What is phase change? How does matter change in phase?



Answer ASAP pls :(

Answers

Answer 1

Answer:

when the chemical composition of a substance change and it is not reversible it is called phase change.for example: turning milk in to yogurt


Related Questions

a double carbon-carbon bond is found in a molecule of

Answers

Answer:

ethene

Explanation:

as in ethene there is presence of double carbon which is commonly known as alkene group

write a ground state electron configuration for each neutral atom

Pb
Sr
U
N
Ag
Ti
Ce
CI
Hg

please help me​

Answers

Answer:

Pb[lead] [Xe]4f^145d^106s^26p^2

U[uranium] 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4e^14 5d^10 6p^6

7s^2 5f^4

This notation can be written in core notation or noble gas notation by replacing the

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4e^14 5d^10 6p^6

7s^2 5f^4

with the noble gas [Rn].

[Rn]7s25f4

N[nitrogen] The full electron configuration for nitrogen is 1s^2 2s^2 2p^3.

Ti[titanium] Ti2+:[Ar]3d^2

Ti:1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2

1s^2 2s^2 2p^6 3s^2 3p^5 = 17 electrons

(1) electron gain will result to a

negative charge (−), and

(2) electron loss will result to a positive charge (+),

1s^2 2s^2 2p^6 3s^2 3p^6 = 18 electrons

Hg[mercury] You should then find its atomic number is 80. It has a Xe core, so in shorthand notation, you can include [Xe]instead of

1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6 4d^10 5s^2 5p^6,

for 54 electrons. For the 6th row of the periodic table, we introduce the 4f orbitals, and proceed to atoms having occupied 5d orbitals. We, as usual, have the ns orbitals, and n=? for the 6th period?

Mercury has a regular electron configuration. It becomes:

[Xe]4f145d106s2

Explanation:

socratic.org helped me! I'm really sorry if this is wrong!

4. Which elements have a completely full outermost energy level?

Answers

Answer:

Helium (He), neon (Ne), and argon (Ar), as group 18 elements, have outer electron shells that are full or satisfy the octet rule. This makes them highly stable as single atoms. Because of their non-reactivity, they are called the inert gases or noble gases.

Explanation:

can i get brainliest

Why is fluorine more reactive than and bromine

Answers

Answer:

- The Valence/Bonding Electrons (whatever name you address them as) in Flourine are closer to the nucleus than the Valence/Bonding Electrons are in an atom of Bromine.

Explanation:

Hopefully this was helpful!

do not delete i just need help

Answers

Answer:

A. prokaryotic cell

Explanation:

We can easily identify the diagram as prokaryotic cell by the capsule shown. These organisms mostly have capsules.

Rationalize the action of open burning​

Answers

Answer:

open burning adds do our global timer adding carbons ,methane etc. to our atmosphere

also open burning is burning of unwanted material in the open air where smoke and toxins fumes are released into the atmosphere directly

Explanation:

i used the amazing internet

how many electrons can there be in the 2p subshell?

Answers

Answer:

6 possible electron can fit into the 2p subshell

what is the strongest type of intermolecular forces present between a stearic acid molecule and a water molecule?

Answers

hydrogen bonding and dipole-dipole forces.

The bond and the force present between molecules is called intermolecular force. A hydrogen bond is present between the stearic acid and a water molecule.

What are hydrogen bonds?

Hydrogen bonds are the intermolecular force that forms a dipole-dipole interaction with an electronegative atom in the presence of the lone pair of electrons.

In stearic acid, [tex]\rm C_{18}H_{36}O_{2}[/tex], hydrogen bonding exists between the oxygen and the hydrogen atom of the molecule.

Therefore, a hydrogen bond is present between stearic acid and the water molecule.

Learn more about intermolecular force here:

https://brainly.com/question/25359736

please help me get this done ​

Answers

Answer:

I believe tha answer is travels at the same speed of light

Explanation:

hope this helps

2. Some water returns to the air from lakes and the oceans. This process is called: A. Evaporation B. Condensation C. Groundwater

Answers

Answer:

A. evaporation

Explanation:

Answer:

This process is called (A) evaporation.

Evaporation is the process is where water turns into a vapor or air.

I hope this helped at all.

