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The Law of Definite Proportions says that a given chemical compound always contains the same proportion by mass of its constituent elements. This is NOT the same as saying that elements always combine in a specific ratio, because they can combine in different ratios in different compounds. An example of this might be copper oxide which can be CuO or Cu2O, showing a different ratio of copper to oxygen. So, the answer to the question, as asked, is no, elements do not always combine in specific ratios.
Wiki User
∙ 8y ago
Wiki User
∙ 13y agoElements combine in definite, but variable proportions, depending on their particular structure and isotope.
Wiki User
∙ 12y agoYes, otherwise it would not be that elemnt
Some elements can have different isotopes.
Wiki User
∙ 13y agoSee the link bellow for the Law of definite proportions. But be sure that this law is not generally valid.
Wiki User
∙ 6y agoFrom many years this affirmation is not considered valid.
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Do elements that combine in changing ratios form mixtures?
No, compounds are formed.
Why do elements join to form compounds in specific ratios?
Elements combine according to the electrons in their outer shell. These allow only certain combinations which form a ratio. Oxygen has 2 + in its outer shell. Hydrogen has 1 - in its outer shell. So the ratio is always 2:1.
What forms a compound?
Atoms of elements combine in fixed ratios will form compounds.
What Elements combine in fixed mass ratios to form compounds This must mean that elements?
Elements are composed of discrete units called atoms.
Did Dalton's atomic theory state that atoms of different elements combine in simple whole-number ratios can form compounds?
John Dalton, the father of modern chemistry, said that atoms combine in simple whole-number rations to form compounds.
What type of matter is made of elements in a specific ratio that is always the same?
Elements combined in specific ratios form compounds.
Do elements that combine in changing ratios form mixtures?
No, compounds are formed.
What do you get with changing ratios that combine in elements?
In this mode different compounds are obtained.
Which elements proved difficult for mendeleev to add to his table because they were found to combine in various ratios with other elements?
Copper and magnesium are elements that were difficult for Mendeleev to add to his table because they were found to combine in various ratios with other elements.copper and manganese
What forms a compound?
Atoms of elements combine in fixed ratios will form compounds.
Why do elements join to form compounds in specific ratios?
Elements combine according to the electrons in their outer shell. These allow only certain combinations which form a ratio. Oxygen has 2 + in its outer shell. Hydrogen has 1 - in its outer shell. So the ratio is always 2:1.
What Elements combine in fixed mass ratios to form compounds This must mean that elements?
Elements are composed of discrete units called atoms.
What do compounds always contain exact ratios of?
elements
What chemical elements are in monosaccharide?
The chemical elements present in monosaccharides are carbon (C), hydrogen (H), and oxygen (O). These elements combine in specific ratios to form different types of monosaccharides, such as glucose, fructose, and galactose.
Which describes john daltons observation of elements in any given compound?
One of the best ways to describe John Dalton's observations of elements is that they are made of small particles. The atoms join in simple whole number ratios when the elements react.
Did Dalton's atomic theory state that atoms of different elements combine in simple whole-number ratios can form compounds?
John Dalton, the father of modern chemistry, said that atoms combine in simple whole-number rations to form compounds.
Do atoms combine to form molecules in simple whole number ratios?
They do combine in whole number ratios, but these ratios need not be simple - particularly in some organic compounds.
