1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Oxana [17]
3 years ago
11

Which phrase change is an endothermic change? (1 point)

Chemistry
1 answer:
Vadim26 [7]3 years ago
5 0
An Endothermic change is a process in which there is absorption of energy.
-Condensation is the transformation from a gas to a liquid. So the water molecules releases energy while condensing, so condensation is exothermic (opposite of endothermic, it's the release of energy)
-Vaporization is the transformation from a liquid to a gas. When you heat water to evaporate it, you're giving energy to the water molecules. And when they absorb this energy, they transform to a gas. Which means that Vaporization is endothermic.
-Deposition is the transformation from gas directly to solid without passing by the liquid phase. Same as the condensation, but the water molecules release even more energy to directly become Solid. So deposition is exothermic.
-Freezing is the transformation from a liquid to a solid. During this phase, water molecules releases energy to its surrounding. So freezing is exothermic.

We can conclude that Vaporization is endothermic, because it's absorbing energy to transform from liquid to gas, while condensation, deposition and freezing are exothermic because they release energy to transform.

Hope this Helps! :)
You might be interested in
What is volume? What instrument is used to measure liquid volume? What formula is used to calculate the volume of a solid object
sertanlavr [38]

Answer:

Volume is the amount of space that a substance occupies. A graduated cylinder is used to measure liquid volume. The formula used to calculate the volume of a solid object is = L x W x H

Explanation:

8 0
3 years ago
Can liquid CO2 exist on Earth? Why or Why not ?
Zanzabum

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

6 0
3 years ago
a student determined that 8.2 milligrams of oxygen is dissolved in a 1000 gram sample of water at 15 degrees Celsius and 1 atm w
melamori03 [73]

Answer: We do not know. We have not been given the solubility of oxygen in water at a given temperature nor have we been given the Henry's laws constant. We also do not know whether you mean 1 atmosphere of air, or 1 atmosphere of oxygen.

8 0
3 years ago
Phosphorus has three electrons in its 3p sublevel and sulfur has four. Phosphorus should have the lower ionization energy but it
Nadya [2.5K]

Answer:

B

Explanation:

First of all it is important to know that a half filled orbital is particularly stable. In phosphorus all the electrons occur singly in the 3p sublevel minimizing inter electronic repulsion hence it is more difficult to remove an electron from this energetically stable arrangement. In sulphur, electrons are paired in one of the 3p orbitals thereby lowering the energy of that level due to instability caused by interelectronic repulsion between two electrons in the same orbital.

8 0
3 years ago
Help plz i need it my mom is mad at me for not knowing this
ohaa [14]
Lol ok ill help the answer is true and she SHOULDNT be mad at you
5 0
3 years ago
Other questions:
  • Chem homework, help?
    9·1 answer
  • How many hydrogen atoms are needed to form five water molecules
    11·2 answers
  • Which bonds are found inside a water molecule, between hydrogen and oxygen?
    13·1 answer
  • Which of the following is a characteristic of mixtures? A. Mixtures can only be in solid and liquid form. B. Substances that are
    15·1 answer
  • Based on solubility, boiling point, and spectroscopic results, a chemist identified an unknown compound as an alcohol. Yet when
    9·1 answer
  • The data listed below are for mechanical waves. which wave has the greatest energy? amplitude = 7 cm; wavelength = 12 cm; period
    9·2 answers
  • What volume of air at 25°C and 1.00 atm can he stored in a 10.0 L high-pressure air tank if compressed to 25°C and 175 atm?
    10·1 answer
  • Which element is a metal that is in the liquid phase at STP?
    6·2 answers
  • What is the third alkali metal ​
    14·2 answers
  • Which characteristic do electronegativity differences indicate about reactions between atoms
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!