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
VikaD [51]
3 years ago
6

Which of the following is a chemical change?

Physics
1 answer:
klemol [59]3 years ago
3 0

a). Water is still H₂O after it freezes.

b). Ice is still H₂O after it melts.

c). Wire is still Cu when it's bent.

d). Paper combines with the O₂ in the air, and turns into
     a lot of new compounds when it burns.

You might be interested in
The diagram below shows a model of the Earth's orbit around the Sun.
Sladkaya [172]
I would say that I and IV because summer is I and fall is IV
7 0
3 years ago
Read 2 more answers
Producers,____________, and_______________ help to move matter and energy through ecosystems.
Phoenix [80]
Producers, consumers, and decomposers help to move matter and energy through ecosystems.

Hope this helps! :)
3 0
3 years ago
if a spring has a spring constant of 2 N/m and it is stretched 5 cm, what is the force of the spring?
djyliett [7]

Answer:

0.1 N

Explanation:

Considering the relationship between force,

spring constant and extension as defined by Hook's law

The force F=xk as from Hooke's law where F is the force of the spring, k is spring constant and x is extension or compression. Substituting 2 N/m for k and 5cm which is equivalent to 0.05 m for extention x then the force will be

F=2*0.05=0.1 N

4 0
3 years ago
An object to charge 2.00 c is a pretty from a second object with the same charge by a distance of 1.50 m what is the electric fo
Orlov [11]
F = q₁q₂C / r²

F force
q charge
C Coulomb constant
r separation between charges
5 0
3 years ago
Systems distribute heat energy by the circulation of air.
Ulleksa [173]
That seems like a statement more than a question. Where's the question?
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which axis is the horizontal axis in a graph?*
    11·2 answers
  • A student is pouring equal amounts of water, maple syrup, and cooking oil into a glass beaker and looking at how the layers sett
    15·1 answer
  • 100 points!!! Please help!!!
    12·1 answer
  • What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of​
    11·1 answer
  • Which of the following is a negatively charged particle that is found in "clouds" around the nucleus?
    9·1 answer
  • 24 POINTS
    13·1 answer
  • Express the volume expansivity and the isothermal compressibility as functions of density rho and its partial derivatives. For w
    6·1 answer
  • Which best describes Earth's magnetic pole?
    10·2 answers
  • Subtract the following and give the answer using significant figures 3.400-0.7591
    11·1 answer
  • Two strings are adjusted to vibrate at exactly 202 Hz. Then the tension in one string isincreased slightly. Afterward, three bea
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!