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Levart [38]
3 years ago
10

What happens in a chemical reaction?

Physics
1 answer:
Dimas [21]3 years ago
3 0

Answer:

d.  Atoms are rearranged.

Explanation:

In a chemical reaction, what happens is that atoms are simply rearranged when the process takes place.

According to the law of conservation of mass "in a chemical reaction, matter is neither created nor destroyed but atoms are simply rearranged".

Therefore:

  1. Atoms are not created
  2. Atoms are not destroyed
  3. Atoms are simply rearranged.
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If chilled coke and hot tea are <br> kept together tea cools down but ko gets warm why<br>​
olga55 [171]
Tea gets cool beacuse of heat tranfer through convenction
Heat transfers from a area of hot region to cold.
The tea is hot in this case, due to taht factor the heat will move towards teh cooler region which is coke and will make the coke warm


Hope this helped!
5 0
3 years ago
Which reading strategy helps you to read and understand a passage quickly by making use of your previous knowledge?
Molodets [167]
Taking notes,because you can read back on what you learned
4 0
3 years ago
In the graph, which region shows nonuniform positive acceleration?
cricket20 [7]

Answer: A.AB

Explanation:

This Velocity vs Time graph shows the acceleration of a body or object, since acceleration is the variation of velocity in time.

As we can see in the attached image, the graph can be divided in four segments:

OA: In this segment the acceleration is changing at a uniform rate. In addition we can see it has a positive slope, hence we are dealing with a positive uniform acceleration.

AB: In this segment the acceleration is changing at a nonuniform rate, since  in this part it is not possible to calculate the slope. However if this were uniform, the slope woul be positive. This means the <u>acceleration is nonuniform and positive.</u>

BC: In this segment the acceleration is changing at a nonuniform rate, since  in this part it is not possible to calculate the slope. However if this were uniform, the slope woul be negative. This means the acceleration is nonuniform and negative.

CD: In this segment the acceleration is changing at a uniform rate. In addition we can see it has a negative slope, hence we are dealing with a negative uniform acceleration.

From all these segments, the only one that fulfils the nonuniform positive acceleration condition is option A:

Segment AB

3 0
3 years ago
Read 2 more answers
In a given system of units the ratio of the unit of volume to that of area gives the unit of​
ch4aika [34]

Answer:

length

Explanation:

SI unit of volume = m^3

SI unit of area = m^2

volume unit / Area unit = m^3 / m^2

i.e, unit of length

8 0
3 years ago
Pre-Test Active
vlada-n [284]

n is the answer I guess

not so sure

7 0
2 years ago
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