THe elements
Water is a compound of hydrogen and oxygen.
hydrogen (75%) and helium (25%), roughly yes, but to be more precise: The sun consists of 71 % Hydrogen, 27 % Helium, 1 % Oxygen and the last percent is made of Carbon, Nitrogen, Silicon, Magnesium, Neon, Iron and Sulfur.
which of these elements must be in organic compuonds oxygen hydrogen carbon helium or iron
No. Both are elements. Helium is a noble gas and iron is a transition metal.
Helium is classified as a light element because it has a low atomic mass compared to other elements like oxygen or iron. It is lighter than air, which is why helium-filled balloons float.
Eath
Theres iron in the core so there is a lot of iron. It also has hydrogen, oxygen helium and a little magnesium.
Earth
Water is a compound of hydrogen and oxygen.
hydrogen (75%) and helium (25%), roughly yes, but to be more precise: The sun consists of 71 % Hydrogen, 27 % Helium, 1 % Oxygen and the last percent is made of Carbon, Nitrogen, Silicon, Magnesium, Neon, Iron and Sulfur.
which of these elements must be in organic compuonds oxygen hydrogen carbon helium or iron
hydrogen fusing to make helium The sun is made completely of a mixture of 75% hydrogen 25% helium. 74% hydrogen, 24% helium, iron, nickel, oxygen, silicon, sulfur, magnesium, carbon, neon, calcium, chromium, and 1% oxygen.
Stars are primarily made of hydrogen and helium, with trace amounts of other elements like carbon, oxygen, and iron. These elements are formed through nuclear fusion in the cores of stars.
No. Both are elements. Helium is a noble gas and iron is a transition metal.
Helium is classified as a light element because it has a low atomic mass compared to other elements like oxygen or iron. It is lighter than air, which is why helium-filled balloons float.
Helium is a gas that is lighter than air. Iron is a solid metal and is heavy.
Elements with only one type of atom: Mercury (Hg), Iron (Fe), Helium (He), oxygen (O or O2), bromine (Br or Br2) Elements with more than one type of atoms: Water (H2O), carbon dioxide (CO2)