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
barxatty [35]
3 years ago
6

Chemical change example

Chemistry
1 answer:
lord [1]3 years ago
3 0

Answer: burning paper

Explanation:

The paper burns in air to form smoke and ash. which makes it a chemical change.

You might be interested in
In process in which An animal's cells use oxygen and digested food molecules to release the energy in food is called
mamaluj [8]
In process in which An animal's cells use oxygen and digested food molecules to release the energy in food is called

cellular respiration
5 0
3 years ago
Read 2 more answers
How many protons does the neutral atom pictured have?<br> A) 8<br> B) 18<br> C) 2<br> D) 20
Shalnov [3]

Answer:

b 18

Explanation:

3 0
3 years ago
Read 2 more answers
Liquid water boiling in an open pan on a stove is our system. Is the system open or closed? What boundary transfers are happenin
valina [46]

Answer:

It's an open system, tranfering heat through a rigid, diathermal wall and matter through an imaginary and permeable wall, and it is not at steady state.

Explanation:

  • An <em>open system</em> is that that interacts with its surroundings exchanging energy and matter. In an open pan with boiling water you have an open system because steam (matter) is leaving the system, as well as heat (energy) through the pan/stove.
  • A<em> boundary</em> is what separates the system from its surroundings, there are many types of boundaries, based on how they transfer energy they can be diathermal (conducting heat) or adiabatic (insulating), on their rigidity they can be rigid, flexible, imaginary or movable and based on their permeability. For the system described we have an imaginary boundary on top that is also permeable allowing matter to go out or in the system, and another wall (the stove/pan itself that is rigid and impermeable avoiding the loss of matter and diathermal, allowing the conduction of heat.
  • It is said that a system is at a<em> steady state</em> when the variables that define that system remain constant over time. In an open pan, you can't fully control those variables, you'll have matter and energy scaping from it with no way to regulate it.

I hope you find interesting and useful this information! good luck!

3 0
3 years ago
56789x09876<br><br><br><br><br><br><br> Does anyone want to rp?? Any kind of rp I'm just bored
Alja [10]
The answer would be 560,848,164 because the 0 at the start WOULDNT matter
7 0
3 years ago
An organism that has been thriving, has died. Which of the following is NOT a cause of its demise? Question 6 options: appropria
pashok25 [27]

I would say soil would be your best option. This is because out of all these, soil collects a lot of different substances and could have easily absorbed something that then killed the organism.

6 0
3 years ago
Other questions:
  • Which of these is the balanced equation for this reaction?
    8·1 answer
  • In a sedimentary rock, small rounded particles indicate a A) long distance and long travel time. B) long distance and short trav
    11·1 answer
  • Every substance melts at 0 degrees Celsius and boils at 100 degrees Celsius.
    13·2 answers
  • Animals return water to the air through:
    8·2 answers
  • Please help me!! I really need help! If you can help explain the work I would really appreciate it! Thank you have a wonderful d
    13·1 answer
  • Why is reactivity not a physical property
    10·1 answer
  • How many valence electrons are in oxygen?
    6·1 answer
  • 1) Recall the two written definitions of an oxidation-reduction reaction provided in our lessons. Which of these definitions is
    13·1 answer
  • 6. Add the following numbers together and show your answer in grams:
    11·1 answer
  • Which type of rock does B represent?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!