1340.40 grams of Iron is made to react with nitric acid, find mass of ferri nitrite produced. Use the given equation 2 Fe + 6HNO3 2Fe (NO3 + 3H₂ ​

Answers

The mass of ferric nitrate, Fe(NO₃)₃ produced from the reaction given the data is 5792.44 g

Balanced equation

2Fe + 6HNO₃ –> 2Fe(NO₃)₃ + 3H₂

Molar mass of Fe = 56 g/mole

Mass of Fe from the balanced equation = 2 × 56 = 112 g

Molar mass of Fe(NO₃)₃ = 56 + 3[14 + (16×3)] = 242 g/mole

Mass of Fe(NO₃)₃ from the balanced equation = 2 × 242 = 484 g

SUMMARY

From the balanced equation above,

112 g of Fe reacted to produce 484 g of Fe(NO₃)₃

How to determine the mass of Fe(NO₃)₃ produced

From the balanced equation above,

112 g of Fe reacted to produce 484 g of Fe(NO₃)₃

Therefore,

1340.4 g of Fe will react to produce = (1340.4 × 484) / 112 = 5792.44 g of Fe(NO₃)₃

Thus, 5792.44 g of Fe(NO₃)₃ were obtained from the reaction

Learn more about stoichiometry:

https://brainly.com/question/14735801

#SPJ2

Charlotte has some copper sulfate solution. She wants solid copper sulfate. Which technique should she use?

Answers

Answer:

She should use the crystalization technique

Explanation:

First, the copper sulfate solution should be filtered to clear any impurities.

By heating the solution of copper sulfate on a china dish, the excess water in the solution evaporates and leaves behind a saturated solution of copper sulfate.

Upon cooling this saturated copper sulfate solution, crystals of solid copper sulfate will be formed on the china dish.

In solid form, copper sulfate appears in triclinic-shaped crystals.

Which of these describes an exothermic reaction? Please help, today is the last day to submit anything.

Answers

Answer:

A, Heat is released as the reaction happens.

Explanation:

Exothermic reactions release heat and/or light and is a reaction in which the overall enthalpy is negative. The one your mouse is hovering over explains Nuclear Fission. The third one explains an endothermic reaction, as heat is absorbed in the reaction. The product being cold is actually one of the key characteristics of an endothermic reaction. Two liquids being mixed that forms a solid is called a precipitate.

2KClO3 —> 2KCl + 302 this equation represents both a ___ reaction AND a(n) ___ reaction.

A. combustion; decomposition
B. single replacement; combustion
C. combustion; oxidation-reduction
D. decomposition; oxidation-reduction

Answers

Answer:

option D--Decomposition; oxidation-reduction

Answer: A. Combustion; decomposition

Explanation: I took it on a quiz and got it right!

Explain why silver iodide, Agl, a compound used in
photography, has a much higher melting point than
vanillin, C,H,O3, a sweet-smelling compound used
in flavorings.

Answers

Answer:

Vanillin consists of molecules. The attraction between particles of silver iodide is stronger than the attraction between particles of vanillin.

The silver iodide a compound used in photography because,

It affected by light.It is easily stick on the surface of photographic plate or film.

Why melting point of silver iodide has higher melting point than vanillin?The ionic compound is strong than covalent compound .So, ionic compound require more energy as compare to covalent compound to break their bond between them. So, melting point of ionic compound is higher than covalent compound .Since, silver iodide is ionic compound and  vanillin covalent compound.Therefore, melting point of silver iodide is higher than vanillin.

learn about melting point,

https://brainly.com/question/25777663

#SPJ2

Can yall assist me with this lab? It is really screwing me up... No spam!! the only part that I need is the last page. I will mark brainliest if you get it right. If you spam, or give an intentionally incorrect answer, I will report you to the moderators, and have your account blocked.

Answers

Answer:

You can block me I don't care ;-; Ive actually been wanting to be blocked because I don't want my account on brainly anymore but they cant understand that I used my school email for this account and my school email doesnt reseave emails not from the school and I cant change the email to a different one so I cant reset my password so I cant delete my account..

Explanation:

What is the relationship between the concentration and the rate of the reaction?

negative
neutral
positive

Answers

Answer:

When the concentration of all the reactants increases, more molecules or ions interact to form new compounds, and the rate of reaction increases. When the concentration of a reactant decreases, there are fewer of that molecule or ion present, and the rate of reaction decreases.

