reaction
123
3.0
- noun
- /riˈækʃən/
- Specialized
:
reacción química
- You can see that the reaction proceeds in bursts.
- chemical reaction
- chain reaction
- reaction rate
As heat allows things to degrade faster, reactions increase.
- As heat allows things to degrade faster, reactions increase.
Examples
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Eventually, the temperature becomes high enough that chemical reactions change the makeup of the gas.
Academic text (2011) -
And if the process isn't controlled, the reaction gets very hot very quickly.
-
Increase the rate of reaction.
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To produce a sustainable nuclear chain reaction, there must be more material than the minimum mass.
Academic text (1999) -
These rods actually control the nuclear reaction.
-
Eating and digestion constitute a complex mixing and reaction problem that has not been widely studied by engineers.
Academic text (2011) -
A few minutes later, a chemical reaction called lactic acidosis... caused his lungs to begin bleeding.
-
With the chemical reaction, this liquid metal becomes an engineering mechanism forcing the two electromagnetic pyramids together, causing an anti-gravity shock wave.
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Earlier naturalists noticing other species' leaf movements described them as passive reactions to environmental stimuli, particularly the sun.
Academic text (2017) -
The catalyst sped up the reaction between the hydrogen and oxygen gases, forming water.
Synonyms
24
3.1
A change where substances turn into different substances
4
3.5
A process that changes the tiny particles that make a substance
1
3.7
A process that turns one substance into a different one by changing its atoms or molecules
A process in which substances change into new substances, for example rusting or cooking
Idioms
Compounds
36
3.0
The body has a strong unwanted response to things like pollen or peanuts and causes swelling, sneezing and difficulty breathing
- Specialized
16
4.5
A process in which one nuclear event makes more nuclear events happen, keeping the reaction going
- Specialized
4
4.4
A change inside an atom's core that makes or uses a large amount of energy
- Specialized
1
4.1
A series of chemical or nuclear reactions in which one reaction makes the next start
- Specialized
1
3.2
The body's defence that attacks foreign things like germs or transplanted organs
- Specialized
1
4.5
An automatic body response to something that affects it, like sweating or a faster heartbeat
- Specialized
1
7.7
A very hot reaction where parts of atoms join and make huge energy in stars or bombs
- Archaic
1
9.3
Bodily problems like paralysis or blindness that come from emotional stress and have no physical cause
- Specialized
1
6.0
A reaction where a more reactive element replaces a less reactive one in a compound
- Archaic
1
6.6
A strong feeling of worry that lasts a long time with physical signs like tension and shaking
- Specialized
1
4.1
Every push or pull makes an equal force in the opposite direction
- Specialized
1
9.3
A way a person acts without knowing to hide feelings by doing the opposite
1
6.9
A harmful response of the body after receiving the wrong blood from another person
- Specialized
A chemical reaction where one compound breaks into two or more different substances
- Specialized
A learned response that happens when a certain sound or signal appears, for example a dog drooling at a bell
- Specialized
A learned response that happens when a signal like a bell is paired with food many times
- Specialized
A reaction where one compound breaks into two or more simpler substances
- Specialized
A mental process done without thinking that reduces worry about uncomfortable feelings
- Specialized
A chemical change where two compounds exchange parts to make two new compounds
- Specialized
A chemical reaction in which one molecule breaks into two smaller molecules by losing atoms or small groups
- Specialized
A reaction in the centre of an atom that takes in energy from around it
- Specialized
A chemical change in a living thing that proteins make happen faster
- Specialized
A quick increase in antibodies your body makes after it sees the same germ again
- Specialized
A chemical reaction where two small organic molecules join to make a larger molecule called an aldol
- Specialized
An extreme response by the immune system to something you are allergic to that can be life threatening
- Specialized
A process where two atoms combine to make a heavier atom and give off energy
- Specialized
A lab test that shows a germ's outer layer swelling when antibodies are added
- Specialized
A machine like a jet or rocket that pushes a vehicle by throwing fast gas out the back
- Specialized
A machine that pushes a rocket or other spacecraft forward by shooting out fast gases
- Specialized
A way to move that rockets use by pushing out fast gas so the vehicle moves the other way
- Specialized
A machine with blades that makes power by using a fall in pressure along the blades with water or steam
- Specialized
A quick change in your body and feelings when something suddenly surprises you, like a loud noise
- Specialized
A delayed reaction caused by the body's immune cells that appears hours after contact with something you are sensitive to
- Specialized
A very fast body reaction to something you are sensitive to, causing hives, itching, or very bad swelling
How Fast
Surface Forms
Morphology
Etymology
Reaction comes from the parts re- ('back' or 'again') and act ('to do'). In chemistry a reaction is what substances 'do' to each other and the new things they make, which is why the word describes a chemical change.