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
ozzi
3 years ago
10

What is a physical change that could not easily be reversed?

Chemistry
1 answer:
mylen [45]3 years ago
8 0

Answer:

the answer is number 1

Explanation:

because when you make toast you burn it you toast it and there is no way to undo that.

You might be interested in
Give examples to three solutions you commonly use and identify the solvent and solutes that make it each up.
8_murik_8 [283]
Mouthwash:
solvent - water
solute - alcohols

vinegar:
solvent - water
solute - acetic acid

bleach:
solvent - water
solute - sodium hypochlorite

hope this helps!!

8 0
3 years ago
Read 2 more answers
Do all isotopes decay over time ?
ser-zykov [4K]
Certain naturally occurring radioactive isotopes are unstable: Their nucleus breaks apart, undergoing nuclear decay. ... All elements with 84 or more protons are unstable; they eventually undergo decay. Other isotopes with fewer protons in their nucleus are also radioactive.
4 0
3 years ago
Read 2 more answers
What is the identity of a sample that has a mass of 25.0 g and a volume of 2.38 cm3?
Snezhnost [94]
One of the defining features of an element is it's density. Calculate that and verify which substance this would be. 

p=m/v 
p=25g/2.38 cm^3 
p=10.50 g/cm^3 

Density of Silver is 10.5 g/cm^3 

Hope I helped :) 
7 0
4 years ago
Read 2 more answers
How does biodiversity generate the economy?
Lesechka [4]
Biodiversity helps an economy grow and develop over time because such as the circle of life we need other things in order to evolve such as trees so we can be able to breathe and plants so the herbivores can eat so we can eat them because we are all part of a cycle and in order to keep the cycle going we need biodiversity to keep the food chain going and our economy well and lifted
7 0
3 years ago
What is bias in an experiment?
eimsori [14]

a process where the scientists performing the research influence the results, in order to show a certain result

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the product of the second alpha decay in this series
    15·1 answer
  • A student increases the temperature of a 200 cm3 balloon from 33degrees C to 47 degrease C. What will the new volume of the ball
    11·1 answer
  • A sample of 5.30 mLmL of diethylether (C2H5OC2H5;density=0.7134g/mL)(C2H5OC2H5;density=0.7134g/mL) is introduced into a 6.50 L L
    9·1 answer
  • C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l), ΔH = –1.37 × 103 kJ For the combustion of ethyl alcohol as described in the above equati
    9·1 answer
  • The equilibrium constant at 35 0 K for the reaction Br2(g) I2(g) 2IBr(g) has a value of 322. Bromine at an initial pressure of 0
    7·1 answer
  • What is the term called ¨I nutted
    6·1 answer
  • What happens when liquid changes to gas?
    15·1 answer
  • Reaction type <br> __HCl + __Mg -&gt; __MgCl2 + __H2
    7·1 answer
  • What is produced when a strong base reacts with the bicarbonate buffer system in the human body?
    15·2 answers
  • S+3O2→SO3<br> is this equation balanced why or why not<br> PLease help will mark as brainlyest
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!