what are valence electrons? why are they so important in chemistry?​

Answers

Answer 1

Answer:

Valence electrons are negatively charged particles located in the outermost shell of atoms that can be transferred or shared with other atoms. Valence electrons are important in chemistry because the number of valence electrons in a particular atom can be used to determine how the atom will react chemically with other atoms.


Related Questions

EASY QUESTION (PLEASE HELP THE INTERNET ISN'T SUCH A BIG HELP RIGHT NOW)
Things microscopes have helped scientists discover about cells.

Answers

Answer:

Again, Microscopes discovered a lot of things in biology like the prokaryotic cells, Bacteria and Archaea, aswell as parts of an organelle/cell.

Two containers of gas have the same volume, temperature and pressure. One container has a sample of oxygen gas having a mass of 3.95g. The other container has a gas with a mass of 2.99g. Determine the molar mass of the gas in the second container.

Answers

Answer:

24.3

Explanation:

Two containers of gas have the same volume, temperature and pressure. One container has a sample of oxygen gas having a mass of 3.95g. The other container has a gas with a mass of 2.99g. Determine the molar mass of the gas in the second container.

O2 has a molar mass of 16 X 2 =32

the number of moles for O2 is the weight divided by the molar mass or, but since the two container have the same P,V, AND T they have the same number of moles since

PV =nRT

SO

the weight of the gas in the second container divided by its molar mass =

0.123

or

2.99/? = 0.123

so

? = 2.99/o.123 = 24.3

How does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed?

А. the value of q is negative
B. the value of q is positive
C. the value of q remains constant OD. the value of a decreases
E. the value of q equals zero ​

Answers

Answer:

the value of q is negative

Can i get help im not really good at science

Answers

cause and effect:
cause- hot weather
effect- you sweat

Answer:

Cause and effect, easy.


Which is the correct word equation for photosynthesis? *

Answers

Answer:

The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.

can someone help me with this question!!

Answers

Answer:

A Because sodium chloride can break down the table sugar

Explanation:

hi

what is the potential energy of an object is its internal energy due to random motons of its individual molecules

Answers

Answer:

Thermal energy consists of the total internal kinetic energy of an object due to the random motion of its atoms and molecules. It is related to heat and temperature.

Explanation:

what is electromagnetisim​

Answers

Electromagnetism is the interaction of electric currents or fields and magnetic fields.


Hope this helps!

Answer:

science of electromagnetic fields

Explanation:

(winks and runs off)

Antoine Lavoisier was able to show that mass wasn't lost or destroyed during chemical reactions by weighing all of the matter in the system before and after reactions occurred. What questions would you ask Lavoisier about how he conducted his investigations?​

Answers

Answer: we can ask simple qs like was it a fair experiment and what he was actually looking for. Other qs include his variables use and that how he has maintained the experiment. Finally we could ask him for his outcome and what it would ahve changed in the near future

Explanation:

Which physical adaptation increases an organism's chances of finding a suitable habitat?
the long legs of wading birds
the croak of frogs
the quills of a porcupine
the venom of snakes

Answers

The physical adaptation among the option that increases an organisms

chances of finding a suitable habitat is the long legs of wading birds

An adaptation is a characteristic that helps an animal survive in its habitat.

Any animal who successfully survives on land or water must have behavioural

and physical trait or attributes or adaptation that assist it to achieve those

goals.

This physical adaptation might be body growth, body covering during

weather change, body functioning or even body parts.

The physical adaptation among the option that increases an organisms

chances of finding a suitable habitat is the long legs of wading birds.

The long legs of wading birds assist them to find a suitable habitat. The long

legs can move through shallow water without wetting their feathers.

There long leg give them better eye sight to search for food and suitable

habitats.

read more:https://brainly.com/question/23404495?referrer=searchResults

:) help please I sent in a photo

Answers

Answer:

I think it's C I think that's the answer

find the solute and solvent of coffee.​

Answers

solute- dissolved compounds of the water solvent- water

Answer:

solute is coffee solvent is the cream or sugar or milk

Why are herbivores in level two of a food
web?

Worth 20 points :)

Answers

Answer:

Hey mate....

Explanation:

This is ur answer....

They tend to be small in size and there are many of them. The primary consumers are herbivores (vegetarians), Because of this inefficiency, there is only enough food for a few top level consumers, but there is lots of food for herbivores lower down on the food chain. There are fewer consumers than producers.

Hope it helps!

Brainliest pls!

Follow me! ♧

They tend to be small in and there are many of them. Herbivores eat plants and are called primary consumers.

An unknown substance dissolves in water but separates and floats in oil.