Answer:

Negative

Explanation:

what is neutralisation??​

Answers

Answer:

Acid + Base -------> Salt + Water

Explanation:

The reaction between an acid and bases is called a neutralization reaction. The result of the reaction is salt and water. For example, when hydrochloric acid(acid) and sodium hydroxide(base) react they form sodium chloride(salt) and water. Also, heat is evolved.

Example:

HCl + NaOH ----------> NaCl + H2O

HCl is hydrochloric acid.

NaOH is sodium hydroxide which is a base.

NaCl is sodium chloride which is a salt.

H2O is water.

define suspension with example:​

Answers

Suspension in science refers to a mixture where a solid particle does not dissolve in a liquid solution. ... Examples of suspended solutions include salt water, sand in water, and muddy water.

What do you put in the cavity of an unstuffed turkey?

Answers

Answer: Stuffing


hope this help

What is the mass of 2.49 moles of sucrose?

Answers

your anwser would be 342 gmol  Please mark branliest

Just get out that Periodic Table of the Elements, find the atomic masses for each atom, and add them up!

Carbon = 12

Hydrogen = 1

Oxygen = 16

C=12×12=144

H=1×22=22

O=16×11=176

Sucrose =144+22+176=342gmol

the heat energy absorbed or released during a chemical reaction is known as:

Answers

Electricity
Light
Sound
Heat

The diagram represents an atom of an element key
e = electron = 4
n = neutron = 5
p = proton = 4
Which symbol gives this information?

Answers

Beryllium
Because it’s number 4 on the periodic table and the number of electrons = proton=atomic number

Help here plz you guys

Recognize: What happens if a hypothesis is not supported.

Explain: Why do scientists practice scientific inquiry?

Describe: The behaviors scientists use in their work.

Answers

Answer:

If the initial hypothesis is not supported, you can go back to the drawing board and hypothesize a new answer to the question and a new way to test it. ... Either way, the process of experimentation often leads to whole new questions to explore.

Scientific inquiry uses evidence from observations and investigations to create logical explanations to answer questions related to science. Scientific inquiry is different from the scientific method. ... Scientific inquiry helps you think outside the box to understand the natural world.

Unlike social scientists, behavioral scientists collect empirical data and use experimental methods, including testing, controls and manipulated settings.

Explanation:

How does the bear help Atalanta?

Select 3 correct answer(s)
Question 2 options:

The bear brings Atalanta to shelter.


The bear guards and protects Atalanta.


The bear brings Atalanta food.


The bear teaches Atalanta to hunt.

Answers

your answers are:

B) The bear guards and protects Atalanta

C) The bear brings Atalanta food

D) The bear teaches Atalanta to hunt

Brainliest?

1. How much energy is required to heat 32.5g of water from 34°C to 75°C?

Answers

Answer:

5.850 kJ (of heat energy)

Explanation:

What we need:

[] The mass of the material = m = 32.5g  

[] The temperature change that occurs = ΔT = 43

() 75 - 34 = 43  

[] The specific heat capacity of the material = c

() This is the amount of heat required to raise 1 gram of that substance by 1°C

() For water, this is 4.186Jg°C

The equation to use:

Q = m * c * ΔT

Q = 32.5 * 4.186 * 43

Q = 5849.935 J

Q = 5.850 kJ

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

[tex]\boxed {\boxed {\sf 5569.85 \ Joules}}[/tex]

Explanation:

We are asked to find how much energy is required to heat a sample of water.

We will use the following equation:

[tex]q= mc \Delta T[/tex]

The mass of the water is 32.5 grams. The specific heat capacity of water is 4.18 Joules per gram degree Celsius.

The change in temperature is the difference between the final temperature and the initial temperature. The water's temperature is raised from 34 degrees Celsius to 75 degrees Celsius.

ΔT= final temp - inital tempΔT = 75 °C - 34 °C = 41 °C

Now we know all three variables:

m= 32.5 g c= 4.18 J/g °C ΔT = 41 °C

Substitute the values into the formula.

[tex]q= (32.5 \ g)(4.18 \ J/g \textdegree C)(41 \ \textdegree C)[/tex]

Multiply the first 2 numbers together. The units of grams cancel.

