Matter and Chemical Formula
Let us learn about
Atoms and molecules
Element, compound and mixture
Chemical symbol and chemical formula
Atomicity and valency​

Answers

Answer 1

Answer:

Atoms are the basic units comprising matter, and interact in a variety of ways.

Explanation

The most fundamental unit of matter that makes up elements is called atoms. Atoms comprise nucleus-orbiting electrons- while protons and nuetrons make up a stable nuclues. Here, the neutrons are uncharged, while the negatively charged electrons are attracted to the positively charged protons at the atom's center

The number of protons the atom determines its atomic number, and the sum of protons and neutrons determine the atomic mass.

Elements in the periodic table, are typically represented by chemical symbols- abbreviations of their atomic name. They are arranged in order of valency- atoms in the same group typically have the same number f electrons on their valence shells, and thus their physical properties behave similarly (conductivity, melting points, boiling points).

Valence electrons, on outer valence shells, also influence bonding. The atoms donate, accept or share valence electrons in order to achieve more stable atoms. Bonding between elements form molecules, that may interact with molecules to form compounds.


Related Questions

What function are stomach cells adapted for

Answers

Answer:

The stomach is J-shaped and it can expand to temporarily store food. Partial digestion of the food takes place here. The churning action of the stomach muscles physically breaks down the food. The stomach releases acids and enzymes for the chemical breakdown of food.

Explanation:

FUN FACT OF THE DAY (part:2)

Gorillas can actually catch human colds and sicknesses and make happy noises sometimes when eating!

What animal do you want to find out about tomorrow?

Answers

Answer:

a red panda maybe?? or a dolphin!!

Explanation:

this is cool keep doing you :) <3

Answer:

Bunnies

Explanation:

I am obsessed with them.Pls do it tmr

What process in prophase 1 causes DNA to switch
places on separate chromosomes?

Answers

Explanation:

Recombination Occurs During the Prolonged Prophase of Meiosis I. Prophase I is the longest and arguably most important segment of meiosis, because recombination occurs during this interval. For many years, cytologists have divided prophase I into multiple segments, based upon the appearance of the meiotic chromosomes.

Hope this helps!

Label the part of the cell membrane

Answers

Answer:

head molecule, a phosphate molecule, a glycerol and two fatty acid chain

Answer:

molecule, a phosphate molecule, a glycerol and two fatty acid chain

Explanation:

What change in volume is expected to result in a faster rate of diffusion ?

Answers

Answer:

When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared. When there is more volume and less surface area, diffusion takes longer and is less effective

Explanation:

Hope this could help- Good luck ^w

When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared. When there is more volume and less surface area, diffusion takes longer and is less effective


Identity the following
structure indicated
by the arrow
A Anticodon
B Amino Acid
C tRNA
D. Codon

Answers

Answer: Amino acid

Explanation:

What important role does fire play in a grassland biome?

Answers

Fire naturally occurs in a grassland ecosystem and it helps the environment stay healthy and strong. I promotes richer soil as well as gets rid of excess leaves scattered around. After a fire, grassland ecosystems can grow again and be better than they were before.  

Answer: Fire is a natural part of the grassland ecosystem and helps maintain its health and vigor. It warms up the soil and reduces the leaf litter that accumulates each year, allowing sunlight to penetrate. ... After a fire, blackened fields quickly revive with new, green grasses and abundant, showy wildflowers. So, fire is important because it helps things grow better... sorry if i am incorrect...

hope this helps.. stay safe and have a great day!!! :D

Cell Questions part 2!
Will give brainlist

Answers

Answer:

12 is b

Explanation: ribosoms combine amino acids

Please help with this question

Answers

Answer:

the nucleus is divided into two nuclei

Explanation:

Look at the frames from Iqbal. Ghullah says, "You know what will happen to you if you leave your work!" Iqbal ignores his owner How does the author achieve his purpose of highlighting Iqbal’s bravery in these frames? by showing Iqbal helping others escape the factory owner by showing the factory owner making a deal with Iqbal’s family by showing the factory owner making a threat directed at Iqbal

Answers

Answer:

C-by showing the factory owner making a threat directed at Iqbal

Explanation:

The answer is C in Edge :)

3. What temperature and density changes occur in a fluid or gas material that cause convection to occur?​

Answers

Answer:

There is an increase in density and a corresponding increase in the temperature of the fluid

Explanation:

The temperature and density changes occur in a fluid or gas material that cause convection to occur include increase in density and a corresponding increase in the temperature of the fluid.

