A carcinogen is any substance, radionuclide or radiation that is an agent directly involved in the exacerbation of cancer or in the increase of its propagation. This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes. ...
carcinogenic - causing or tending to cause cancer; "the carcinogenic action of certain chemicals"
Carcinogenesis (the creation of cancer), is the process by which normal cells are transformed into cancer cells.any substance that produces cancer
carcinogenesis - The creation of cancer cells
A chemical or physical agent that encourages cells to develop cancer.
A cancer causing agent
A substance which is known to cause cancer. For example, UV-radiation is considered to be a carcinogen and increase the risk of skin cancer
A chemical or other substance that causes cancer; tobacco smoke has more than 40 known carcinogens.
Any substance that initiates or promotes the development of cancer. For example, asbestos is a proven carcinogen.
An agent known to cause cancer; a cancer-producing substance.
carcinogenic - a carcinogen is a chemical known or believed to cause cancer in mammals. Some chemicals are proven carcinogens, but many more are suspected to be carcinogenic.
carcinogenic - a substance that has the capability of causing cancer. Read more on hazardous substances.
carcinogenic - capable of causing cancer
It is important to stress that there are various classifications of carcinogens. Over half of the almost 1,000 listed are not believed to be carcinogenic to humans (a very useful propoganda source!). From the IARC website:
Group 1Carcinogenic to humans107 agentsGroup 2AProbably carcinogenic to humans59Group 2BPossibly carcinogenic to humans266Group 3Not classifiable as to its carcinogenicity to humans508Group 4Probably not carcinogenic to humans1 A toxin linked to an increased risk of cancer
They can both help and hurt the environment. Some chemicals are necessary such as water, minerals, and the air we breathe. The exact effects depend on the exact chemicals. Some chemical waste can harm plants, wildlife, or even humans. Some chemicals such as phosphates can cause excessive red algae to grow in bodies of water. Oil and petrochemicals in the water can kill birds and fish.
Chemists study atoms and how they behave in the physical world
The purpose of the scientific method is to remove as much human bias and opinions from science.
A biologist is a scientist devoted to and producing results in biology through the study of life. Typically biologists study organisms and their relationship to their environment. Biologists involved in basic research attempt to discover underlying mechanisms that govern how organisms work. Biologists involved in applied research attempt to develop or improve medical, industrial or agricultural processes.
A "strong" acid (or base) is one that dissociates completely in dilute aqueous solution. One which does not is a "weak" acid (or base). An acid with a pKa (or a base with a pKb) lower than about -2 is considered to be a "strong" acid.
Weak acids and bases can still be quite corrosive. HF is a "weak" acid with a pKa of around 3.2 (which corresponds to only about one molecule out of every 38 or so being dissociated), but it's pretty terrible stuff and will dissolve even glass.
a base dissociation constant is the rate of the equilibrium that is reached when a weak base is added to water, producing it's conjugate acid and hydroxide ions.
HCI (Hydrochloric acid)
1/2 is less than one.
Engineers design new products that you buy. They design everything from bridges to planes to computers.
Katia was going to teach them a lesson they'd never forget.
No way, she thought, this is ridiculous.
scientists test and continue to retest both new and old chemicals even if they have been tested before
It helps us make informed decisions.
They Can Cause Cancer
Atoms cannot be divided
Chemists have developed medicine to fight leukemia.
People can be exposed to chemicals on farms, in factories, and even in homes.
Possibly a chemist.
In every area of work
Finding out that asbestos is dangerous and limiting its use in building materials
The causes of honeybee deaths in beehives
By using what they know to produce new nd helpful products
Televisions that contain dangerous chemicals being thrown in landfills.
savage and war-hungry
All chemicals in the lab are to be considered dangerous. ... Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.