Chemical
noun
A substance made through a process in chemistry.
Water is a chemical made from hydrogen and oxygen.
Often appears as...
- chemical reaction
- chemical substance
adjective
Related to chemicals or the study of chemicals.
She works in a chemical lab.
Often appears as...
- chemical experiment
- chemical analysis
noun
A dangerous or poisonous substance.
There has been a chemical leak at the factory.
Often appears as...
- hazardous chemical
- chemical warfare
Usage tips
Disapproving
noun
A substance made through a process in chemistry.
Water is a chemical made from hydrogen and oxygen.
Often appears as...
- chemical reaction
- chemical substance
adjective
Related to chemicals or the study of chemicals.
She works in a chemical lab.
Often appears as...
- chemical experiment
- chemical analysis
noun
A dangerous or poisonous substance.
There has been a chemical leak at the factory.
Often appears as...
- hazardous chemical
- chemical warfare
Usage tips
Disapproving
Definition 1 of 3
Pro Tip 1/3Natural vs. Man-made
Chemicals can be natural like water or man-made like plastic.
Salt is a natural chemical, while nylon is a man-made chemical.
Pro Tip 2/3Chemistry Building Blocks
Chemicals can be elements or combinations known as compounds.
Sodium is a chemical element; sodium chloride is a chemical compound.
Pro Tip 3/3Everyday Use
Everyday products like soap and medicine contain chemicals.
The label shows the different chemicals used to make this soap.
Pro Tip 1/3Natural vs. Man-made
Chemicals can be natural like water or man-made like plastic.
Salt is a natural chemical, while nylon is a man-made chemical.
Pro Tip 2/3Chemistry Building Blocks
Chemicals can be elements or combinations known as compounds.
Sodium is a chemical element; sodium chloride is a chemical compound.
Pro Tip 3/3Everyday Use
Everyday products like soap and medicine contain chemicals.
The label shows the different chemicals used to make this soap.
Pro Tip 1/3Natural vs. Man-made
Chemicals can be natural like water or man-made like plastic.
Salt is a natural chemical, while nylon is a man-made chemical.
Pro Tip 2/3Chemistry Building Blocks
Chemicals can be elements or combinations known as compounds.
Sodium is a chemical element; sodium chloride is a chemical compound.
Pro Tip 3/3Everyday Use
Everyday products like soap and medicine contain chemicals.
The label shows the different chemicals used to make this soap.
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Video examples
How to control someone...
I need you to stick out your arm for science, roll up your sleeve a bit, So what I'm going to do, I'm putting electrodes on your arm, and you're probably wondering, I just said I'm going to record from your brain, what am I doing with your arm? Well, you have about 80 billion neurons inside your brain right now. They're sending electrical messages back and forth, and chemical messages.
Video examples
Quorum sensing: Bacteria...
we have a fancy name for this we call it quorum sensing they vote with these chemical votes the vote gets counted and then everybody responds to the vote and what's important for today's talk is that we know that there are hundreds of behaviors that bacteria carry out in these collective fashions but the one
Video examples
What is depression? -...
But there are very effective treatments. Medications and therapy complement each other to boost brain chemicals. In extreme cases, electroconvulsive therapy, which is like a controlled seizure in the patient's brain, is also very helpful. Other promising treatments, like transcranial magnetic stimulation,
Video examples
How stress affects your...
as visceral or deep belly fat. This type of fat doesn't just make it harder to button your pants. It is an organ that actively releases hormones and immune system chemicals called cytokines that can increase your risk of developing chronic diseases, such as heart disease and insulin resistance.
Video examples
How sugar affects the...
to deal with the extra sugar you're eating. The major currency of our reward system is dopamine, an important chemical or neurotransmitter. There are many dopamine receptors in the forebrain, but they're not evenly distributed. Certain areas contain dense clusters of receptors,
Video examples
The science of...
possibly even warping your sense of time, and enhancing your memory. This might explain why people never forget their first kiss. The idea of so much of our attraction being influenced by chemicals and evolutionary biology may seem cold and scientific rather than romantic,
Video examples
What would happen if you...
telling our brain we are tired, and signals from the environment telling us it's dark outside. The rise in sleep-inducing chemicals, like adenosine and melatonin, send us into a light doze that grows deeper, making our breathing and heart rate slow down
Video examples
Own the Room PIPE Official...
and he's very hot so full package i had a technology where i could make synthetic chemicals but with the sun this is a world-changing idea this is a competition where people can come from difficult backgrounds and still make it my mom told me you
Video examples
Cell membranes are way...
including proteins, carbohydrates, and cholesterol. Cholesterol keeps the membrane at the right fluidity. It also helps regulate communication between cells. Sometimes, cells talk to each other by releasing and capturing chemicals and proteins.
Video examples
Why Dogs Stick Their...
significance the single chemical aldehyde found in blood makes this one time hunter drool there is a way to bring their smelly world to life shiron photography visualizes the ear currents that carry
Video examples
How to control someone...
I need you to stick out your arm for science, roll up your sleeve a bit, So what I'm going to do, I'm putting electrodes on your arm, and you're probably wondering, I just said I'm going to record from your brain, what am I doing with your arm? Well, you have about 80 billion neurons inside your brain right now. They're sending electrical messages back and forth, and chemical messages.