This is because convection involves the movement of fluids from a hotter area to a colder area and hot fluids usually have a lower density.

1. how many chambers does the human heart have?

2. what close the valves in the heart and why should they do this?

3. what do we call a pulse?

4. describe blood capillaries​

Answers

Answer:1. four

Your heart has four separate chambers that pump blood, two on the right side and two on the left.

2. When the ventricle relaxes, the aortic valve closes to prevent blood from flowing back into the ventricle. When the aortic valve is not working properly, it can interfere with blood flow and cause the heart to strain to send blood to the rest of the body.

3. In medicine, a person's pulse is a pressure wave caused by the expansion of the arteries as a result of the circulation of blood pumped by the heart.

4. Capillaries are tiny vessels that branch out from arterioles to form networks around body cells.

Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them.

hope this help! ^^

What is meant by the term carbon footprint?

Answers

Answer:

Ah so you're in a predicament

Explanation:

Its A man

URGENT!!
In addition to water, which of the following substances are polar?

A. Oil
B. Sharpie Marker
C. Butter
D. Nail Polish
E. Sugar

Answers

Answer:

Sugar

Explanation:

Sugar is the only polar substance here

Answer:

E: sugar

Explanation:

Fats and oils are nonpolar so its not oils or butter.

Most inedible or permanent inks like sharpie are nonpolar so its not sharpies.

Nail polish has a number of ingredients one is resin, which is nonpolar. The answer is sugar.

Is there a link between the errors in mitosis and schizophrenia? helppppp pleaase

Answers

Answer:

sorry there is not link

Scientists count the number of organisms in the tallgrass prairie. Which trophic level would you
expect to contain the smallest number of organisms?
A. Producers
B. Primary consumers
C. Secondary consumers
D. Tertiary consumers

Answers

D. Tertiary consumers

Scientists count the number of organisms in the tallgrass prairie. The trophic level would you expect to contain the smallest number of organisms is Tertiary consumers. Thus, option D is correct.

Who are known as producers?

The organisms that are capable of making their food like plants are called producers. The organisms that feed on the producers are known as primary consumers. The primary consumers include all kinds of insects, caterpillars, termites, etc.

Tussock larvae would be a primary consumer. The organisms that feed on the primary consumers are termed as Secondary consumers. In this example, the birds are eating the primary consumer i.e tussock larvae, hence birds would be the secondary consumers.

Therefore, Scientists count the number of organisms in the tallgrass prairie. The trophic level would you expect to contain the smallest number of organisms is Tertiary consumers. Thus, option D is correct.

Learn more about Tertiary consumers on:

https://brainly.com/question/23094521

#SPJ6

NASA scientists have discovered a new planet which is approximately the same size as Earth but the mass is half as much as Earth’s. How would the weight of an astronaut on this new planet compare to his weight on Earth?

Answers

Answer:

Weight will decrease

Explanation:

1kg=10N

1/2kg=10/2N

0.5kg=5N

the astronauts weight will be reduced to half of it

hope it helps:)

Plants vs animal Behavior Examples

Answers

Answer:

Behavior is the way that all organisms or living things respond to stimuli in their environment. Stimuli include chemicals, heat, light, touch, and gravity. For example, plants respond with growth behavior when light strikes their leaves.