Answers

Answer:

Any polar substance

Explanation:

We know that non polar substances wont dissolve in water because they do not react properly with water molecules, any polar substance would dissolve in water and float in oil.

An unknown substance dissolves in water but separates and floats in oil is any polar substance.

What are polar substances?

Polar substance are defined as those whose bonding with atoms like nitrogen, oxygen, or sulfur has resulted in discrete positive and negative charge areas.

It can also be defined as an electrical pole is typically created when a molecule has more positive charges on one end than negative charges on the other, forming an electrical pole.

Non polar substances are defined as a molecule that lacks charges at the ends because its electrons are evenly distributed and those that cancel one another out symmetrically.

It is can also be defined as in covalent compounds, there is no change in electronegativity.

Thus, an unknown substance dissolves in water but separates and floats in oil is any polar substance.

To learn more about polar substances, refer to the link below:

https://brainly.com/question/11782506

#SPJ5

2. Which of the following statements is true about covalent bonding?
A It is the attraction of atoms for an electron
B it involves the losing and gaining of electrons
Cit involves the sharing of electrons
Dit involves the moving of electrons between energy levels

Answers

Answer:

C. it involves the sharing of electrons

Explanation:

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.

hope this helps :)

which electrode serves as the anode, and which as the cathode?

Answers

Pt serves as the cathode, Cd as the anode.

I'm quite sure this is the answer

Hope it helps!

I'm horrible at Chem plse help! Determine whether the reaction given below would be spontaneous or not. JUSTIFY your answer.
Mg2+ (aq) + Ag (s) → Ag+ (aq) + Mg (s)
Thank you

Answers

Answer:

This is a not a spontaneous reaction.

Explanation:

No, it would not be one because if you add the reactants the products would have to be the same (same types of atoms. number of atoms, and the arrangement of the atoms). In this case the reactants and the products are not equal.

Regina found an accelerant at the crime scene. What did she MOST likely find?

A.
a stash of unused bullets

B.
a bottle of luminol

C.
a container of gasoline

D.
a soda can filled with ashes

Answers

Answer:

c

Explanation:

mostly it used in movies in the crime scence

Accelerants are flammable solvents such as kerosine, turpentine, gasoline etc. Therefore, the accelerant obtained from the crime scene here, is gasoline.

What are accelerants?

Accelerants are substances that can combine, blending, or disturb another substance, causing the speed of a natural or artificial chemical process to increase. Accelerants are important in chemistry because they can speed up most chemical reactions.

Accelerants change a chemical bond, accelerate a chemical process, or restore organisms to homeostasis. Accelerants are not always catalysts because they can be consumed by the process.

Flammable gases or solvents such as gasoline, diesel, butane gas, kerosine, turpentine etc are examples of accelerants. Therefore, among the given substances , gasoline is the accelerant.

To find more on accelerant, refer here:

https://brainly.com/question/24372530

#SPJ2

A beaker contains an acidified copper sulphate solution.A copper plate and a carbon plate is connected to postive terminal to battery whereas carbon rod is connected to negative terminal of battery.What will you observe when an electric current is passed through this setup for a considerable time​

Answers

The copper plate connected to positive terminal (anode) will decrease in size and wear away and the copper plate connected to negative terminal (cathode) will increase in size and thicken, the electrolysis will continue until the anode completely disappears

can someone help me please


so basically i have to match the vocabulary terms with their definitions ​

Answers

Explanation:

Electrical energy: Kinetic energy caused by moving electrons

Example of energy: lighting

Chemical energy: Energy stored in matter

Example of energy: natural gas

Light energy: a kind of kinetic energy that moves in waves and can be seen

Example of energy: stars

Mechanical energy: Is the sum of an object's kinetic energy and potential energy

Example of energy: dart guns

Answer: Q1.) electrical enegry

      Q2.) light energy  

                Q3.) chemical energy

                Q4.) mechanical energy

Explanation:

Q.1) kinetic energy caused by moving electrons ?

eletrical energy

Q2.) what kind of kinetic energy that moves in waves and can been seen?

       light energy  

Q3.)  energy stored in matter ?

        chemical energy

Q4.) the sum of an object's kinetic and potential energy ?

        mechanical energy

omg y'all pls so much help me!!!
1. H2SO4
2. MGNO3
their %​

Answers

H2SO4
H: 1 x 2 = 2
S: 32 x 1 = 32
O: 16 x 4 = 64
98amu

H: 2/98 x 100 = 2%
S: 32/98 x 100 = 33%
O: 64/98 x 100 = 65%


MGNO3 (I think you meant Mg(NO3)2 aka Magnesium Nitrate. So this might be wrong because I did the version you sent instead of what I thought you might mean.)

