An icecube is placed in the sun. Later there is a puddle of water. Later still the puddle is gone

Answers

Answer 1

Answer:

That's called an physical change which is an change in the state of matter

Explanation:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.


Related Questions

Golgi body function
Lysosome function
Mitochondria function
Vacuole function
Cell wall function
Chloroplast function
Ribosome function
Endoplasmic reticulum function

Answers

Explanation:

GOLGI BODY - transportation of lipids and steroids.

LYSOSOME - destruction of malfunctioning or worn out cell organelles.

MITOCHONDRIA - oxides glucose to give energy to the cell in a form of cellular respiration.

VACUOLE - FOOD VACUOLE for storage of food while WATER VACUOLE eliminates excess water by a process called OSMOREGULATION.

CELL WALL - provides rigidity for the plant cell.

CHLOROPLAST - pigmented organelle of the plant which functions to manufacture food by a phenomenon known as PHOTOSYNTHESIS.

RIBOSOME - synthesizes protein and enzymes.

ENDOPLASMIC RETICULUM - The ROUGH ENDOPLASMIC RETICULUM has RIBOSOMES attached to it while the SMOOTH ENDOPLASMIC RETICULUM has nothing attached, they transport proteins and enzymes

co2,nacl,hcl are all classified as what

Answers

Answer:

co2 oxide,nacl salt ,hcl acid

Elijah performed an experiment to explore the differences between chemical and physical changes. In which trial did Elijah observe the formation of new substances with different properties

Answers

Answer:

in the chemical trial.

Explanation:

If i blow up a ballon, tie it off, and release it, it will fall to the floor, why does it fall instead of float

Answers

Answer:

The balloon would fall because carbon dioxide, the gas you exhale and blew up with, is denser than air and therefore will fall. Helium however, is less dense than air and floats.

hope this helps :)

Convert 9.79 kilograms (kg) to decagrams (dg).
А
0.979 dg
B 97.9 dg
C979 dg
D
9,790 dg

Answers

Answer:

C) 979 dg

Explanation:

1 Decagram = 0.01 Kilogram, and 1 kilogram = 100 Decagram.

Hope this helps :)

Answer:

fsf

Explanation:

sdfsd

once an enzymatic reaction is completed, the enzyme releases what?

Answers

Answer:

Once an enzymatic reaction is completed, the enzyme releases substrates.

Explanation:

The enzyme will always return to its original state at the completion of the reaction. One of the important properties of enzymes is that they remain ultimately unchanged by the reactions they catalyze. After an enzyme is done catalyzing a reaction, it releases its products (substrates).

if the reactants of a reaction have an initial mass of 25g what should the mass of the products be

Answers

Answer:

It remains the same

Explanation:

The law of conservation of mass states that, during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants.

What was John Dalton's contribution to the development of the atomic theory?

A
Dalton recognized that tiny atoms combined to form complex structures.

B
Dalton recognized the presence of electrons around a nucleus.

C
Dalton recognized the presence of protons in the nucleus.

Answers

Answer:

A. Dalton recognized that tiny atoms combined to form complex structures.

Which ion below is NOT correct and what is wrong with it? Na^1+, Ca^1+, F^1-, P^3-​

Answers

Answer:

Na1+; Ca2+; F1-; P5- or P3-

Explanation:

helppppppppppppppppppppppppp

Answers

Answer:

lose 1 2+

Explanation:

I honestly don't know

Why are engineers called applied scientist?​

Answers

Answer:

Applied science is a discipline that is used to apply existing scientific knowledge to develop more practical applications, for example: technology or inventions. In natural science, basic science (or pure science) is used to develop information to explain phenomena in the natural world.

Answer:

• Because engineers apply science and its theories into practical situation

Take an example of;

A generator: When creating a generator, electromagnetic induction theorem is applied. [ self and mutual inductance ]

A plane: The wings are made in considerance of Bernoulli principle and viscous drag

[tex].[/tex]

HELLLPP!!!
what is a oxidation mean

Answers

A fast gain of oxygen

Describe the activities to prove that Liquid exerts pressure equally and perpendicularly in all direction ​

Answers

Step by step explanation
1.First take a bottle and fill it with water
2.mark points on the bottle in any level four directions perpendicularly
3.make a hole in the points you have marked
Observation
The liquid exerts pressure equally and perpendicularly in all directions

Hope this answer helps

For X + Y → XY, if [XY] is increasing at a rate 0.10 M s-1, predict the rate of depletion of both reactants.

