when molecules move they react by cooling down.
True or False?

Answers

Answer 1

Answer:

false

Explanation:

when molecules move they heat up


Related Questions

A student wants to make a fair comparison of the reactivity of the metals with hydrochloric acid.
Name two variables that must be kept constant.

Answers

Answer:

the concentration of the reactants

the temperature in heating

The variable that should be kept constant is the concentration of the reactant and the temperature in heating.

What is hydrochloric acid?

Hydrochloric acid (HCl) is called as the muriatic acid represent the colorless corrosive, also the mineral acid should be strong that contains various industrial used also it should be reacted with an organic base it created the hydrochloride salt.

Therefore, we can conclude that The variable that should be kept constant is the concentration of the reactant and the temperature in heating.

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The formula for one molecule of sucrose is shown below.
C12H22011
How many atoms in all are in one molecule of sucrose?

Answers

Answer:

45

Explanation:

There are 12 Carbons

There are 22 Hydrogens

There are 11 Oxygens.

I think the answer is either 0 or 45. But the wording is very sloppy. It is not really atoms that are present. There are ions.

Go with 45 but hold your nose when writing your answer.

Which of an atom's electrons are inrolved in chemical reactions?

Answers

Answer:

Electrons at the outermost energy level of an atom are called valence electrons. They determine many of the properties of an element. That's because these electrons are involved in chemical reactions with other atoms. Shared electrons bind atoms together to form chemical compounds.

Explanation:

Answer:

electrons farthest from the nucleus of the atom. they are called valence electrons

HURRY FAST. It is known that complex carbohydrates provide more sustained energy over time than simple sugars such as sucrose. Complex carbohydrates are polysaccharides, which are long chains of smaller sugar molecules bonded together. Simple sugars are monosaccharides that contain only one molecule. Why do complex carbohydrates provide more energy over time versus simple carbohydrates? Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use. Complex carbohydrates have bonds that contain more thermal energy than those in simple carbohydrates, which is released when they go through the digestive process. Complex carbohydrates provide Calories for the body while simple carbohydrates provide calories. Calories are bigger than calories and provide more energy. Complex carbohydrates take less energy to digest, which means that the body does not spend all of its calories digesting the food. This saves calories for the body to use later.

Answers

Answer:

Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use.

Explanation:

Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates.

Answer

The answer is A if you want it simplifited.

from the guy above

What is Constituent Element?

Answers

Answer:

hope it helps...

Explanation:

a constituent element, material, etc.; component. a person who authorizes another to act in his or her behalf, as a voter in a district represented by an elected official. Grammar. an element considered as part of a construction. Compare immediate constituent, ultimate constituent.

If this helped please comment...

a constituent element, material, etc.; component. a person who authorizes another to act in his or her behalf, as a voter in a district represented by an elected official. Grammar. an element considered as part of a construction. Compare immediate constituent, ultimate constituent.

What is the order of decreasing reactivity of these 4 metals?

Answers

Answer:

Ca, Mg, Zn, Cu

Explanation:

Refer to the Reactivity Series where each metal is more reactive than others.

please answer willl give brainlist !!! Name the noble gases. What are the common properties between them?

Answers

Answer: Other characteristics of the noble gases are that they all conduct electricity, fluoresce, are odorless and colorless, and are used in many conditions when a stable element is needed to maintain a safe and constant environment. This chemical series contains helium, neon, argon, krypton, xenon, and radon.

Non examples of chemical change
List some please

Answers

Answer:

Crushing a can.

Melting an ice cube.

Boiling water.

Mixing sand and water.

Breaking a glass.

Dissolving sugar and water.

Shredding paper.

Chopping wood.

Some non-examples of the chemical reaction should be boiling water, glass breaking out, etc.

Chemical reaction

It is a process where one or more substances that we know as reactants should be transformed into one or more distinct substances that we know as products. Here the substances should be treated as the elements of chemicals or the compounds.Chemical reactions are an integral part of technology, culture, and indeed of life itself. Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions that have been known and used for thousands of years. Chemical reactions abound in the geology of Earth, in the atmosphere and oceans, and in a vast array of complicated processes that occur in all living systems.

