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
ludmilkaskok [199]
3 years ago
5

What must happen before a chemical reaction can begin?

Biology
2 answers:
kykrilka [37]3 years ago
6 0
A energy barrier must be overcome.
bixtya [17]3 years ago
6 0

Answer:

Before a chemical reaction happens, what should happen is:

  • reagent contact,
  • chemical affinity,
  • favorable collisions, and
  • activation energy.

Explanation:

  • Contact between reagents: In order for the reactant molecules to collide with each other, they must come into contact. For example, sodium is a metal element that reacts with oxygen, oxidizing in minutes when in contact with air.
  • chemical Affinity: This property refers to the ability of one substance to react with another, because even if two or more substances are brought into contact but there is no affinity between them, the reaction will not occur
  • favorable collisions: For a chemical reaction to occur, the molecules of the reagents that came in contact must effectively collide. The greater the number of favorable collisions, the faster the chemical reaction will be.
  • Activation Energy: For collisions to be favorable and result in a chemical reaction, the reagents must have a minimum energy, which is the activation energy.  Activation energy is required for the formation of the activated complex, that is, an intermediate structure between reactants and products, where reactant bonds are being weakened and product bonds are being formed.
You might be interested in
Which scenario does the picture below best represent?
Hitman42 [59]
The second choice I think would be right because the picture is of a vaccine
4 0
3 years ago
Read 2 more answers
Are all explanations scientific?
melomori [17]
If your asking if you can prove everything by science then no but people will try they will give out theories and try to find solutions that they can't. And if your asking if your able to prove all things that happen/the explanations scientifically then the answer is no. Take how the world was made for example nobody knows how it is made. The scientists are trying to prove it was created by some big bang when in reality nobody really knows that's just a theory. One of many theories.
3 0
4 years ago
In natural selection the selective agent is the
vichka [17]
They would then pass on the favourable characteristics to their offspring. The Selective Agent is the environmental factor acting on the population. The Selection Pressure is the effect of Natural Selection acting on the population.
5 0
3 years ago
Which statement describes the role of the caterpillar in this food chain?
Bingel [31]

Answer:

c.it is a herbivore because it eats the flower for energy

Explanation:

4 0
3 years ago
Read 2 more answers
When carbon dioxide is not exchanged, the net result is high carbon dioxide, a condition called ________, within the body?
Yuri [45]

Answer;

-Hypercapnia

Explanation;

-Hypercapnia is a condition of abnormally elevated carbon dioxide (CO2) levels in the blood. Carbon dioxide is a gaseous product of the body's metabolism and is normally expelled through the lungs.

The condition usually happens as a result of hypoventilation, or not being able to breathe properly and get oxygen into the lungs.

3 0
4 years ago
Other questions:
  • The apical portion of intestinal cells is conjugated via this cellular structure. __________
    12·1 answer
  • A new gene is discovered that dramatically aids in the digestion of fish. you hypothesize that populations with a history of bei
    9·1 answer
  • Why are forests a renewable resource
    11·1 answer
  • Which element of the scientific process can not be changed
    8·1 answer
  • A disease involving a virus that attacks the nervous system and often results in paralysis is:
    11·2 answers
  • Why is a cell important?
    7·2 answers
  • A sedentary organism is one that can swim great distances in aquatic environments
    6·2 answers
  • What conclusion can be drawn from the diagram to support the theory of evolution?
    10·1 answer
  • Please help!!! Describe what a zygote is
    10·1 answer
  • Urbanization can result in negative impacts on the environment. How can transportation methods be improved to reduce the impact
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!