Carbon and oxygen
including "unknown elements" there are 59 elements in half of the periodic table, not including them there is 55.5 Added: 92 natural elements/2 = 46 natural elements make up 1/2 periodic table.
Iron and oxygen
A substance made up of the atoms of two or more elements is called a compound. Compounds form when different elements chemically bond together in specific ratios. The properties of compounds are different from the properties of the individual elements that make them up.
There are two different elements in a molecule of CO2, carbon (C) and oxygen (O).
hydrogen mainly, but there undergo fission to form helium (which undergo fission as the star approaches supernova producing the heavy elements like carbon)
2
Well there are 2 hydrogen atoms and 1 oxygen atom so therefore the answer is 2 different elements that make up h2o
Yes, chemical compounds are made up of elements combined together.
Hydrogen and helium.
carbon dioxide and nitrogen are 2.
Xylem may be made up of tracheids and vessel elements.
2 atoms of Hydrogen and 1 of Oxygen
2 hydrogens atoms and 1 oxygen atom H2O
Hydrogen and helium make up the majority of Jupiter's atmosphere, with hydrogen being the most abundant element. These two elements make up more than 99% of the planet's atmosphere.
Three other elements that make up most organic compounds are: 1. NITROGEN 2. HYDROGEN 3. OXYGEN
Calcium (Ca) and sulfur (S) are the two elements that make up calcium sulfate (CaSO4).
Nitrogen (78%) and Oxygen (21%) are the two main elements that make up approximately 99% of the Earth's atmosphere.