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
zhuklara [117]
3 years ago
12

Milk Souring a Chemical Change b Physical Change

Chemistry
1 answer:
pav-90 [236]3 years ago
5 0

Answer:

Chemical Change

Explanation:

It is a chemical change because milk is a substance and if it changes its molecular structure ,so it is a chemical change.

You might be interested in
A sample contains 16. 75 g of the radioisotope U-236 and 50. 25 g of its daughter isotope, Th-232. How long did it take for deca
garri49 [273]

The time taken for the isotope to decay is 46 million years.

We'll begin by calculating the number of half-lives that has elapsed. This can be obtained as follow:

  • Original amount (N₀) = 50.25 g
  • Amount remaining (N) = 16.75
  • Number of half-lives (n) =?

2ⁿ = N₀ / N

2ⁿ = N₀ / N

2ⁿ = 50.25 / 16.75

2ⁿ = 3

Take the log of both side

Log 2ⁿ = 3

nLog 2 = Log 3

Divide both side by log 2

n = Log 3 / Log 2

n = 2

Finally, we shall determine the time.

  • Half-life (t½) = 23 million years
  • Number of half-lives (n) = 2
  • Time (t) =?

t = n × t½

t = 2  × 23

t = 46 million years

Learn more about half-life: brainly.com/question/25927447

8 0
3 years ago
Read 2 more answers
How are genetic engineering and artificial selection similar?
adelina 88 [10]

Answer:

both genetic engineering and artificial selection allow humans to change a species so that its member are better suited for human needs. artificial selection selects for traits already present in a species, whereas genetic engineering creates new traits.

Explanation:

7 0
2 years ago
Activation energy is ____. (1 point)
Usimov [2.4K]
Activation energy is defined as the least amount of energy that is needed to be available in a chemical system with potential reactants in order to result a chemical reaction. Therefore, the correct answer would be the first option: the heat released in a reaction. 
7 0
3 years ago
Read 2 more answers
A chemistry student’s height is measured at 68.5 inches. How tall is the student in cm?
pantera1 [17]
173.99cm multiply 68.5 x 2.54 always use that number when converting inches to cm
4 0
3 years ago
A graduated cylinder contains 17.5 ml of water. When a metal cube is placed onto the cylinder, it’s water level rises to 20.3 ml
MrRa [10]

Answer:

20.3-17.5=2.8ml  1ml=1cm3   vol= 2.8cm3

Explanation:

4 0
3 years ago
Other questions:
  • Of the objects below, ________ is the most dense. Of the objects below, ________ is the most dense.
    12·1 answer
  • An electron in the n=6 level of the hydrogen atom relaxes to a lower energy level, emitting light of ?=93.8nm. find the principa
    7·2 answers
  • What are reactants of nuclear fission
    12·1 answer
  • Calculate the EMF between copper and silver Ag+e-E=0.89v<br>Cu=E=0.34v​
    5·1 answer
  • In the circuit diagram what does the line segment with two circles at the ends represent?
    14·1 answer
  • If a buffer contains 1.05M B and 0.750M BH+ has the pH of 9.5. What would be the pH after 0.005mol of HCL is added to 0.5L of so
    8·1 answer
  • When did jellyfish, bacteria and sponges thrive?
    10·1 answer
  • The bond angles increase steadily in the series PF3, PCl3, PBr3, and PI3. Using the concepts that you have learned in chapters 7
    11·1 answer
  • Which of the following properties can be used as evidence a chemical reaction has occurred? (Select all that apply)
    6·2 answers
  • Which of the following phrases best describes an atom? Choose the two correct answers.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!