What is it when a cup of ice turns to water
Answers
Ice turning into water is a physical change. The ice is undergoing the process of melting which does not change it chemically (ice and water are chemically identical in the sense that they are both composed of H₂O molecules) and the only difference between water and ice is that water molecules have a higher average amount of energy than the ice molecules do. When a substance melts, the molecules within the substance gain energy (in the form of heat) which allows them to break the intermolecular forces keeping them together. Since the melting of ice requires energy, the process is endothermic which means that the ice had to get energy from its surroundings and that water has more energy than ice does as a result of the process (ΔH is positive).
I hope that helps. Let me know in the comments if anything is unclear or if I did not answer your question.
Answer:
The freezing point is the temperature at which a liquid turns to a solid. ... This temperature is referred to as the melting point when temperatures rise above 32°F (0°C), causing ice to melt and change state from a solid to a liquid (water), as happened with the cup of crushed ice at room temperature.
Explanation:
The freezing point is the temperature at which a liquid turns to a solid. ... This temperature is referred to as the melting point when temperatures rise above 32°F (0°C), causing ice to melt and change state from a solid to a liquid (water), as happened with the cup of crushed ice at room temperature.
Related Questions
Why does the evaporation of sweat cool your body on a warm day
There is a toxic poison gas in the air made of chlorine, argon, and rheniumWho made the poison gasA. ClarreB.NathanC. Felex
Describe the different stages of the rock
Please answer number 76,77 and 78.
Answers
Answer:
the acceleration i think is 10
Explanation:
5x10=50
A.5.3
B.4.7
C.8.7
D.9.3
Answers
The correct answer is C) 8.7
What does pH answer mean?
The pH of a solution indicates the acidity or basicity of the answer. A solution is said to be neutral if the pH is 7, if the pH fee is less than 7 then it is acidic in nature and if the pH cost is greater than 7 then the solution is simple in nature.
What does pH stand for?
Ph may appear as it belongs at the periodic desk of factors, however, it's truly a unit of size. The abbreviation pH stands for ability hydrogen, and it tells us how an awful lot hydrogen is in drinks—and the way active the hydrogen ion is.
What's the pH of a solution?
PH is a measure of the attention of H+(aq) ions in an answer. The attention of H+ ions may be stated in mol dm(-three), but the use of the log(10) feature simplifies the numbers concerned. Definition: pH is the terrible logarithm to base 10 of the hydrogen ion awareness in an aqueous solution.
Learn more about the solution here: brainly.com/question/251701
#SPJ2
Electrical Energy ____________________ Heat Energy
Light Energy
Mechanical Energy
Nuclear Energy
Chemical Energy
Answers
Answer: Mechanical Energy
Explanation:
According of law of conservation of energy, energy can neither be created nor be destroyed. It can only transformed from one form to another.
When electric sharpener works by using electrical energy, it is being used to drive the blades of the sharpener and is being converted to mechanical energy which is then converted to heat energy and the sharpener gets warm.
Electrical energy is the energy possessed by virtue of motion of electrons.
Mechanical energy is the energy possessed by a body by virtue of its position and motion.
Heat energy is the transfer of thermal energy from hotter body to colder body.
first the pencil sharpener gets electricity from the plug and wires
that then makes the pencil sharpener move it's motor and well, sharpen pencils
all the kinetic energy from the motor moving releases heat, making the sharpener warm
Answers
1L = 4.2 cups
4 L = [?] cups
Answers
Answer:
16.8 cups
Explanation:
We are given that there are 4.2 cups in in 1 liter of a liquid and we are to find out the number of cups that there will be in 4 liters.
To find this out, we will use the ratio method.
We know that:
1 L = 4.2 cups
So we can write it as:
Therefore, there are 16.8 cups in 4 liters.
16.8 cups are in 4 liters. A conversion factor is a ratio that allows you to convert a quantity expressed in one unit to an equivalent quantity expressed in another unit.
It is used in various fields, such as physics, chemistry, engineering, and everyday measurements. Conversion factors are derived from the relationships between different units of measurement.
1 liter is equivalent to 4.2 cups. This conversion factor tells that for every 1 liter, we have 4.2 cups.
To find out how many cups are in 4 liters, multiply 4 liters by the conversion factor of 4.2 cups per liter:
4 liters x 4.2 cups/liter = 16.8 cups
So, 4 liters would have 16.8 cups. This means that if 4 liters of liquid are into cups, need 16.8 cups to hold it all.
To learn more about the conversion factor, follow the link:
#SPJ6
Answers
Removing the tree would decrease the water consumption but would also decrease the oxygen production.
What is a tropical rainforest?
Tropical rainforests are found in Central and South America, western and central Africa, western India, Southeast Asia, the island of New Guinea, and Australia.
Sunlight strikes the tropics almost straight on, producing intense solar energy that keeps temperatures high, between 21° and 30°C (70° and 85°F).
Deforestation has an adverse affect on air by reducing the amount of oxygen and increasing the amount of carbon dioxide as well as contributing to global warming.
Photosynthesis would produce food for the tree and as by - product, oxygen is produced.
Removing the tree would decrease the water consumption but would also decrease the oxygen production.
Learn more about tropical rainforest here:
#SPJ5