[tex]q= 135.85 \ \ J/ \textdegree C(41 \ \textdegree C)[/tex]

Multiply again. This time, the units of degrees Celsius cancel.

[tex]q= 5569.85 \ J[/tex]

5,569.85 Joules of energy are required.

which model would represent asexual reproduction? explain you reasoning

Answers

Answer:

Answer)   The first box represent the budding type of asexual reproduction . In budding due to the cell divison at the particular place in the organism , new  individual will produced.

Second picture represent the budding in hydra. Budding is also a asexual reproduction.

Third type of asexual reproduction is found in plants  it is vegetative reproduction.

Fourth is Binary fission . This is also a type of asexual reproduction, in which nucleus dicied into two new daughter cell via mitosis.Explanation:

PLEASE HELP!!
In the formula
1N2 +3H2 → 2NH3 + 1H2
1 diatomic nitrogen (1N2) and 3 diatomic hydrogen (3H2) produce 2 ammonia (2NH3) with 1 diatomic hydrogen (1H2) left over. How can you change the formula so no diatomic hydrogen (H2) is left over?

(1 point)

Remove a H2 molecule from the left side of the equation.


Remove a NH3 molecule from the right side of the equation.


There is nothing that can be done to use the leftover molecules.


Add another N2 molecule to the left side of the equation.

Answers

Answer:

Remove a H2 molecule from the left side of the equation.

Explanation:

i took the quiz and got it right

What happens when you drop an egg on the ground from about 6 ft high?

Answers

Answer:

Gravity causes an object to fall to Earth when dropped. When the egg hits the ground with a given force, the ground exerts the same force back on the egg. If too large a force is delivered to the egg shell, the egg will crack.

Explanation:

does The Bohr model of the atom correctly predicts the energy levels of the hydrogen atom, which has a single electron.

Answers

Answer:False. The Bohr model correctly predicts energy levels of hydrogen and hydrogen-like atoms.

Explanation:

Other Questions
Solve for the missing variable Assignment: Give a detailed response to this prompt. Write MORE THAN 5 sentences. Make sure you are addressing the prompt and stay on topic.PROMPT:Your friend, Susannah, manages a sandwich shop. She collects data on the number of turkey sandwiches sold per day for a week. Explain to her how to find the mean, median, mode, and range of the number of turkey sandwiches sold. How that would be helpful when she orders new turkey sandwich makings? Which measure do you think would be the most helpful for her and why? PLZZZ HELP create a brainstorm of 20 words based on the topic rain. Then, use the words from the brainstorm to write a 8 sentence expository Paragraph. BrainstormDraftTopic Sentence: What is rain? Statement: Rain is water that is cold, wet, and clear liquids that comes from clouds.Detail/Explain: Did you know rain is created by the water cycle?StatementDetail/Explain: StatementDetail/Explain: Closing: how can surgeons help to limit nosocomial infections? In eukaryotic mRNA, the parts that remain after processing and are translated into amino acid sequences are called the _____. Who where the men who signed the declaration of independence Makeup is a cosmetic that only women use. Please select the best answer from the choices provided T F. in preparing the operating activities section of a statement of cash flows using the indirect method, net income should be adjusted for What year did the united states issue the declaration of independence? d) A 2-kg book is held 1 m above the floor is for 10s. The work done on the book is zero and its potential energy is 20 J. Is it true or false? Where was the bomber planning to set the next bomb in the westing game book? find the value of (-7/10)(2/5) By 1775, of the 13 Colonies'population was of British descent.A. halfB. a quarterC. a third Paul Wong (2017) used the term ______ to describe well-being derived from the spiritual/existential dimension. The ratio of the number of baskets made by Salem to the number of baskets made by Khaled is 3 to 4. Salem made 12 baskets. How many baskets did Khaled make? Do you share your knowledge? How do you think your sharing nature helps you in the long run? Explain All nine essential amino acids can be found in meat. By employing the nutritional principle of complementarity, a vegetarian gets all nine. What is complementarity why it is important that the product of mitosis are two identical daughter cells. What can I do bhsunsjsisisksksksjsjsjsnsms Pendulum makes 12 complete swings in 8 seconds, what are its frequency and period on earth