Chemistry Middle School

The imagine below shows an atom arrangement.
Why is it considered a mixture?

a) it’s composed of 1 kind of atom
b) it’s a physical combination of two or more different substances
c) it’s composed of 2 or more types of elements that are chemically combined.

The Imagine Below Shows An Atom Arrangement. Why Is It Considered A Mixture?a) Its Composed Of 1 Kind

Answers

Answer 1
I believe the answer is c
Answer 2
The answer is B. Mixtures are not chemically combined and only elements have 1 kind of atom.

Related Questions

HELP ASAP!!!!!! please

Answers

Answer:

F2 gg

Explanation:

What is the mass of the ethyl alcohol that exactly fills a 400.0 mL container? The density of ethyl alcohol is 0.789 g/mL.

Answers

Answer:

g = (0.789 g/mL) (200.0 mL) = 158

The mass of ethyl alcohol that exactly fills 400 ml of container is 315.6 grams.

How is mass related to density?

Formula of density is given as , density =mass/volume

∴mass=density×volume

From the formula it is evident that density and mass are directly proportional while density and volume are inversely proportional.

From the given data, volume=400 ml and density =0.789 g/ml

∴by the formula,mass=density×volume

mass=0.789×400

mass=315.6 g

Mass and volume are extensive properties that depend on the amount of substance while density is an intensive property and does not depend on amount of substance.

Intensive properties  are properties which are independent,wherein size of particles does not change.These properties cannot be easily computed and are not easily identifiable.

Learn more about intensive properties,here:

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Hey Guys... I need help again...
Having freckles (F) is dominant over not having freckles (f). A parent with freckles is crossed with a parent without freckles. The Punnett square shows the possible genotypes of the offspring.


What is the genotype of each square?

A: FF Ff ff

B: FF Ff ff

C: FF Ff ff

D: FF Ff ff

Answers

Answer:

A: Ff

B: ff

C: Ff

D: ff

Explanation:

You basically look at the box it's asking for, let's use A as an example. On the top where the A column is there's F, so that's one of the thingys I forgot what they're called. Next look at the row of A, and there's f. Put the 2 together and you get Ff. Reminder that any uppercase ones come first.

The answer is
A=Ff
B=ff
C=Ff
D=ff

Yikes ;-;
I’m stuck- Help-

Answers

Answer:

I'm pretty sure this is potential energy

Explanation:

Potential energy is energy held by an object when its let go its kinetic energy

The correct answer is potential energy.

Potential energy is the point where the object is still and has no type of movement. The energy remains constant until ready to be gained or lost.

Hope this helps!

When we talk about substances dissolving we usually follow the rule " like disssolves like". What does that mean? (selct TWO correct answers)


Nonpolar molecules will dissolve other nonpolar molecules


Nonpolar molecules will dissolve polar molecules


Polar molecules will dissolve nonpolar molecules


Polar molecules will dissolve other polar molecules

Answers

Answer:

hope it helps

Explanation:

Polar molecules will dissolve nonpolar molecules

Polar molecules will dissolve other polar molecules

What is the connection between the solar system and the Earth

Answers

earth is part of the solar system..?
The earth is located in the solar system.

FIRST TO ANSWER GETS 30 POINTS


Classify the following as physical, biological, applied science

1. Chemistry 7. Parasitology

2. Zoology 8. Volcanology

3. Engineering 9. Genetics

4. Metallurgy 10. Pasteurization

5. Medicine 11. Aviation

6. Microbiology 12. Bacteriology

Answers

Explanation:

Chemistry is physical

Zoology is biological

Engineering applied

Metallurgy applied

Medicine biological

Microbiology biological

Parasitology biological

Volcanology physical

Genetics biological

Pasteurisation biological

Aviation physical

Bacteriology biological

which two statements are true for both compounds and mixtures
A. Their particles are held together by chemical bonds
B. Their particles all have the same chemical formula
C. They are made up of more than one type of atom
D. They can be separated into two or more elements

Answers

the answer is C because both compounds and mixtures are made up of two or more substances
The answer is c since it OFCOURSE has many atoms

The imagine shows the atomic arrangements of four different substances.

