Carbon dioxide - Wikipedia
Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature and at normally-encountered concentrations it is …
Carbon dioxide | Definition, Formula, Uses, & Facts | Britannica
6 天之前 · Carbon dioxide, a colorless gas having a faint sharp odor and a sour taste. It is a greenhouse gas, but it is a minor component of Earth’s atmosphere, formed in combustion of carbon-containing materials, in fermentation, in respiration of animals, and employed by plants in the photosynthesis of carbohydrates.
Carbon dioxide - Simple English Wikipedia, the free encyclopedia
Carbon dioxide is an end product in organisms that obtain energy from breaking down sugars, fats and amino acids with oxygen as part of their metabolism. This is a process known as cellular respiration. This includes most animals, many fungi and some bacteria.
Carbon Dioxide - Center for Science Education
Carbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere. Without it, our planet would be inhospitably cold. However, an increase in CO 2 concentrations in our …
Carbon Dioxide - Climate Change: Vital Signs of the Planet
Carbon dioxide (CO 2) is an important heat-trapping gas, also known as a greenhouse gas, that comes from the extraction and burning of fossil fuels (such as coal, oil, and natural gas), from wildfires, and natural processes like volcanic eruptions.
Carbon Dioxide Emissions - US EPA
2025年1月16日 · Carbon dioxide (CO 2) is the primary greenhouse gas emitted through human activities. In 2022, CO 2 accounted for 80% of all U.S. greenhouse gas emissions from human activities.
Carbon Dioxide - Encyclopedia.com
2018年5月29日 · Carbon dioxide is a heavy, odorless, colorless, faintly acid-tasting, and non-flammable gas (at room temperature) that is released during respiration, combustion, and by the decomposition of organic substances, which is then mostly absorbed from the air by plants in the process called photosynthesis.
Carbon Dioxide | CO2 | CID 280 - PubChem
Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Relatively nontoxic and noncombustible. Heavier than air and may asphyxiate by the displacement of air. Soluble in water. Forms carbonic acid, a mild acid. Under prolonged exposure to heat or fire the container may rupture violently and rocket.
Understanding the basics of carbon dioxide - NOAA Research
2024年6月28日 · Carbon dioxide is a gas produced when an organic carbon compound (such as wood) or fossilized organic matter (such as coal, oil, or natural gas) is burned in the presence of oxygen.
Carbon Dioxide 101 | netl.doe.gov - National Energy Technology …
Carbon dioxide (commonly abbreviated as CO 2) is a clear gas composed of one atom of carbon (C) and two atoms of oxygen (O). Carbon dioxide is one of many molecules where carbon is commonly found on the Earth. It does not burn, and in standard temperature and pressure conditions it is stable, inert, and non-toxic.