Examples of this kind include the nest-building behavior of birds and the dam-building behavior of beavers. Imprinting. An example of animal behavior that combines instinct and learning is imprinting, often seen in birds such as geese and ducks.

Explanation:

who is 27tb2926 and why is the person so hard to find

Answers

Answer:

I honestly have no clue. Sorry

Explanation:

Easy 15 points! Please put an explanation
How many atoms of oxygen are left after synthesizing oxygen molecules?

Answers

Answer:

Explanation:

2.

facts about precipitation maybe like 2???

Answers

Answer:

1. In meteorology, precipitation is any product of the condensation of atmospheric water vapour that falls under gravity.

2. The main forms of precipitation include drizzle, rain, sleet, snow, graupel and  hail.

3. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor, so that the water condenses and "precipitates".

Explanation:

In the light-I defendant reactions of photosynthesis

Answers

Answer: HOPE THIS HELPS!

In the light-independent reactions or Calvin cycle, the energized electrons from the light-dependent reactions provide the energy to form carbohydrates from carbon dioxide molecules. The light-independent reactions are sometimes called the Calvin cycle because of the cyclical nature of the process.

Explanation:

Will give brainest!!!!
What part of the brain controls the activity level in the body that makes us excited during a competition?

a) The pheromones

b) The adrenal glands

c) The reticular formation

d) The pituitary gland

Answers

Answer:

adrenal glands

Explanation:

they produce adrenaline

Both primary and secondary succession start by producing soil. True False

Answers

Answer:

True

Explanation:

Answer: false

Explanation:

Under what conditions can aerobic respiration be used as a means to generate the ATP needed to carry out cellular processes? (4 points)
Oxygen is absent; electron transport chain is not used.
Oxygen is absent; electron transport chain is used.
Oxygen is present; electron transport chain is not used.
oxygen is present; election transport chain is used,

Answers

Answer: oxygen is present; electron transport chain is used

Explanation:

When two cars collide which of the following is NOT evidence that energy is being transferred? A: a sound is produced
B: the cars changed direction
C: the drivers attempt to stop before the accident
D: the cars changed speed

Answers

Answer:

C: the drivers attempt to stop before the accident

Explanation:

the correct answer is c

A glacier advanced 12 feet during a 16-day period in January. The same glacier advanced 18 feet during a 24-day period in February.


Are the ratios of feet to days proportional for these two periods of time?


Drag and drop to correctly complete the statement.

Answers

Answer:

3 feet : 4 days  

Explanation:

Ratio of feet to days in January:   Ratio of feet to days in February:

        12 feet to 16 days                            18 feet to 24 days

Now let us reduce both to the lowest terms and compare;

 Divide by 4                                              Divide by 6

    3 feet : 4 days                                     3 feet : 4 days  

For both time periods, the ratio of feet to days are the same.

Answer:

proportional

Explanation:

I took the test

describe the condition where lactase is not available pls uwu

Answers

Answer:

Lactose intolerance

Explanation:

Lactose intolerance occurs when your small intestine doesn't produce enough of an enzyme (lactase) to digest milk sugar (lactose)

What happens to a newly created
mountain as a result of weathering and erosion?

Answers

Answer:

Recent research has led to important new insights into how these most ... Mountains are created and shaped, it appears, not only by the movements of the ... uplift to a gradual slide into "old age" caused by slow but persistent erosion. ... Convergence of tectonic plates generally occurs in one of two ways.

Explanation:

Answer:

it desolves

Explanation:

i dont really knoe (=

Explain why it is important for progesterone to be released after ovulation. [3]

Answers

Answer:

Progesterone is the hormone released after ovulation. It is required to prepare the uterus to receive an embryo, should conception have occurred and having adequate levels after ovulation is essential in this process.