Therefore, Some non-examples of the chemical reaction should be boiling water, glass breaking out, etc.

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Which event most likely occurs at point V?

cooling
erosion
heating
melting

Answers

Answer: cooling

Explanation:

Answer:

cooling

Explanation:

Which describes how rubbing fur on a rubber rod makes the rod negatively charged. Select one: A. Electrons move from the fur to the rubber rod. B. Electrons move from the rubber rod to the fur. C. Protons move from the rubber rod to the fur.

Answers

Answer:

A

Explanation:

Rubbing fur on a rubber rod results in the rod becoming negatively charged as a result of the movement of electrons from the fur to the rubber rod.

The process is called triboelectric charging.  When the two substances are rubbed together, their atoms come into close proximity with each other and their electron clouds interact with the fur losing electrons to the rubber due to the fact that the atoms of the rubber have higher affinities for electrons than the atoms of the fur. Hence, the fur becomes positively charged while the rubber becomes negatively charged.

Which of the following is an extensive property of a sample of aluminum?

Answers

Answer:

Entropy,mass and volume.... I think

Mass is the extensive property of a sample of aluminum. Therefore, option (A) is correct.

What is the extensive property of matter?

The extensive property can be described as a physical property of matter that changes with a change in the size and shape of the matter. Therefore, the extensive property of any substance varies directly with the mass.

Extensive properties are the value of the property of the system that must be equal to the sum of the values of different parts of the system. These properties depend on the amount of matter contained in the system.

Examples of Extensive properties are temperature, pressure, density, boiling point, etc. The ratio of the two extensive properties is an intensive property such as density.

The mass of a sample of aluminum is an example of extensive property as it depends on the amount of aluminum in the given sample. This property of the sample is proportional to the size of the system.

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Your question is incomplete, most probably the complete question was,

Which of the following is an extensive property of a sample of aluminum?

A) Mass

B) Temperature

C) Pressure

D) Density

What is the formula for nitrogen monoxide?
O N203
O NO
O N₂O,
O None of the answers are correct

Answers

The answer is NO.

Mono- means 1, so monoxide would indicate that there is 1 oxygen.

The N is double bonded to the O:

N=O

And has an unpaired set of electrons

PLEASE HELPPPP! :{
Leandra is performing an investigation. She places one strawberry by the window in the sunlight and another strawberry inside of the refrigerator. Leandra leaves the strawberries for three weeks and observes them. After the three weeks, what observation did Leandra make?

A. The strawberry in the refrigerator rusted faster because it was exposed to less heat.
B. The strawberry by the window rusted faster because it was exposed to more heat.
C. The strawberry in the refrigerator rotted faster because it was exposed to less heat.
D. The strawberry by the window rotted faster because it was exposed to more heat.

Answers

D or B because if u put a strawberry in heat it’s gonna rot

The repeating subunits that are responsible for the chance of a crystal are know as
unit cells
heavy nuclei
light electrons
amorphous cells

Answers

Unit cells.
They are the smallest group of atoms that take form of a crystal and can repeat in 3 dimensions.

why organic compounds have a slow rate of reaction

Answers

Answer:

first help me plz plz

Explanation:

coz  i hate chemistry

5. Name the compound which contain Strontium, Fluorine, and Oxygen.

Options:

Strontium fluorate

Strontium fluoride

Strontium chlorate

Strontium fluorine


what would happen if the
attractive forces between all of the particles
of matter on Earth were equal?

Answers

Either everything would solid (strong attractive force), liquid or gas (weaker attractive force). Everything would be the same matter

The magnitude of attractive forces between particles that compose matter determine the state of matter. Hence, if all particles of matter on earth have equal attractive forces, only a single state of matter (solid, liquid or gas) will exist on earth.

Matter exists in three states;

SolidLiquidGas

In solids, there exists the greatest magnitude of attractive forces between particles.

