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John Dalton observed that elments always combine in the same ratio to form a particular?
compound. This led to the development of the Law of Multiple Proportions, which states that when elements form different compounds, the ratios of the masses of one element that combine with a fixed mass of the other element can be expressed in simple whole numbers.
When the elements combine to form compound how many are there?
Different compounds have different numbers of constituent elements. here is no set number.
Who proposed the theory that the elements in a compound do not always combine in the same fixed ratio?
The theory that elements in a compound do not always combine in the same fixed ratio was proposed by John Dalton in the early 19th century. This idea laid the foundation for the development of the law of multiple proportions, which states that when elements form more than one compound, the ratios of the masses of one element that combine with a fixed mass of the other element can be expressed in small whole numbers.
What do subscripts represent?
Subscripts represent the number of atoms of an element in a molecule. They are written as small numbers to the right of the element symbol in a chemical formula. They indicate the ratio of elements in a compound.
How do you identify a compound or an element?
Elements are pretty much defined by the number of protons in the nucleus. This number (the atomic number) defines the element. All the different elements have different numbers of protons in their nucleus.
John Dalton observed that elments always combine in the same ratio to form a particular?
compound. This led to the development of the Law of Multiple Proportions, which states that when elements form different compounds, the ratios of the masses of one element that combine with a fixed mass of the other element can be expressed in simple whole numbers.
When the elements combine to form compound how many are there?
Different compounds have different numbers of constituent elements. here is no set number.
Who proposed the theory that the elements in a compound do not always combine in the same fixed ratio?
The theory that elements in a compound do not always combine in the same fixed ratio was proposed by John Dalton in the early 19th century. This idea laid the foundation for the development of the law of multiple proportions, which states that when elements form more than one compound, the ratios of the masses of one element that combine with a fixed mass of the other element can be expressed in small whole numbers.
How is a formula of a compound written?
The formula of a compound is written using the symbols of the elements present in the compound and subscript numbers to represent the ratio of each element in the compound. The subscript numbers indicate how many atoms of each element are present in a molecule of the compound.
What are the subsets of a pure substance?
An element and compound. Element- A group of atoms with identical proton numbers, Compound- 2 or more DIFFERENT elements chemically held together.
What do subscripts represent?
Subscripts represent the number of atoms of an element in a molecule. They are written as small numbers to the right of the element symbol in a chemical formula. They indicate the ratio of elements in a compound.
How do you identify a compound or an element?
Elements are pretty much defined by the number of protons in the nucleus. This number (the atomic number) defines the element. All the different elements have different numbers of protons in their nucleus.
How does the chemical formula of a compound relate to the relative number of atoms in the compound?
The chemical formula of a compound provides information about the elements present in the compound and the ratio in which they are combined. The subscripts in the chemical formula indicate the relative number of atoms of each element in a compound.
What is the atomic number for Nacl?
doesn't have one, its a compound. only elements have atomic numbers, which is the number of protons the element has.
What law is described by the fact that the ratio of the mass of oxygen in carbon dioxide to the mass of oxygen in carbon monoxide is 2 1?
This statement illustrates the law of multiple proportions, which states that if two elements form more than one compound between them, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers. You can also put it this way: When two elements (A and B) combine to form more than one compound, the different masses of B that combine with a fixed mass of A are in a simple ratio.
Is CuSO4 is an example of a chemical element?
No. The multiple symbols interrupted by the numbers make it clear that this is a compound. In this case it is copper sulfate, a compound of three elements: copper (Cu), sulfur (S), and oxygen (O).
What term represents a compound?
Compounds can be described using element symbols and numbers