Which are compounds and why?

Answers

The answer would be water , carbon dioxide and methane because they all contain more than one element.

Water-H2O
Carbon Dioxide-CO2
Methane-CH4
water,carbon dioxide and methane

What do you understand by Biological nitrogen fixation? PLEASE ANSWER RN

Answers

Answer: Because it is the principal source of the nitrogen in the soil, nitrogen that plants need to grow, nitrogen fixation is one of the most important biochemical processes on Earth. Nitrogen within living organisms is eventually decomposed and converted to atmospheric nitrogen.

Answer: Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia or related nitrogenous compounds in soil.

Explanation:

What is the center of a plant cell? The actual question is what’s the center of an onions root tip?

Answers

The center of a plant cell is a nucleus!
A nucleus! That is where the plants DNA is stored :)

which of these pairs of atoms are isotopes
A: scandium-46, titanium-46
B: iron-56, sodium-24
C: chlorine-35, chlorine-37
D: sodium-24, magnesium-24

Answers

The answer is C, because isotopes are two or more of the same element with different atomic masses; so, in this case, the two chlorine atoms are the same molecules but they have different atomic masses, as the “35” and “37” say.

Taking into account the definition of isotopes, the correct answer is option C: chlorine-35, chlorine-37

First of all, all atoms are composed of a central nucleus in which there are positively charged particles, the protons, and neutrally charged particles, the neutrons, around which other negatively charged particles that are electrons move.

That is, atoms are made up of a nucleus (made up of protons and neutrons) and a shell made up of electrons.

On the other side, isotopes are atoms whose atomic nuclei have the same number of protons but different numbers of neutrons.

The atomic number (Z) indicates the total number of protons in the nucleus of a given atom, while the atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus.

So, in other words, each isotope of the same element has the same atomic number (Z) but each has a different mass number (A). This means that the different isotopes of the same atom differ from each other only by the number of neutrons. So if a neutron is added to an atom, it becomes an isotope of that chemical element.

So, in this case, the correct answer is option C: chlorine-35, chlorine-37, because the two chlorine atoms correspond to the same element but have different atomic masses, whose values ​​are 35 and 37.

Learn more:

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Example of Scientific question?

Answers

Explanation:

how to understand the difference between acid and base

A good scientific question builds on what you already know. For example: “Will fertilizer make grass grow greener?” is not as good as “What types of fertilizer will make grass grow greener?” 4. A good scientific question, when answered, leads to other good questions

What is the temperature range on the moon?

Answers

Answer: Daytime temperatures near the lunar equator reach a boiling 250 degrees Fahrenheit (120° C, 400 K), while nighttime temperatures get to a chilly -208 degrees Fahrenheit (-130° C, 140 K).

Identify the following as examples of abiotic or biotic factors. Mark “A” for abiotic factors or “B” for biotic factors

_________Climate

_________Grass

_________Seaweed

_________Soil

_________Coyote

_________Altitude

_________Precipitation

_________Termite

_________Spider

_________Sunlight

Answers

Answer:

Explanation:

Climate - Abiotic

Grass - Biotic

Seaweed - Biotic

Soil - Abiotic

Coyote - Biotic

Altitude - Abiotic

Precipitation - Abiotic

Termite - Biotic

Spider - Biotic

Sunlight - Abiotic

A
B
B
A
B
A
A
B
B
A
(Those are the answers)

Which definition is correct?

a physical change creates a new substance because bonds are broken or formed
a physical change can happen without changing any characteristics of the substance
a chemical change occurs when the substance remains the same but the shape, or other physical characteristics change
a chemical change produces a new substance by breaking and forming new bonds

Answers

Answer:

last one is correct

Explanation:

bcoz when a reaction takes place there is the formation of new products with the help of old one .

