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chemical

chemical

423 3.2
A substance made or used when materials react
  • noun
  • /ˈkɛmɪkəl/
: sustancia química
  • Over 40 of these are harmful chemicals that are known to cause cancer and other smoking-related diseases.
  • toxic chemicals
  • hazardous chemicals
  • harmful chemicals

So we're going to store this chemical for you.

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Examples

  • Study suggests that that chemical could be linked to cancer.

  • Here on Earth, these chemicals come from living organisms.

  • So we're going to store this chemical for you.

  • However, concerns arose about toxic chemicals being present in this type of water.

    Academic text (1999)
  • And it's the natural chemical compound geosmin.

  • Leading scientists point to hormone disruption chemicals as one of the causes.

  • The chemical housings open, and the chemicals begin to spill and drop through brass tubes.

    Fiction book (1991)
  • The lab technician carefully labeled the chemical before storing it in the cabinet.

  • The researchers discovered that the chemical used in the experiment had unexpected results.

  • Farmers are warned about the potential harms of using certain chemicals on their crops.

Synonyms

substance
vschemical
367 2.8

A physical material that objects are made of

focuses on materials made or used in processes that change atoms or molecules
chemical substance
vschemical
  • Specialized
3 3.2

A material used in reactions or to make other things like medicines

is used more generally for items made or used in such processes without exact composition

Compounds

chemical weapon
  • Literature
138 4.6

A harmful chemical that kills or hurts people, animals and plants in war

chemical plant
  • Specialized
27 3.6

A factory that makes chemicals in large amounts

chemical reaction
  • Specialized
25 3.1

A change where substances turn into different substances

chemical warfare
  • Specialized
15 5.6

The use of poisonous chemicals as weapons to kill or hurt people

chemical agent
  • Specialized
13 4.1

A substance used to cause or speed up a change in other substances

chemical compound
  • Specialized
11 2.8

A substance made of two or more elements joined in fixed amounts, like water

A change in brain chemicals that affects mood and thinking

chemical analysis
  • Specialized
8 3.5

To test a substance to find what elements or compounds are in it

Businesses and factories that make materials used in medicines, plastics and cleaners

chemical engineering
  • Specialized
6 4.1

A field that designs machines and processes using chemistry to make products like fuels and plastics

A substance that can cause harm to people, animals, or the environment

chemical process
  • Specialized
5 3.5

A process that changes the tiny particles that make a substance

chemical element
  • Specialized
3 3.7

A pure substance made of atoms that all have the same number of protons, like oxygen or gold

chemical substance
  • Specialized
3 3.2

A material used in reactions or to make other things like medicines

3 5.8

A weapon that releases toxic chemicals when it explodes to kill or harm people

chemical energy
  • Specialized
3 4.0

Power stored inside substances that is released when they react together

chemical formula
  • Specialized
3 3.6

Symbols that show which elements are in a substance and how many of each

chemical change
  • Specialized
3 3.7

A process that turns one substance into a different one by changing its atoms or molecules

An international agreement that bans creating, storing, moving or using chemical weapons

chemical bond
  • Specialized
2 3.4

A force that holds atoms or ions together to form a compound

chemical terrorism
  • Specialized
1 7.9

Using dangerous chemicals as weapons to harm people and cause fear

chemical equilibrium
  • Specialized
1 5.1

A state in a reaction where forward and reverse reactions happen equally so amounts stay constant

An international group that helps countries destroy chemical weapons and checks they do not make or use them

chemical balance
  • Specialized
1 6.1

An exact scale in a lab for measuring very small amounts of chemicals

chemical defense
  • Specialized
1 4.4

Actions and equipment used to protect people and deal with attacks or accidents involving dangerous chemicals

chemical mechanism
  • Specialized
1 4.5

Steps that show how a chemical reaction happens

chemical attraction
  • Specialized
1 3.5

A force that pulls atoms together to form molecules

chemical reactor
  • Specialized
1 4.4

A container or device that holds and controls chemical reactions

chemical group
  • Specialized
1 3.5

A small group of atoms joined together that is part of a larger molecule and gives it certain properties

chemical property
  • Specialized
1 5.1

How a substance reacts in a chemical reaction and becomes a different substance

chemical action
  • Specialized
1 3.5

A process in which substances change into new substances, for example rusting or cooking

1 4.9

A chemical test that measures how much of each substance is in a sample

chemical chain
  • Specialized
1 4.5

A long series of atoms joined together that forms part of a molecule like in plastic

chemical irritant
  • Specialized
1 4.8

A substance that makes skin, eyes or breathing feel sore, like tear gas

research chemical
  • Specialized
1 7.1

A substance made in a lab for scientists to test, not for medical use

chemical phenomenon
  • Specialized
1 4.6

A change where substances become new substances when they react together

chemical diabetes
  • Specialized
1 5.3

A mild form of diabetes that shows abnormal blood sugar tests but no clear symptoms

chemical notation
  • Specialized
1 5.3

A system of symbols and formulas that shows chemical elements, compounds, and reactions

1 6.8

A liquid spray that makes eyes burn and makes people feel dizzy so they cannot move

A chemical reaction where one compound breaks into two or more different substances

Use of poisonous gas or chemicals in war to kill and hurt soldiers

6.5

A rule that in a reversible chemical reaction the forward and reverse reactions happen at the same rate at equilibrium

A drug sold for people to take with unknown effects and risks

A chemical used in scientific research that is not controlled by authorities

How Experimental

research chemical
  • Specialized
1 7.1
designer drug
  • NSFW
7 7.6
chemical
423 3.2
pharmaceutical
  • Specialized
41 4.6

Surface Forms

chemical singular
chemicals plural

Etymology

Chemical as a noun comes from the same root as alchemy and chemistry, which were about changing and testing materials. So a 'chemical' today is a substance used in a process that makes changes, for example in a lab or a factory.