There are weaker inter-molecular attractive forces between liquid particles. However, inter molecular attractive  forces are almost non-existent in gases.

The reason for the existence of different states of matter on earth is difference in magnitude of inter molecular attractive forces in each state of matter.

If all particles of matter possess equal attractive forces, only one state of matter will be found on earth; either solid, liquid or gas.

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what particle joins or bonds atoms to form a compound or molecule

Answers

I hope it is helpful for you ....

question is
P2O5 a ionic or covalent bond, its covalent right?

Answers

Yes it is ========== covalent bond

Answer:

Covalent

Explanation:

A general clue that a compound is covalent is two nonmetallic elements bonded together. There is the sharing of electrons but no transfer or formation of ions like there is in ionic bonding.

how can you find the Frequency if you only have the wavelength? can you solve this example what is the Frequency of the wavelength 4km? can you please show your steps thanks.

Answers

Answer:

75000 Hz

Explanation:

f = V / λ (f= frequency, v=velocity of wave, lambda= wavelength)

alternatively, f = c / λ (f= frequency, c= speed of light- 3.00x10^8 m/s, lambda= wavelength)

f= [3.00x10^8 m/s]/[4000 m]

=75000 Hz

Help please. ASAP.
1. Explain how you think changing in the thickness or length of the nail will affect the strength of the electromagnet

Answers

Answer:

I believe- If there is more metal for the magnet to reach for, then the strength will grow but it may be harder to pick up off of a surface depending on the weight of the nail. If it is a light nail, it would be more efficient for a quick result in having the magnet to pick it up

Explanation:

Answer:

Ferromagnetic materials make the magnet stronger than non-ferromagnetic materials like paper, wood, or air. A wider nail will make the magnet stronger. Making the nail longer will not make the magnet stronger, unless you also add more turns to the coil.

Explanation:

I hope this helps!!

Which of the following causes a physical change in the shape of an object?
A. Using a wire to conduct electricity
B. Heating a piece of iron until it glows
C. Placing a penny in acid to make it shiny
D. Sharpening the tip of a pencil
please helppp

Answers

Answer:

B

Explanation:

Heating a piece of iron until it glows.

Heating a piece of iron until it glows causes a physical change in the shape of an object. Therefore, option B is correct.

What is physical change ?

The term physical change is define as a type of change where the physical properties of matter change. In physical change, composition and chemical nature of matter does not change.

It involves in change in physical properties. The examples of physical changes are textural change, shape, size, color, volume and density.

Heating a piece of iron until it glows causes a physical change in the shape of an object, because it involves physical property. The changes in which only physical properties of substances are changed, and no new substance is formed

Thus, option B is correct.

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Consider the reaction.

Upper H subscript 2 upper o (g) plus upper C l subscript 2 upper O (g) double-headed arrow 2 upper H upper C l upper O (g).

At equilibrium, the concentrations of the different species are as follows.

[H2O] = 0.077 M
[Cl2O] = 0.077 M
[HClO] = 0.023 M

What is the equilibrium constant for the reaction at this temperature?
0.089
0.26
3.9
11

Answers

Answer:

The value of Equilibrium constant for the given reaction is 0.089

Explanation:

The given data shows the following reaction

    H2O (g)  + Cl2O (g) ⇄ 2 HClO (g)

The above reaction is in equilibrium.

Equilibrium constant K  = [tex]\frac{[C]^c*[D]^d}{[A]^a*[B]^b}[/tex]

for the reaction

aA+bB ⇆ cC +dD

so

K  = [tex]\frac{[HClO]^2}{[H2O][Cl2O]}[/tex]

    = [tex]\frac{[0.023]^2}{[0.077][0.077]}[/tex] = 23*23/77*77 = 0.089

Therefore the value of Equilibrium constant for the given reaction is 0.089

Answer:

The value of Equilibrium constant for the given reaction is 0.089


What percent of a human cell is made of macromolecules?

