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20 sty 2023 · Molecules can be made of single types of atoms or of different types. For example, the oxygen in the air is made of two oxygen atoms (O 2), but water is made of two hydrogen atoms and one oxygen atom (H 2 O). nitrogen: A colorless, odorless and nonreactive gaseous element that forms about 78 percent of Earth's atmosphere. Its scientific symbol ...
6 gru 2016 · Water: It is made of two of the three things that you need to make a fire, fuel (hydrogen) and oxygen. And yet it does not burn. My mum says that it is because it is wet, yet oil, petrol and many other wet liquids burn.
12 mar 2018 · The bottom line is that a change in the amount of solar energy reaching Earth may get things going, but it’s CO2 that plays the dominant role. This general picture leaves out some important details, such as the role of fresh water flowing into the oceans as ice sheets melt.
Hydrogen is also odorless and colourless. Unlike carbon dioxide, hydrogen gas is lighter than air and was used extensively in the early 1900s in giant airships. However, hydrogen gas is very explosive.
A molecule of carbon dioxide (CO 2) is made up of one carbon atom and two oxygen atoms. Carbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere. Without it, our planet would be inhospitably cold.
22 maj 2023 · Greenhouse gases are gases—like carbon dioxide (CO 2), methane, and nitrous oxide—that keep the Earth warmer than it would be without them. The reason they warm the Earth has to do with the way energy enters and leaves our atmosphere .
25 wrz 2024 · So is carbon dioxide bad? Here's the big, important thing about CO 2: It's a greenhouse gas. That means CO 2 in the atmosphere traps heat close to Earth. It helps our planet hold onto some of the heat it gets from the Sun so the energy doesn't all escape back into space.
