oxygen and hydrogen
there are no specific elements that can be mentioned here
A compound consists of at least two elements chemically bonded together.
Yes, compounds are made up of two or more elements that are chemically bonded together in fixed ratios. This bonding creates a new substance with unique properties different from the properties of the individual elements.
Disjoint means they have no elements in common. The union is the set of elements containing all elements from both sets. Since there is no overlap, the union will have 5+7 elements. Therefore the answer is 12.
A sentence must contain a subject (who or what the sentence is about) and a predicate (what the subject is doing or what is being said about the subject).
Two sets that contain the same number of elements are called "equinumerous" or "equipollent."
NO, because it is a mixture of two or more elements, containg, at least one metal.
Elements do not contain chemical, but chemicals contain elements. Elements are singular things with a set of properties all their own. There are currently 118 different known elements. Chemicals, which there are thousands of, are made up of two or more elements. Na is sodium(poisonous) and Cl is chlorine(also poisonous). When these two elements combine, you get NACl, which is table salt(not poisonous) and has properties completely different than the two individual elements.
(Cu4O2) contain two elements: copper and oxygen.
Hydrogen and carbon.
No- none of them contain water at all. Water is made up from one hydrogen atom and two oxygen atoms, which are both elements. No element can contain water, as water is made up from elements.
A compound has two or more elements that are chemically combined. It cannot be easily separated which means that is a homogeneous. An example of this would be Sodium Chloride (NaCl.) :)
there are no specific elements that can be mentioned here
A molecule contain two or more chemical elements.
A compound consists of at least two elements chemically bonded together.
Two sets are equal if they both contain the same elements.
Water (H2O), carbon dioxide (CO2), table salt (NaCl), and methane (CH4) are examples of compounds that contain two elements.