Video examples
Quorum sensing: Bacteria...
we have a fancy name for this we call it quorum sensing they vote with these chemical votes the vote gets counted and then everybody responds to the vote and what's important for today's talk is that we know that there are hundreds of behaviors that bacteria carry out in these collective fashions but the one
Video examples
What is depression? -...
But there are very effective treatments. Medications and therapy complement each other to boost brain chemicals. In extreme cases, electroconvulsive therapy, which is like a controlled seizure in the patient's brain, is also very helpful. Other promising treatments, like transcranial magnetic stimulation,
Video examples
How stress affects your...
as visceral or deep belly fat. This type of fat doesn't just make it harder to button your pants. It is an organ that actively releases hormones and immune system chemicals called cytokines that can increase your risk of developing chronic diseases, such as heart disease and insulin resistance.
Video examples
How sugar affects the...
to deal with the extra sugar you're eating. The major currency of our reward system is dopamine, an important chemical or neurotransmitter. There are many dopamine receptors in the forebrain, but they're not evenly distributed. Certain areas contain dense clusters of receptors,
Video examples
The science of...
possibly even warping your sense of time, and enhancing your memory. This might explain why people never forget their first kiss. The idea of so much of our attraction being influenced by chemicals and evolutionary biology may seem cold and scientific rather than romantic,
Video examples
What would happen if you...
telling our brain we are tired, and signals from the environment telling us it's dark outside. The rise in sleep-inducing chemicals, like adenosine and melatonin, send us into a light doze that grows deeper, making our breathing and heart rate slow down
Video examples
Own the Room PIPE Official...
and he's very hot so full package i had a technology where i could make synthetic chemicals but with the sun this is a world-changing idea this is a competition where people can come from difficult backgrounds and still make it my mom told me you
Video examples
Cell membranes are way...
including proteins, carbohydrates, and cholesterol. Cholesterol keeps the membrane at the right fluidity. It also helps regulate communication between cells. Sometimes, cells talk to each other by releasing and capturing chemicals and proteins.
Video examples
Why Dogs Stick Their...
significance the single chemical aldehyde found in blood makes this one time hunter drool there is a way to bring their smelly world to life shiron photography visualizes the ear currents that carry
Example 1 of 10
Quote examples
Tipper Gore
American Celebrity
As parents and as consumers, we have the right and the power to pressure the entertainment industry to respond to our needs. Americans, after all, should insist that every corporate giant - whether it produces chemicals or records - accept responsibility for what it produces.
Quote examples
Mohsin Hamid
Pakistani Writer
Chance plays a powerful role in every life - our brains and personalities are just chemical soup, after all; a few drops here or there matter enormously - but consequences often become more serious as income levels go down.
Quote examples
Amanda Knox
American Educator
I'm very anti-antidepressants. It's not the chemicals of my brain that's a problem; it's reality. I don't think tricking my brain into reinterpreting reality is going to help.
Quote examples
Michael Pollan
American Educator
Basically, farm chemicals are labor-saving devices, and farmers who don't use them - weed killers especially - have to work harder or hire more help.
Quote examples
Ryoji Noyori
Japanese Scientist
My father, Kaneki, was a gifted research director of a chemical company, and his profession strongly influenced the path of my life.
Quote examples
Kate Baldwin
American Actress
Michael John's music is soul-stirring. It gets inside the deepest part of you; it's almost a chemical reaction.
Quote examples
Aubrey McClendon
American Businessman
Modern life would not be possible if it were not for chemicals, nor would modern natural gas production.
Quote examples
Cornelia Parker
English Artist
I always feel my work is a chemical reaction between me and the world, wherever I happen to be.
Quote examples
Joel Robuchon
French Chef
We the chefs have a responsibility to learn about the chemical makeup of food!
Quote examples
Shirley Manson
Scottish Musician
I'm afraid of happy people. They're chemically unbalanced.
Quote examples
Tipper Gore
American Celebrity
As parents and as consumers, we have the right and the power to pressure the entertainment industry to respond to our needs. Americans, after all, should insist that every corporate giant - whether it produces chemicals or records - accept responsibility for what it produces.
Quote examples
Mohsin Hamid
Pakistani Writer
Chance plays a powerful role in every life - our brains and personalities are just chemical soup, after all; a few drops here or there matter enormously - but consequences often become more serious as income levels go down.
Quote examples
Amanda Knox
American Educator
I'm very anti-antidepressants. It's not the chemicals of my brain that's a problem; it's reality. I don't think tricking my brain into reinterpreting reality is going to help.
Quote examples
Michael Pollan
American Educator
Basically, farm chemicals are labor-saving devices, and farmers who don't use them - weed killers especially - have to work harder or hire more help.
Quote examples
Ryoji Noyori
Japanese Scientist
My father, Kaneki, was a gifted research director of a chemical company, and his profession strongly influenced the path of my life.
Quote examples
Kate Baldwin
American Actress
Michael John's music is soul-stirring. It gets inside the deepest part of you; it's almost a chemical reaction.
Quote examples
Aubrey McClendon
American Businessman
Modern life would not be possible if it were not for chemicals, nor would modern natural gas production.
Quote examples
Cornelia Parker
English Artist
I always feel my work is a chemical reaction between me and the world, wherever I happen to be.
Quote examples
Joel Robuchon
French Chef
We the chefs have a responsibility to learn about the chemical makeup of food!
Quote examples
Shirley Manson
Scottish Musician
I'm afraid of happy people. They're chemically unbalanced.
Example 1 of 10
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