Answers

Answer:

About 70 percent. I hope this helps :)

Which of the following is the best way to model the process of weathering?

Using a fan on a pile of sand causing the sand to move into a pile in a new location.

Using a ramp to dump sand at the bottom causing the sand to pile up.

Using a watering can sprinkle water onto sand causing the sand to move to a new location.

Filling a glass bottle with water and allowing it to freeze causing the bottle to break.

Answers

i think it’s the last one

The best model of weathering is using a fan on a pile of sand causing the sand to move into a pile in a new location.

Weathering refers to the gradual breakdown of a rock due to the agents of denudation. The agents of denudation could be physical, chemical or biological.

The breakdown of rocks leads to the formation of soil. The closest model to the weathering of rock is using a fan on a pile of sand causing the sand to move into a pile in a new location.

The pile represents the rock which is being broken down as the fan blows the pile and it settles on a new location.

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What does the chemical formula show?
a) The number of elements in each molecule
b) The number of atoms in each molecule
c) How heavy the molecule is.
d) The elements in the molecule and the number of atoms of each one .​

Answers

Answer:

A

Explanation:

You can eliminate C because you need to consult a periodic table to determine the mass (not the weight).

There are other answers you could use. The wording is awfully sloppy.  D is an example of that. The elements part is true, the atoms part is not really true in all cases.  For example NaCl is table salt and both the elements are ions, not atoms. Na is plus ion and Cl is minus one. B is wrong for the same reason.

I think in the end I would choose A.  I think this is a very sly question. It is not really testing chemistry. It is testing how well you know your definitions.

Keep a chart of your observations. You may even want to draw what you see. What do you observe? What does this tell you about the density of the liquids and the objects you put into them?

Answers

Answer: The density of a liquid determines whether it will float on or sink in another liquid. A liquid will float if it is less dense than the liquid it is placed in. A liquid will sink if it is more dense than the liquid it is placed in.

Explanation: I hope that helped!!

(?)Li2O + (?)H2O → (?)LiOH

what goes inside the question marks?

Answers

Answer:

(1)Li2O + (1)H2O → (2)LiOH

Hope this helps!


All atoms, isotopes, and ions of Magnesium have the same...
atomic number
mass number
all of the above
charge

Answers

Answer:

option A: Atomic number

Explanation:

The atoms, isotopes and ions of magnesium doesn't change the atomic number of the magnesium.

For example, Isotopes are atoms that have the same number of protons but at the same time have different numbers of neutrons. This means that atomic number remains the same while mass number differs. Now, an ion is defined as an atom or molecule that has either a positive or negative charge.

So only option A is correct: Atomic number

The Tissues of vascular Plants are organized into more complex structures that carry out a Variety of functions in the plant what structure is formed by a Group of tissues that work together to carry out a Specific function

A) Cell
B) Organ system
C)Organism
D Organ

Answers

Answer:

D Organ

Explanation:

A group of tissues that work together to carry out a specific function is known as organ.

Life is organized into distinct levels. These organization makes it possible for certain cells which are the basic unit of life to carry out their respective function.

A group of cell that performs the same function are organized into tissues. A group of tissues that work together to carryout a specific function are known as organs. A group of organs that perform the same functions forms the organ systems.

As the complexity of an organism increases, so also is their organization of life.

If the solid, liquid, and gas forms of a substance
are made up of the same type of particles, How
could a substance change from one state to
another?