Answers

It’s 819. UWu Jan thanks s whhakswn shoaakb

Which is a valid velocity reading for an object?
45 m/s
45 m/s north
0 0 m/s south
0 m/s
Save and Exit
Next
Sunt
Mark this and retum

Answers

Next is the answer to the question

What is the resultant force of a motorcycle travelling at 500 N with an air resistance of 50 N

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The resultant force is equal to :

[tex]500 - 50[/tex]

[tex]450 \: \: N[/tex]

LIST TWO REASONS WHY WE SHARE OUR RESULTS A SCIENTIFIC INVESTIGATION​

Answers

Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.

WILL MARK AS BRAINLIEST IF CORRECT
The temperature of an enclosed gas at constant pressure changes from 400 K to 100 K atm. What happens to the volume of the gas?

a
The volume will increase to 4 times its original volume.
b
The volume will stay the same.
c
The volume will decrease to 1/2 of its original volume.
d
The volume will decrease to 1/4 of its original volume.
e
The volume will increase to 2 times its original volume.

Answers

Answer:

a

Explanation:

they are directly proportional. if one goes down the other goes up while pressure is constant

what is the scientific notation of (41 e 23) (8.0 e 3)

Answers

Answer:b

Explanation:

A flagpole is an example of what type of pulley system?

A. Movable pulley
B. Fixed pulley
C. Block and tackle?​

Answers

Answer:

B

Explanation:

i learned the pulley system in school

Answer:

B. Fixed pulley 

Explanation:

Does someone know the combustion in a jacket potato???

Answers

Answer:

Some varieties of potato, such as Russet and King Edward, are more suitable for baking than others, owing to their size and consistency. Despite the popular misconception that potatoes are fattening, baked potatoes can be part of a healthy diet.[2]

The overall chemical reaction for photosynthesis
is shown below:
6CO2 + 6H2O → C6H1206 + 602
What mass of glucose (C6H1206) can form from
71.89 g CO2? (Molar mass of C6H1206 = 180.18
g/mol; molar mass of CO2 = 44.01 g/mol)
71.89 g CO2 =
Ig Cg H 1206
DONE

Answers

Answer:

49.05 g

Explanation:

6co2+6h20-c6h120+602

Can someone help please?

Copper occurs naturally as a mix of two isotopes: Copper-63 with a mass of 62.930 amu and copper-65 with a mass of 64.928 amu. The percent abundance of copper-63 is 69.09%.
Calculate the atomic mass of copper.

Answers

Take the weighted average of the individual isotopes.Explanation:63Cu has 69.2% abundance.65Cu has 30.8% abundance.So, the weighted average is 62.93×69.2% + 64.93×30.8% = 63.55 amu .If we look at the Periodic Table, copper metal (a mixture of isotopes but 63Cu and 65Cu predominate) has an approximate atomic mass of 63.55 g⋅mol−1 , so we know we are right.

Answer: 63.55

Explanation:

The attached chart shows the calculation.  The orange line points to the % abundance of Cu-65, which is the difference of 100% less the % Abundance of Cu-65 (since there are only 2 isotopes).

The weighted average contribution of each istope is calculated (blue arrow) and then summed to find the atomic mass of copper.

BaCO3(s) → BaO(s) + CO2(g)

(a) A student heated a 10.0 g sample of barium carbonate until it was fully decomposed.

(i) Calculate the number of moles of barium carbonate the student used.

moles of barium carbonate =

Answers

number of moles = mass

molar mass

BaCO3 molar mass = 197.34 g/mol

mass = 10g

n = 10/197.34

n = 0.05moles.

The number of moles of barium carbonate used are 0.05moles.

Please help!
Answer please!

