A star, like the sun, spends much of its life producing energy, in the form of light and heat, through the fusion of hydrogen into helium. When the hydrogen is mostly used up the star moves to fusion of helium into larger (heavier) elements. At that stage the sun will become a red giant. It will then be large enough to engulf the earth's orbit, thyough well before that happens, the earth will be a burnt, lifeless "cinder".
Helium is used in balloons instead of hydrogen because it is non-flammable. Hydrogen is flammable and can be dangerous, while helium is inert and poses less of a fire risk. Additionally, helium is less dense than air, providing better lift for balloons.
Hydrogen is extremely flammable and helium is safer.
Helium is used instead of hydrogen in balloons because it is non-flammable, while hydrogen is highly flammable. This makes helium a safer option for filling balloons to prevent any potential fire hazards. Additionally, helium is also lighter than air, allowing balloons to float easily.
Hydrogen (explosive), Helium (non-explosive).
Because helium (He) is lighter than air and not flammable like Hydrogen (H) which is the lightest element.
The propellant used in hair spay does not contain hydrogen gas or helium gas. Hairspray contains compounds that contain covalently bonded hydrogen.
Helium is used to reaplce hydrogen on a n airplane because it is nonflammable
Hydrogen is highly flammable and can easily explode. Helium is a more stable gas.
Two of the gases that are used to fly balloons are Hydrogen and Helium. Helium is the preferred gas because Hydrogen is very explosive. The Hindenburg disaster was caused by the ignition of the Hydrogen gas that filled it.
Stars are made mostly of hydrogen though there are many other elements that help to build one. And toward the end of its life cycle a star will actually be made of a large portion of helium as well which it will begin to fuse, along with hydrogen or instead of hydrogen, in its core.
hydrogen and helium can be used to pprovide lift in an airship.