Imagine that the moon’s orbit wasn’t elliptical and it that it did not orbit the earth at a 5 degree angle. How would this change the predictability of an eclipse happening every month?

Answers

Answer:

Without the tilt, lunar eclipse will happen every month.

Lunar eclipse will happen each month, because of this.

Describe the chemical reaction based on the chemical equation below. Also, explain whether the equation is balanced.

Answers

I don't see any chemical Equation

(Mark as Brainiest)

Answer:u dont have no picture ofbit u need to show us whst it is

Explanation:

Ong ohoje is glitch ant type hate when it do thsi

Based on your knowledge of how the greenhouse effect works, why does the level of carbon dioxide affect the global temperature?
This is for science, I need it in my own words.
I will give brainless.

Answers

Answer:

bruh

Explanation:

The greenhouse effect traps carbon dioxide

Ponds, streams, and forests are all examples of which ecology term? A: Niches B: Populations C: Ecosystems D: Producers

Answers

Answer:

Ecosystems

Explanation:

C is the answer ecosystems

300 g of requires 30000 J of thermal energy to raise the temperature from 25 °C to 85 °C, what is the heat capacity of water? ANSWER ASAP PLEASE

Answers

I am not sure abt my answer. Did it in a rush. Pls correct me if im wrong

According to the concept of specific heat capacity, the heat capacity of water is 1666.67 J/Kg°C.

What is specific heat capacity?

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT

Substitution of values in the above equation, c=30000/0.3×(85-25)

c=1666.67 J/kg°C

Thus, the heat capacity of water is 1666.67 J/Kg°C.

Learn more about specific heat capacity,here:

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Get ready for the wave of screenshots :>

Answers

Answer:

okay let me know when i can help, ill be happy too help

Screenshots of what? Ooga booga snooga

What is meant by thermal heat capacity?

Answers

Answer:

The quantity of heat necessary to produce a unit change of temperature and a unit mass of a material.

Answer:

thermal capacity is defined as the quantity of heat necessary to produced a unit change of temperature in a unit Mass of material

Hammer orchids are plants with flowers that are highly modified to resemble a female thynnid wasp (i.e., a wasp of the Thynnidae family) and can only be pollinated by thynnid wasps. Female thynnid wasps cannot fly, but males can. When the female is prepared to mate, she will climb up a tall plant or a blade of grass and wait for a male to appear. Males will pick up the female from her perch and mate with her in flight.


Given this information, in three to five sentences, describe these details:

one other feature of the hammer orchid that could attract its pollinator
how the orchid’s flower adaptation could lead to pollination
why you believe a plant would have more reproductive success with either a specialized pollinator or multiple pollinators


i need help!! y'all wht should i put?

Answers

Answer:

in side

Explanation:

Please help, I’ll fr give 5 stars and Brainliest ;-;

Answers

Omg what grade are you in lol
i think the average is 1,450 but i might be wrong, mainly because the lowest point is 100 and the highest point is 2,800 which makes the average 1,450

Brainliest answer please im not wasting my points for no reason please this is the last one and then im done please thank you
What do the solid lines on the topographic map represent?


A. changes in rock types

B. lines of equal pressure

C. lines of equal elevation

D. changes in vegetation

Answers

Answer: I think it’s C

Explanation:

Its B Im Pretty Sure

Speed is defined as the distance an object travels per unit of time. Which TYPE of speed is observed when you look at the speedometer of a car?

Question 7 options:

A)
Constant Speed
B)
Instantaneous Speed
C)
Average Speed

Answers

B.) Instantaneous speed because the speedometer shows how fast you are going at that giving time .
The answers is B because of the speedometer

Two cars are moving with the same speed. The VELOCITY of both cars will be the same if the cars are moving in:

1. circles.
2. parallel paths.
3. straight lines.
4. the same direction.