Mg: 24 x 1 = 24
N: 14 x 1 = 14
O: 16 x 3 = 48
86amu

Mg: 24/86 x 100 = 28%
N: 14/86 x 100 = 16%
O: 48/86 x 100 = 56%

What can you put in a turkey cavity instead of stuffing

Answers

Answer:

The secret to adding extra flavor to your Thanksgiving turkey is to season it liberally. To make sure that your favorite herbs permeate every bit of your bird, stuff a small bundle into the turkey cavity. Thyme, sage, parsley and a bit of rosemary are a great combination—but feel free to customize to your taste.

Answer: Herbs, Onions and Garlic, Apples, Celery, Citrus fruits, Fennel, Ginger, Beer, Other poultry

Will Mark Brainliest
Part D: Bohr’s Atomic Model Question 1 Using what you can recall from this unit, write one or two short paragraphs describing Niels Bohr’s atomic model. If needed, you may search the Internet for descriptions of the model.

Answers

Answer:

The Bohr Model is a planetary model in which the negatively-charged electrons orbit a small, positively-charged nucleus similar to the planets orbiting the Sun (except that the orbits are not planar). The gravitational force of the solar system is mathematically akin to the Coulomb (electrical) force between the positively-charged nucleus and the negatively-charged electrons.

Main Points of the Bohr Model

Electrons orbit the nucleus in orbits that have a set size and energy.

The energy of the orbit is related to its size. The lowest energy is found in the smallest orbit.

Radiation is absorbed or emitted when an electron moves from one orbit to another.

Have a great day friend! :D

A small positive charges nucleus is encircled by revolving negatively charged electrons in fixed orbits, according to the Bohr Atomic model.

What are the drawbacks of Bohr’s Atomic Model?

The atom is basically depicted in the Bohr model as a central nucleus containing protons along with neutrons, with electrons in circular orbitals at various distances from the nucleus.

These orbits combine to form electron shells or energy levels, which allow you to see how many electrons are in each shell.

He concluded that electrons have more energy when they are located away from the nucleus, whereas electrons have less energy when they are located near the nucleus.

He was unable to explain the specifics of the Hydrogen and Helium atomic spectrums.

He did not explain how spectral lines split in the presence of a magnetic field. He did not explain the intensity of spectral lines.

Thus, these can be concluded regarding the Bohor's atomic model.

For more details regarding Bohr’s Atomic Model, visit:

https://brainly.com/question/11872378

#SPJ2

Please count compound list each element and the amount of each and then figure out the total of the atoms
​NEED ANSWER ASAP​

Answers

Answer:

Look at the formula.

Explanation:

Carbon: 10

Hydrogen: 14

Nitrogen: 2

10 + 14 + 2 = 26

Organic, its nicotine

HURRY

What type of reaction is this? 2H2 + O2=>2H 20 + Energy
A. Exothermic reaction
B. Endothermic reaction
C. Chemical reaction
D. Nuclear reaction

Answers

Answer:  Both A and C

Explanation:

It is a combustion reaction that is exothermic.  It is a chemical reaction.  Choices A and C are both correct, so I'm not certain what criteria are most important in answering.

Vinegar is an ingredient commonly used by chefs. Scientists also use it as well, although they call it acetic acid. When vinegar is in its liquid or solid (frozen) states, it has a fixed volume. But when vinegar is in its gas state, it takes up the entire volume of whatever container it is in. This is why you can smell an open bottle of vinegar the minute you walk into a kitchen, even though you cannot actually see the gas particles!

Which statement best explains why the volume of vinegar gas is changeable as opposed to the fixed volume of its solid and liquid states?

A. Gas particles are always at a higher pressure than solids and liquids.

B. Gas particles are always at a higher temperature than solids and liquids.

C. Gas particles are spaced far apart and can move freely.

D. Gas particles stay close together but can move around each other.

Answers

Answer: C

Explanation: Because gas particles are free to move fast where as liquid can move a little but solid cant so it would be C

Hope it helps

Consider this reaction: 2H CO32- → H2O CO2. Identify each of the following as a product, a reactant, or a coefficient. CO32-: H2O: CO2: The 2 in front of H :.

Answers

Answer:

The 2 in front of the H is a coefficient.

H and (CO3)2 are reactants.

H2O and CO2 are products.

This reaction is an example of Combustion.

Answer:

CO32-:   reactant

H2O:   product

CO2:   product

The 2 in front of H+:  coefficient

Explanation:

This is the real answer, I got it right on edge or whoever you write it.

an inexperienced student adds a solution of catalytic h2so4 and water to the alkene shown below, expecting to produce 1-cyclobutylethan-1-ol.

Answers

The rearrangement produces a more stable tertiary carbocation and the unexpected product.

