The Alkali metals (namely, Lithium, sodium, Potassium, Rubidium, Caesium and Francium in that order).
The elements are: two hydrogen atoms and one oxygen atom. Combined they form water (H2O).
Each element can form stable, less stable or unstable compounds.
Two elements are combined together in water: hydrogen and oxygen. Water has a chemical formula of H2O, which means each water molecule contains two hydrogen atoms and one oxygen atom.
Unstable chemical elements are disintegrated by radioactive decay.
Chemical elements are combined to produce chemical compounds.
The elements are: two hydrogen atoms and one oxygen atom. Combined they form water (H2O).
Each element can form stable, less stable or unstable compounds.
Two elements are combined together in water: hydrogen and oxygen. Water has a chemical formula of H2O, which means each water molecule contains two hydrogen atoms and one oxygen atom.
Unstable chemical elements are disintegrated by radioactive decay.
Radioactive elements are unstable, and the shorter the half-life, the more unstable they are.
The water molecule contains two different elements chemically combined, which makes it a compound. A compound is a pure substance that contains two or more different elements chemically combined.
Hydrogen and Oxygen
Unstable elements that decay or break down into different elements are called radioactive elements. These elements have an unstable atomic nucleus that undergoes radioactive decay, transforming into a different element and releasing energy in the process. Examples of radioactive elements include uranium, radium, and plutonium.
Hydroden and oxygen. H2o
Water is H2O, two hydrogen atoms and one oxygen atoms.
Elements are combined into molecules, which, when combined in big groups, make up the things that are around us. Ex: H = Hydrogen, 0 = Oxygen, H₂O = Water
Elements are not typically used in their pure elemental form for practical reasons. The elemental form of many elements is unstable or reactive, making it difficult to work with. Instead, elements are often combined with other elements to form compounds, which can have more desirable properties for use in various applications.