Answers

Answer: a

Explanation: a

if a light wave has a wavelength of 5.80x10^-7 what is its frequency

Answers

Speed = v = 3×10⁸ m/s

Wavelength = λ = 5.8×10⁻⁷ m

Frequency = f  

v = fλ

Hence,

f = v/λ

f = 3×10⁸ / 5.8×10⁻⁷

f = 0.517×10⁸⁺⁷

f = 5.17×10¹⁴ Hz                                                                                                                                  

i hope this will help but if im wrong then it will be 5.16x10¹⁴

ANSWER ASAP PLS 50 POINTSS ;) ;)

Answers

Answer:

I would say D) A new substance is formed with different properties.

It doesn't nesisarally have to have a specific change (except mass), but it could be a wide variety of changes.

Answer:

A New substances  form with different properties

Explanation:

When two different chemical substances are combined, they form new substances with different properties. The properties may be modified and the substance formed may exhibit better characteristic than individual properties of its components. For example, when sodium and chlorine combine, they form sodium chloride. Sodium chloride has different properties than any of the constituents.

what is daltons theroy

Answers

Answer:

A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates: (1) Elements consist of indivisible small particles (atoms). (2) All atoms of the same element are identical; different elements have different types of atom. (3) Atoms can neither be created nor destroyed.

Explanation:

What are the Characteristics of handwriting?

Answers

Line quality: Examiners determine whether the letters flow in a smooth manner, or in an erratic or shaky way.

Spacing: Examiners determine whether the letters have equal spaces from each other or crowded.

Size consistency: Examiners check the consistency in terms of the ratio of the letter's height to its width.

Velocity has both speed and direction, so it is a what

Answers

Answer: Velocity is a mathematical vector. That means it has both a magnitude (speed) and a direction. Scientists need to consider an object’s velocity to calculate its momentum — its velocity multiplied by its mass. Scientists use measures of velocity in everything from figuring out how much rain is falling to sending a rocket to space.

Explanation: Hope this help:)

Other Questions
What is in bed but never sleeps? Which of the following are powers of the Judicial branch?1)revising the Constitution, reviewing laws, and deciding cases involving states' rights2)interpreting the Constitution, reviewing laws, and deciding cases involving states' rights3)interpreting the Constitution, reviewing laws, and deciding cases involving the military4)reviewing laws, interpreting the Constitution, and deciding cases involving impeachment Josh mixes blue and white paint to make a lighter shade of white. He needs the ratio of blue to white paint to be 3:2 to get the desired color. If he uses 15 drops of blue paint, how many drops of white paint does he need to use Explain the author's point of view on the Lowell Mills.AP US HISTORYDocument Analysis of autobiography by Harriett Hansen Robinson. 100 POINTS PLEASE HELPWhat are the coordinates of the image of the point (2, 6) after a clockwise rotation of 90 about the origin?(6, 2)(6, 2)(2, 6) Isaac is on the 4th floor of a building. If he rides an elevator up 7 floors, what floor will he be on?A. What integer represents the floor Isaac is starting on? ________B. What integer represents how many floors the elevator will rise? ________C. What floor will the elevator stop at? ________ What roles did you see women playing during the war in the movie WarHorse? Which sentence demonstrates the authors view about the importance of the Biltmore house today? HELPPPP Does scout believe that laws or the hearts and minds of citizens play a greater role in creating a just society? What do you think? Janice buys four boxes of paper clips . She pays with a $ 10 bill and receives $ 6.08 in change . What is the price of one box of paper clips ? What is the pH of a buffer made by combining 10.0mL of 0.51 M CH3NH2 with 10.0 mL of 0.61 M CH3NH3Cl? Kb CH3NH2 = 4.4 x 10-4 Why was the Constitutional Convention of 1787 called for? COMO OLVIDARME DEL FUTBOL 1.If P ={ a, b, c, d, e,f g} Q = { a, c, d, f} and R = { d, e ,f, g, h, i,j} Then ( P Q) =2.T ={p,q,r,s,t} . The number of subsets of T is? Why do most rivers in Africa flow toward the Ocean? please help.explain the difference between internal an external influence and give an example each. Solve 4 x + 7) = 24. what came first chicken or egg i need a explanation did anyone do the healing power of sad songs achieve? HELPPO Plsssss helpppp me put these in order