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
lorasvet [3.4K]
4 years ago
13

Which of the following involve chemical changes?

Chemistry
1 answer:
natita [175]4 years ago
7 0

1 and 2 are both chemical changes because they can not be reversed while 3 is only changing states and can be reversed by freezing the melted chocolate.

You might be interested in
SpongeBob's mother is so proud of her son and his new wife, SpongeSusie, as they are excepting a little sponge. She knows that t
Afina-wow [57]
The chance of their baby being blue is a 25% chance. There is a 50% chance that their baby will carry the trait but not have the feature. Since SpongeBob is heterozygus he carries the blue trait so his kid has a 50% chance of being blue from his genes. SpongeSusie is blue so she has a 100% of her child being blue.
4 0
4 years ago
How do biotic factors impact ecological organization?
love history [14]

Answer:

plz mark as BRAINLIEST plz

Explanation:

The biotic factors in an ecosystem are the living organisms, such as animals. Biotic factors in an ecosystem are the participants in the food web, and they rely on each other for survival. ... These living organisms affect each other and influence the health of the ecosystem.

3 0
4 years ago
Which of the following elements with exhibit the greatest shielding effect
Dafna11 [192]

Rubidium would exhibit the greatest shielding [ effect. ]

8 0
3 years ago
Describe a mechanical property of steel that characterizes its resistance to permanent deformation
strojnjashka [21]

The mechanical property of steel that characterizes its resistance to permanent deformation is ductility.

Am alloy is a substance prepared by adding one or more elements to a base or parent metal to obtain desirable properties.

Steel is an alloy of Iron and carbon in the composition of 99.8% and 0.2% respectively.

The mechanical or physical properties of steel include:

  • It is more malleable and ductile than iron.
  • It is harder and stronger.
  • it can withstand great stress and strain.

The ductility of a metal like steel is the ability of a metal to change its shape without breaking, that is, resistance to permanent deformation.

Therefore, the mechanical property of steel that characterizes its resistance to permanent deformation is ductility.

Learn more here:

brainly.com/question/21706983

8 0
3 years ago
29) The antimony in a sample of alloy weighing 0.250 g is converted to Sb2O5 and this substance is ignited to Sb2O4. If the Sb2O
emmainna [20.7K]

Answer:

I think it just h sur rn of sb

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which is an example of an organism? soil,  iceberg , mold  or  molehill
    10·2 answers
  • You know that an unlabeled water bottle contains at least some water. You measure the freezing point of the unknown substance an
    13·1 answer
  • Calculate the number of CO2 molecules in 1.5 moles
    7·1 answer
  • For the reaction
    12·1 answer
  • For the following reaction, 3.76 grams of iron are mixed with excess oxygen gas . The reaction yields 4.29 grams of iron(II) oxi
    8·1 answer
  • What is Le Chatelier Principle ? Explain
    10·1 answer
  • Someone please help will mark as brainliest
    11·1 answer
  • C3H8, + 5O2
    9·1 answer
  • The average temperature at the South Pole In January is - 35.4 °C.
    14·1 answer
  • What is the percent nitrogen in NaNO3?<br> 56.47%<br> 27.04%<br> 16.48%<br> 14.01%
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!