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
Georgia [21]
3 years ago
7

PLEASEEEEEEEEEEE HELP WILL MARK BRAINLIEST!!!!!!!!!!!

Chemistry
2 answers:
slamgirl [31]3 years ago
7 0

Answer:

The correct statement is that Example A describes a chemical change and Example B describes a physical change.

Explanation:

  1. In example A we have a chemical change because the use of soaps and detergents implies a chemical reaction called saponification due to the soap molecules has a double component the first part of a soap is called hydrophilic and the second part is called hydrophobic. so, when the soap molecules interact with the oil molecules in water the hydrophilic part will be bonded with water and the hydrophobic part will be bonded with the oil. This new bondings are called micelles and the formations of micelles by new bonds it is a chemical change.
  2. In example B there is a physical change because the water in a Bowl is evaporated. it means that at higher temperatures the molecules of water pass from the liquid state of the matter to the gas state. This physical change happens after the water molecules reach enough energy able to broke surface tension in liquid water. This energy is obtained thanks to the increasing of temperature, and the temperature needed to achieve this change from liquid to gas is called boiling point.

Sidana [21]3 years ago
3 0
Example A describes a chemical change and Example B describes a physical change.
You might be interested in
A friend tells you he read on a web site that earth is getting smaller, What can you tell him that shows Earth's size is not cha
Lyrx [107]
U can show him that Earth isn't getting smaller, because things WOULD be getting smaller, and our houses would be getting smaller, IF everything shrunk WITH Earth.
3 0
3 years ago
Which of the following would happen if Earth's moon were half the size that it is now? O The oceans' tidal variations would be s
Brilliant_brown [7]

Answer: A. The oceans‘ tidal would be smaller because the moon would exert less gravitational pull on earths oceans.

Explanation:

i got it right :)

3 0
3 years ago
What does the term hospitality mean to you? Give a definition for hospitality.​
antiseptic1488 [7]

Answer:

relating to or denoting the business of entertaining clients, conference delegates, or other official visitors.

3 0
3 years ago
Read 2 more answers
We can also use the equation for enthalpy change for physical phase changes. Consider the phase change H2O(l) → H2O(g). Calculat
BlackZzzverrR [31]
<span>44.0 kJ is the answer</span>
4 0
3 years ago
Read 2 more answers
What is the relationship between the number of each atom used to form compound and oxidation number?
deff fn [24]

Answer:Explanation:

In compounds, all other atoms are assigned an oxidation number so that the sum of the oxidation numbers on all the atoms in the species equals the charge on the species.

6 0
3 years ago
Other questions:
  • Which metal reacts quickly with cold water only when it is finely powdered?
    6·2 answers
  • Measure the level of lead in blood
    11·1 answer
  • The term “3 FeCI 2” in a balanced equation says
    13·1 answer
  • Of the following, only ________ has sp2 hybridization of the central atom. Of the following, only ________ has sp2 hybridization
    8·1 answer
  • true or false You have to have the same number of each type of atom on the left-and right-handside of a chemical equation
    8·1 answer
  • Define<br>Equivalent weight of a<br>Chemical substance​
    9·1 answer
  • I need help please i need it today
    13·1 answer
  • What is it about water that makes it able to dissolve both polar covalent and iconic substances
    12·1 answer
  • What volume of a 0.35M solution of sodium chloride could be formed with 25 grams of NaCl?
    12·1 answer
  • The pressure needed to pump blood back to the heart is produced by the _____.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!