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1. Hydrocarbons: Hydrocarbons are a class of molecules that contain only carbon and hydrogen atoms. Some of them make very good fuels. [100%] 2024-01-11
2. Hydrocarbon: A hydrocarbon is any chemical compound that is constituted of just the elements carbon (C) and hydrogen (H). Each hydrocarbon molecule consists of a carbon backbone, or "carbon skeleton," with hydrogen atoms attached to that backbone. Hydrocarbons are among the ... [90%] 2023-02-03
3. Hydrocarbon: A hydrocarbon (HC) is a substance that is made of carbon and hydrogen in the gaseous, liquid, or solid phase. The molecular structure of hydrocarbon compounds varies from the simplest to the very heavy and very complex. [90%] 2023-02-15 [Organic Chemistry]
4. Hydrocarbon: A hydrocarbon is any chemical compound that is constituted of just the elements carbon (C) and hydrogen (H). Each hydrocarbon molecule consists of a carbon backbone, or "carbon skeleton," with hydrogen atoms attached to that backbone. Hydrocarbons are among the ... [90%] 2023-02-04
5. Hydrocarbon: Hydrocarbon, in chemistry, a compound of carbon and hydrogen. Many occur in nature in the free state: for example, natural gas, petroleum and paraffin are entirely composed of such bodies; other natural sources are india-rubber, turpentine and certain essential ... [90%] 2022-09-02
6. Hydrocarbon: In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons are examples of group 14 hydrides. (Chemistry) [90%] 2023-12-29 [Hydrocarbons]
7. Aromatic hydrocarbons: Aromatic hydrocarbons (also called arenes) are a class of cyclic hydrocarbons with complete conjugation (which often means alternating double and single bonds) in the molecular rings. They tend to be more stable than normal alkenes. [70%] 2023-06-15
8. Hydrocarbon use: Hydrocarbon use is the consumption (by combustion) of hydrocarbons, which are used as fuel. Although this process is often linked to man-made climate change, it is actually uncorrelated with temperature. [64%] 2023-02-24 [Environment]
9. Aromatic hydrocarbon: An aromatic hydrocarbon or arene (or sometimes aryl hydrocarbon) is a hydrocarbon with sigma bonds and delocalized pi electrons between carbon atoms forming a circle. In contrast, aliphatic hydrocarbons lack this delocalization. (Chemistry) [64%] 2023-12-09 [Aromatic hydrocarbons]
10. Hydrocarbon poisoning: Hydrocarbon poisoning is either the swallowing or breathing in of hydrocarbons. Swallowing hydrocarbons may result in symptoms include coughing or vomiting. (Medicine) [64%] 2023-12-21 [Hydrocarbons] [Poisons]...
11. Unburned hydrocarbon: Unburned hydrocarbons (UHCs) are the hydrocarbons emitted after petroleum is burned in an engine. When unburned fuel is emitted from a combustor, the emission is caused by fuel "avoiding" the flame zones. [64%] 2024-01-11 [Fossil fuels] [Hydrocarbons]...
12. Unburned hydrocarbon: Unburned hydrocarbons (UHCs) are the hydrocarbons emitted after petroleum is burned in an engine. When unburned fuel is emitted from a combustor, the emission is caused by fuel "avoiding" the flame zones. (Chemistry) [64%] 2024-01-10 [Hydrocarbons]
13. Hydrocarbon pneumonitis: Hydrocarbon pneumonitis is a kind of chemical pneumonitis which occurs with oral ingestion of hydrocarbons and associated aspiration. It occurs prominently among children, accounting for many hospital admissions each year. (Biology) [64%] 2024-01-11 [Pneumonia]
14. Hydrocarbon mixtures: Hydrocarbon mixtures are a group of various volatile, highly flammable, mixtures used chiefly as nonpolar solvents. Hydrocarbon mixtures are composed of petroleum ethers and other hydrocarbons. (Chemistry) [64%] 2023-11-19 [Alkanes] [Hydrocarbon solvents]...
15. Hydrocarbon indicator: In reflection seismology, a hydrocarbon indicator (HCI) or direct hydrocarbon indicator (DHI) is an anomalous seismic attribute value or pattern that could be explained by the presence of hydrocarbons in an oil or gas reservoir. DHIs are particularly useful in ... (Earth) [64%] 2024-09-23 [Geophysical imaging]
16. Hydrocarbon economy: Hydrocarbon economy is a term referencing the global hydrocarbon industry and its relationship to world markets. Energy used mostly comes from three hydrocarbons: petroleum, coal, and natural gas. (Finance) [64%] 2024-08-11 [Economics catchphrases]
17. Hydrocarbon keratosis: A hydrocarbon keratosis, also known as pitch keratosis, tar keratosis, and tar wart, is a precancerous keratotic skin lesion that occurs in people who have been occupationally exposed to polycyclic aromatic hydrocarbons. (Skin lesion caused by exposure to certain hydrocarbon chemicals) [64%] 2024-08-13 [Dermatologic terminology] [Epidermal nevi, neoplasms, and cysts]...
18. Policyclic Aromatic Hydrocarbons (PAHs): Polycyclic aromatic hydrocarbons (PAHs) are two or more fused benzene rings. They come from incomplete combustion and from pyrolysis of organic compounds. (PAHs) [57%] 2024-01-10
19. Aryl hydrocarbon receptor: The aryl hydrocarbon receptor (also known as AhR, AHR, ahr, ahR, AH receptor, or dioxin receptor) is a protein that in humans is encoded by the AHR gene. The aryl hydrocarbon receptor is a transcription factor that regulates gene expression. (Vertebrate transcription factor) [52%] 2024-01-10 [Receptors] [Transcription factors]...
20. Total petroleum hydrocarbon: Total petroleum hydrocarbons (TPH) is a term used for any mixture of hydrocarbons that are found in crude oil. There are several hundred of these compounds, but not all occur in any one sample. (Chemistry) [52%] 2024-01-11 [Analytical chemistry]