Answers

Answer:

4. the same direction

Explanation:

they would have the same speed adn the same direction.

Velocity is speed+direction

Yea I think it depends on the direction the cars are going!!

When citric acid reacts with baking soda, a salt, water and a gas are produced. What is the name of the gas?

a) carbon dioxide
b) oxygen
c) sodium citrate
d) water vapor

Answers

c sodium citrate is the the same

Answer:

The answer is A

Explanation:

Identify each picture.
Answer Choices are in attachment.

Answers

Where are the answer choices
Other Questions
In a well-structured paragraph, evaluate the experimental design of the investigation into the osmolarity of different types of apples for adequate controls and measurement techniques . Which phrase best completes the diagram? The park has space for the base of the slide to be 7-feet wide. To keep the slide proportional to the model, what will the height of the slide be?The slide will have a height of feet. Ashley has a $80 gift card to her favorite coffee shop. Each day, she uses her gift card to buy the a coffee for $4.50. Aaron has a $60 gift card to the same coffee shop. Each day, he uses his gift card to buy an iced tea for $2.50. For what number of drinks purchased will Ashley's gift card balance be equal to Aaron's? A)9 drinks B)10 drinks C)D)11 drinks 12 drinks PLEASE HELP ASAP I WILL BE GIVING BRAINLIEST TO FIRST ANSWER!!!!Answer the questionsMonet was so inspired by the beauty of his water lily landscape that he created 250 oil paintings of them! Actually, if you travel to France, you can still visit his beloved garden and see the water lilies that inspired all 250 of the oil paintings he created. If you dont have the chance to make it to France, you can still see the beauty of his gardens through his landscape paintings. Though his water lilies are quite famous, Monet is perhaps most widely known for his important contributions to the Impressionist movement. Impressionist painters used thin brush movements to show how light appeared in their art at the very moment they were painting. Check out the picture of one of Monets water lilies What time of day do you think it is? What are some different types of brush strokes you can see in this piece of art? Which form of democracy was practiced in Ancient Greece at what point will the pH of the ocean start to decrease? Solve for s.2-2s=3/4s +13s= Which of the following groups would benefit or profit the most from theideas expressed in the excerpt? *Labor UnionsOProletariatBourgeoisieO Realists I dont understand helpppp What is the rate if change for y = x - 4 Can someone answer this what do I put How do shapes become forms? Did you title your lab report? Did you state the purpose of the investigation? Did you include a brief overview of the investigation?Materials and Procedure Did you make a list of materials? Did you include quantities and SI units? Did you present the steps of the procedure as a numbered list? Did you note any changes to the original procedure? For the reactions below, describe the reactor system and conditions you suggest to maximize the selectivity to make the desired species, D, which is a very small molecule. For full credit, support your suggestions with clear calculations, explanations and sketches where appropriate. Rates are in mol/L.s and concentrations are in mol/L. Reaction 1: A+B D -r1A= 10 exp[-8000 K/T]CACB Reaction 2: B+D U -r2B= 109 exp[-10,000 K/T]CBCD BELOW make sure to note highlighted question number for answers on Exam Paper. 4. Describe the reactor system and conditions: ___ Answer written on Exam paper AND in BB Im confused on this I need help please!!! The reaction between ethylene and hydrogen bromide to form ethyl bromide is carried out in a continuous reactor. The product stream is analyzed and found to contain 56.7 mol% C2H5Br and 10.3 mol% HBr. The feed to the reactor conains only ethylene and hydrogen bromide. Calculate the fractional conversion of the limiting reactant and the percentage by which the other reactant is in excess. If the molar flow rate of the feed stream is 265 mol/s, what is the extent of reaction Fill in the blank.the amount which an object accelerates depends on the mass of the object on the size of the ____ acting upon it I need help Im struggling Please help me Im being timed