazonia.

You observe that the hair on your head stands up when a charged balloon is brought near without touching your head. Based on this observation, you write down the following question and steps to an experiment.

Can two charged objects be attracted to each other without touching?

Step #1: Bring the charged balloon 10 cm from your head.
Step #2: Charge the balloon by rubbing it against a cloth.
Step #3: Record your observation.
Step #4: Bring the charged balloon 5 cm from your head.
Step #5: Record your observation.

What revision could you make to improve the experiment?

Remove the fifth step, you do not need to make multiple observations in an experiment.
Reverse the first two steps so that you charge the balloon before you bring it close to your head.
Reverse the second and third steps so you record your observation before you charge the balloon.
Swap steps two and four, you do not need to charge the balloon until the end of the experiment.

Answers

Answer:

yes it can be attracted without touching The electric force is a non-contact force. Any charged object can exert this force upon other objects - both charged and uncharged objects.

Explanation:

Answer:

The answer is B! (Reverse the first two steps so that you charge the balloon before you bring it close to your head)

Explanation:

I did the exam and got it correct!

*PLEASE HELP WILL GIVE BRAINLIST!!*

Analyze the forces acting on the crate shown in the diagram. Explain why the crate will not move in the direction of the applied force. (Fapp.)

Answers

There are two forces, therefore the crate won’t move.

The crate will not move in the direction of the applied force because in the image there are two forces.

What is force ?

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Force is used to describe a body's tendency to modify or change its state as a result of an external cause. When force is applied, the body can also alter its size, shape, and direction.

Contact forces and act at a distance forces are the two different types of forces. Your daily use of force is evident. Basically, push and pull are forces. You exert force on an object when you push against it or pull against it.

Thus, The crate will not move in the direction of the applied force because in the image there are two forces.

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Wannabe friends
What is the formula for magnesium and chlorine

Answers

MgCl2 Good luck!!!!
The answer is MgC12

Which statement describes the role of consumers in an ecosystem?

A.
Consumers make their own food.

B.
Consumers eat only decomposers.

C.
Consumers provide food for producers.

D.
Consumers provide food for other consumers.

Answers

Either C or D. Those r the answers that make more sense.
d is the correct answer

What type of relationship is pollination of flowers?


Tell which type of relationship it is: mutualism, predation, parasitism, competition, or commensalism. Give details on why.

I think that animals pollinating flowers is an example of....

I know this because.

Answers

Answer:

The bee is getting nectar from the flowers which allows it to feed the hive, and in the exchange, the bee carries the pollen and helps reproduce flowers. This is a win-win for the bees and flowers, which is mutualism.

Explanation:

the answer is self explainatory, good luck!

Other Questions
Which characteristic is used to classify metamorphic rocks as foliated or non-foliated? I need help with #14 & #15 quickly! [Simplifying monomials] I will give brainliest if it is correct.Random answers will be reported! Find the components of the vector v with initial point P and terminal point Q. Find the unit vector u in the direction of v. a. P: (1,1,0), Q: (6,2,0)b. P: (1,1,1), Q: (2,2,0) What are the Elements Of Art's please help !!1 basic qualities of art2 the rules for arranging the Elements of art3 all of the above4 none of the above what reasons did Britain issued the Proclamation of 1763? Choose 2 correct answers 1. Britain did not want to have to protect settlers who wanted to move west of the Appalachian Mountains 2. The land belonged to France, therefore it was illegal for English colonist to settle the land. 3. The British government could more easily control and tax the colonists if they lived east of the mountain range. 4. The native people asked that the British not allow their colonist to encroach on their lands. 5. The French government signed a treaty with the British that allowed them to police that land. What type of power is given to congress in the last clause of article I section 8? 1 Which of the following describes the impact of a sound device that thepoet uses in the Barbara Frietchie poem (paragraph 6)?A The repetition of the sound at the end of bravest and thebeginning of town stresses the importance of these words.B The rhyming words at the end of each pair of lines tie the linestogether and cause the lines to flow in a musical way.C The repetition of the word up in the first and fourth lines showsthat Barbara Frietchie's bravery made the town look up to her.D The similar sounds in the words Frietchie and flag call attention tothe connection between Barbara Frietchie and her heroic deed. When does a chemical bond form between two atoms? Select one : O a. When attractive forces are greater than repulsive forces. O b. When potential energy is lowest for the pair. O c. When potential energy is greatest for the pair . O d. When repulsive forces are greater than attractive forces. (-1/4x-2/3)-(1/2x+1/6) show work no troll answers mark brainlest. write a summary of Sweet Land of Conformity? Multiple ChoiceFind the area of the trapezoid,14 mm15 mm36 mmO A. 270 mm? 1. What do the letters suggest about Oreste Solas reason for immigrating to Argentina? 2. How do Oreste Solas experiences in Argentina reflect a degree of continuity in his life and future prospects? 3. How do Oreste Solas experiences in Argentina reflect a degree of change in his life and future prospects? 4. What larger economic and historical contexts surround Oreste Solas experiences in Argentina? 5. How do the experiences that Oreste Sola describes in his letters fit into the larger global changes that occurred in the late 19th and early 20th centuries? Part 2: Responding to a Short Writing PromptRead the letters from Italian immigrant Oreste Sola in the Worlds of History student reader on pages 83643. Then, write a one-paragraph response to the following prompt. The paragraph must include a claim/thesis, contextualization, and at least five pieces of reasoning and evidence in support of the claim/thesis.Prompt:Evaluate the extent to which the letters from Oreste Sola reflect both continuity and change. 3. The author mentions the stick bug in order to....... * The popularity of Walden helps to validateA) the need for historical records.B) the appeal of Thoreaus writing and his subject matter.C) the value of conservation efforts run by local governments.D) the changing nature of wilderness. Erin is writing about the history of sonnets. Which is a fact Erin can include?A: Shakespeare was the first to create poetry as a sonnetB: Shakespeare was a poet who wrote only in sonnet formC: sonnets were invented in Italy before Shakespeares timeD: sonnets were created by poets who wrote without rhyme patterns Help omggg jdeekeekekekekeieieieieieoi. Dont wanna be mad at Solve the inequality:6(2y - 4) + 2.6 > 14.7 How do enzymes affect substrates? Because commercial farms use modern technology, a small number of workers can _____.1 raise enough food for an entire country2 live without goods and services 3 feed only the farmers families4 turn a developed nation into an undeveloped one Is 3/8 equal to 6/16