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
olya-2409 [2.1K]
3 years ago
7

Which of the following are indicators of a chemical change?

Chemistry
2 answers:
artcher [175]3 years ago
7 0
Hey there!
Chemical changes are changes in object's chemical compounds and chemical compositions, and often can't be reversed.
Here's an example:
If you have a piece of paper and you happen to burn it, that can't be reversed.
In other words, it can't be "un-burned". Nothing can restore it to its previous state.
Hopefully this helped!
kondaur [170]3 years ago
5 0
Change in color, temperature, or odor 
You might be interested in
Physical Science pre-Test 2020-2021
poizon [28]

Answer:

exothermic I think

Explanation:

IM TWKIGN THE TEST

4 0
2 years ago
5-8 complete sentences paragraph, explaining why you would want to make a change to help our ecosystems. (including a change you
alisha [4.7K]

Answer:

Explanation:Although the term is quite new, our connection to nature is not. We depend on nature for our survival - without healthy ecosystems, our drinking water isn’t clean nor is the air we breathe. We also enjoy nature... studies show that people who spend time in nature tend to be happier than those that don’t. It can even act as a natural anti-depressant. With industry and urban sprawl expanding at unprecedented rates, Ecosystem Services attempt to translate the benefits we receive from nature into economic terms so we can better understand the trade-offs we are making between nature and industrial development.

7 0
2 years ago
Read 2 more answers
The fifth element in group 7 in astatine would you expect it to be gas, liquid, or solid? why?
Ymorist [56]

Answer:

solid

Explanation:

Melting and boiling points of Group 7 elements State at room temperature Room temperature is usually taken as being 25°C. At this temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine and astatine are solids. There is therefore a trend in state from gas to liquid to solid as you go down the group.

6 0
1 year ago
Please describe what’s happening in this reaction!! for brainlest answer
yan [13]

Answer:

The correct answer is - nuclear fission.

Explanation:

In the given diagram, the reaction is a graphical representation of the nuclear fission of one nucleus of Uranium 235 into two nuclei of Kr with three neutrons that leads to a chain reaction and releases a huge amount of energy and grow out of control.

With every fission, there are two neutrons emitted which results in splitting more nucleus into two nuclei and keep on growing and never die out. The amount of energy also keeps on growing with an increase in the reactions and fission. This reaction is used to generate electricity and nuclear weapons.

8 0
2 years ago
Nancy rides her bike with a constant speed of 12 km/h. How far can she travel in 3 hours 20 minutes?
LekaFEV [45]

she will travel 40 km in 3 hours and 20 minutes

5 0
3 years ago
Other questions:
  • "The occurrence of the all-or-none ________________ results from depolarization in response to rapid entry of ____________ ions
    8·2 answers
  • Which phase of matter has a fixed volume but variable shape?
    7·2 answers
  • A pendulum starts out at its highest point with 10 Joules of Potential Energy. When it reaches the lowest point of its swing, ho
    8·1 answer
  • Explain the large difference in boiling points between CH4 and CBr4
    9·1 answer
  • Avoltic cell prepared using aluminium and nickle has the flowing cell notation ​
    6·1 answer
  • 6. When does vaporization take place?​
    14·1 answer
  • HELP HELP PLS !! <br> 5N<br> 21N
    6·1 answer
  • Of the following two gases,
    7·1 answer
  • 4. Why does the metallic character of the alkaline earth metals increase as you go down the
    14·1 answer
  • An important and convenient aspect of the metric system is that volume is derived from the basic length measurement. which pair
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!