Answers

presence of heat can change solid tu liquid

and liquid to gas

Other Questions
Read the section "Mullen's Career Saved By Game Appearance." Select the detail from the article that suggests that Pro Skater video games helped Rodney Mullen's career. Mullen, considered an important skater in history, was a character in Tony Hawk's Pro Skater 2. Mullen, considered an important skater in history, was a character in Tony Hawk's Pro Skater 2. "I called him up and was like, 'Hey man, I'm thinking of giving up. I don't know if this is a sign. I've busted my ankle,'" Mullen said. "I called him up and was like, 'Hey man, I'm thinking of giving up. I don't know if this is a sign. I've, , busted my ankle,'" Mullen said. "'You hurt your ankle? Big deal. That doesn't mean anything. Oh, and by the way, do you wanna be in my game?'" "'You hurt your ankle? Big deal. That doesn't mean anything. Oh, and by the way, do you wanna be in, , my game?'" When Mullen went on tour the next summer, a month after the game came out, there were more people The area of a rectangle is 5/6 square foot. The width is 2/3 foot. How many times greater is the length than the width? Write your answer in simplest form. Present simple and continuous Circle the correct form: 1. I (are, am) happy. 2. All my friends (like, likes) football. 3. My sister (don't like, doesn't like) school. 4. (Is, Are) a farmer's life stressful?5. My parents (don't listen to, doesn't listen to) rock music.Present continuous questions: 1. you (clean) the car? 2. I (look at) the correct page? 3. the dog (eat) its dinner?Present simple and continuous: (read, have, interview, watch, write, work, be)1. Ben _______ a book after lunch every day.2. We _________ at a club for three weeks in the holidays. 3. Cathy________ all the soap operas on TV.4.Mick________a stressful lifestyle,he _______ a police officer.5.I _______ a book about London. I ______ some businessman at the moment. The young boy ___ to inquire when dinner would be served. 1. interposed 2. preoccupied 3. quaked Harry needs 21 square meters of fabric for every 6 wizard cloaks he makes. Complete the table using equivalent ratios. help me pleaseeee Earthquake A has a magnitude of 4.2. Earthquake B has a magnitude of 6.1. Which statement could explain the different magnitudes?A:The seismic waves caused by earthquake B traveled more slowlyB:The rock that shifted to cause earthquake B was deeper undergroundC:The seismic waves caused by earthquake B all traveled in the same directionD:The rock that shifted to cause earthquake B released more energy Liang Company began operations on January 1, 2017. During its first two years, the company completed a number of transactions involving sales on credit, accounts receivable collections, and bad debts. These transactions are summarized as follows.2017a. Sold $1,347,100 of merchandise (that had cost $983,600) on credit, terms n/30.b. Wrote off $21,100 of uncollectible accounts receivable.c. Received $667,400 cash in payment of accounts receivable.d. In adjusting the accounts on December 31, the company estimated that 2.50% of accounts receivable will be uncollectible.2018e. Sold $1,501,200 of merchandise on credit (that had cost $1,291,000), terms n/30.f. Wrote off $28,100 of uncollectible accounts receivable.g. Received $1,282,100 cash in payment of accounts receivable.h. In adjusting the accounts on December 31, the company estimated that 2.50% of accounts receivable will be uncollectible.Required:1. Prepare Journal entries to record Liang's 2017 and 2018 summarized transactions and its year-end adjustments to record bad debts expense.2. Prepare Journal entries to record Liang's 2017 summarized transaction and its year-end adjustment to record bad debts expenses.3. Prepare Journal entries to record Liang's 2018 summarized transactions and its year-end adjustments to record bad debts expense. im writting a sonnet and I need help to figure out the difference between stressed and unstressed syllables because i dont really get it. 1.You_______always look both ways before crossing the street.2.Mary______attend the fundraiser later. She has alredy scheduled it in her planner.3.The bus_______be late as the as the traffic situation in the city is very unpredictable.4.Mara got the highest score on today's science's exam.She______study a lot.5.I_____help my mother clean the house but I feel very tired SINE COSINE and TANGENT ratios (Type an integer or simplified fraction) Read the passage from "Initiation."The door behind her opened and a ray of light slicedacross the soft gloom of the basement room."Hey Millicent, come on out now. This is it." 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HELPPPPPPPPPPPPPPPPPPPPPPPPPP In the "Declaration of Sentiments," what does Stanton list as the first self-evident truth? A. All citizens should be allowed to vote. O B. All men and women are created equal. O C. Men and women should be equal partners in marriage. O D. Women should be entitled to attend the college of their choice.