Explanation:

Other Questions
Nikola buys a bouquet of 8 sunflowers for $18.What is the cost of 1 sunflower? Can someone help me with number 4 will award brainliest 5+= 23What the integer that makes the following addition sentence true Translate: Mary bought them (pizzas) for him.Mary se las compr.Mary le las compr.Mary compr las le.Mary les las compr. HURRY PLEASE HELP!!!! brainliest if correct! During Reconstruction, Southerners who owned plantations farmed their fieldsA: by hiring formerly enslaved workers.B: by investing in farm machinery.C: by renting plots of land to farmers.D: by selling land to tenant farmers. Simon purchases a bond, newly issued by Amalgamated Corporation, for $1000. The bond pays $60 to its holder at the end of the first and second years and pays $1,060 upon its maturity at the end of the third year. a, What are the principal amount, the term, the coupon rate, and the coupon payment for simon`s bond? b, After recieving the second coupon payment (at the en of the second year ), simon decides to sell his bond in the bond sell market. what price can he expect for his bond if the one-year interest rate at the time is 3 percent? 8 percent? 10 percent? c, Can you think of a reason that the price of simon`s bond after two years might fall below $1000, even though the market interest equals the coupon rate? Can someone please help me, I really need it Which expression is equivalent to(3) ?(-3)^2HELP PLEASE The side of a square is Two raised to the seven halves power inches. Using the area formula A = s2, determine the area of the square. Pick a career and write a hook sentence that will get the reader as excited about thatcareer path as you are.Hook Sentence: How do you find the area and perimeter of a rectangle. And how do you find the area and perimeter of a square? Jos y yo _________ amigos. Courtney needs to go to the library, the doctor's office, and her friend's house. How many different ways can she make the stops? Explain human impacts on the environment. Give examples. Q2) The graph shows the speed of a firework shell during a flight of 20 seconds:250200150(s/u) paads10050O2468101214161820Time (s)a) Work out the rate of change during the first 4 seconds.b) Work out the rate of change between 8 seconds and 12 seconds. The horizontal axis in the sampling distribution of ModifyingAbove p with caret represents all possible sample proportions from a simple random sample of size n. Bold (a )What percent of sample proportions results in a 90% confidence interval that includes the population proportion? Bold (b )What percent of sample proportions results in a 90% confidence interval that does not include the population proportion? Which choice will correct the sentence? This cake is so--eww gross, a bug! A. a dash in a place of the exclamation pointB. No change because it is correctC. a comma in place of the dash ANAGNOS: . . . It will no doubt be difficult for you there, Annie. But it has been difficult for you at our school too, hm? Gratifying, yes, when you came to us and could not spell your name, to accomplish so much here in a few years, but always an Irish battle. For independence.(He studies ANNIE, humorously; she does not open her eyes.)This is my last time to counsel you, Annie, and you do lack some by some I mean all what, tact or talent to bend. To others. And what had saved you on more than one occasion here at Perkins is that there was nowhere to expel you to. Your eyes hurt?ANNIE: My ears, Mr. Anagnos.(And now she has opened her eyes; they are inflamed. Vague, slightly crossed, clouded by the granular growth of trachoma, and she often keeps them closed to shut out the pain of light.)ANAGNOS [SEVERELY]: Nowhere but back to Tewksbury, where children learn to be saucy. Annie, I know how dreadful it was there, but that battle is dead and done with, why not let it stay buried?Which of these statements provides the best summary of the scene?Anagnos notices that Annies eyes are closed, and he discusses her life in Tewksbury and her time at Perkins.Anagnos praises Annies work at Perkins and mentions her previous time in Tewksbury, a town on the Ipswich River.Anagnos is cruel as he expresses doubts about Annies ability to leave Perkins and begin teaching.Anagnos describes Annies progress at Perkins and her strong will, and he expresses concerns about her attitude. What is one possible reason silphium disappeared What was her speed?The graph shows the relationship between the number ofminutes Maria spent jogging on a treadmill and thedistance she jogged.Ty Miles on the Treadmill980.1 mile per minute05 mile per minute5 miles per minute10 miles per minuteDistance on miles)5 10 15 20 25 30 35 40 45 XNumber of Minutes