In the image shown, the substrate is 1-cyclobutylethene. The attack of H2SO4 and water will lead to the conversion of the alkene to an alkanol. Two possible products may be obtained with one being greater than the other.

The unexpected product (Shown in the image attached) is obtained due to rearrangement of the carbocation intermediate. The rearrangement produces a more stable tertiary carbocation and the unexpected product.

Learn more: https://brainly.com/question/6284546

What makes a charged object attract an uncharged object?

A. The charge in both objects move around.
B. The charged object is positively charged.
C The charges move in the uncharged object.
D The uncharged object becomes negatively charged

Answers

Answer:

C

Explanation:

When we put a charged object near an uncharged object, it produces opposite charges in the near end of the uncharged object by electric induction. ... If we bring it near an uncharged sphere, the sphere forms negative charge near the glass rod, and positive charged on the end away from glass rod

When gravity is the only force acting on an object, the object is said to be in__.

Answers

I think it’s free fall
What is Free Fall? When the only force acting on an object is gravity, the object is said to be in free fall. The force of gravity causes the object to accelerate. Free fall is motion where the acceleration is caused by gravity.
Other Questions
What are the three main causes of the French Revolution? And explain with evidence. 5) How would you break down 40% to find 40% of a number? Check allthat apply.2 points4(10%)2(25%)10% + 10% + 10% + 10%25% + 10%50% + 10% + 10% Where do city governments get their power from? How many people were injured at travis scott concert? how many pounds of potatoes for mashed potatoes for 20 who was the delegate known as the father of the constitution? Help me plssss!!!! Ill mark you BRAINLY if you do! . Circle the correct choice for each statement 1. The number of substances in a mixture (can - cannot) be varied, for a compound they (can - cannot). 2. The different substances in a mixture (can - cannot) be joined chemically; a compound (can - cannot). 3. Substances in a mixture (do - do not) keep their own properties. 4. Substances in a compound (can - cannot) be easily separated; in a mixture, they (can - cannot). 5. Examples of (mixtures - compounds) are air, sea water, and most rocks. 6. Examples of (mixtures - compounds) are water, salt, and sugar. 7. Compounds are made of elements and have a (physical chemical) formula. 8. A (solvent - solute) is the substance that dissolves in another substance. 9. True or False: A mixture cannot have five substances. 10. True or False: In a suspension, a substance may sink to the bottom. A group of 6 friends rent a cabin on a campsite. It costs $62.88 to rent the cabin. if they divide the cost evenly between them, how much does each friend need to pay? Solve the given equations. PLEASE show your work. Answer if it has No solution or Infinite many solutions.-17 + 2(1 + 3x) = x - 5(3 - x) The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes). The remaining credit after 31 minutes of calls is $20.97, and the remaining credit after 50 minutes of calls is $18.50. What is the remaining credit after 54 minutes of calls? Which set of ordered pairs does not represent a function?O {(-7, -8), (-7,5), (-6,0),(-1,8)}O {(-2,4), (6,-5), (-6, -9), (1, -5)}{(8, -2), (3,9), (-1, -5), (-3,9)}{(9,7), (2,7), (-8, -3), (-1,1)} which factor is a primary cause of seasonal changes on earth? Hiep is writing a coordinate proof to show that the midsegment of a trapezoid is parallel to its bases. He starts by assigning coordinates as given, where RS is the midsegment of trapezoid KLMN. Trapezoid K L M N on the coordinate plane. The vertices of the trapezoid are K begin ordered pair 0 commas 0 ends ordered pair, L begins ordered pair 2a comma 0 end ordered pair, M begin ordered pair 2d comma 2c end ordered pair, and N begin ordered pair 2b comma 2c end ordered pair. Segment R S is drawn with point R on segment K N and point S on segment L M. Drag and drop the correct answers to complete the proof. Since RS is the midsegment of trapezoid KLMN, the coordinates of R are (b, Response area) and the coordinates of S are (, c). The slope of KL is the Response area. The slope of RSis 0. The slope of NM is 0. The slope of each segment is 0; therefore, the midsegment is parallel to the bases. choices - a, b,c,d a+d, 0, 1, 2 Please help me with this I need the answer soon!Drag each angle measure to the correct location on the image. Each angle measure can be used more than once.In the figure, two parallel lines are cut by two other parallel lines. The measures of one of the angles is labeled. Find the measures of the other angles and label them.137 52 128 38*then its the picture* need sever help with number 4 , pls explain Write the equation of the line that passes through the given points.(1,2.5) and (0,6.5) what is photosynthesis question in doc below . 1 pointWhat is the potential energy of a bird flying, if the bird has 1000 J of totalenergy and 450 J of kinetic energy? (only put the number, no units orcommas)