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What is the name for two elements that are cheically combined in definite proportions?
Compounds.
How are compounds diffident from mixtures?
Compounds are composed of atoms of different elements chemically bonded in definite proportions. The components of mixtures are not chemically combined and they do not have definite proportions.
What are two or more different atoms are combined in definite proportions in any?
compound
State the law of definite proportions?
The law of definite proportions states that a compound always contains the same elements in the same proportion by mass, regardless of the source of the compound. This means that for a given compound, the ratio of the masses of the elements is always constant.
What is the law that states that a chemical compound always contains the same elements in exactly the same proportions by w eight and mass?
The law you are referring to is the Law of Definite Proportions. This law states that a chemical compound always contains the same elements in the same proportions by mass, regardless of the source of the compound.
Who discovered Law of Definite Proportions?
He combined elements such as iron and copper with oxygen, based off the reaction he found that oxygen's composition was always one of two.
When was the law of definite proportions developed?
The law of definite proportions was developed by Joseph Proust in 1806.
What experiments were used to prove the law of multiple proportions?
The experiments that were done to prove the law of definite proportions are called Proust's Law. These are several experiments conducted to combined different types of atoms in fixed proportions.
What term describes a substance formed by the combination of two ore more elements in definite proportions?
A compound is a substance formed by the combination of two or more elements in definite proportions. Each compound has a specific chemical formula that indicates the types of atoms present and the ratio in which they are combined.
What does the law of constant proportions say about a reaction that has too much of one of the reactants?
The law of definite proportions says that a reaction that has too much of one of the reactants will eventually stop because it will run out of the other reactant(s). This is also referred to as the law of constant composition.
Can the proportions of magnesium and oxygen in magnesium oxide be changed?
No. Magnesium oxide, MgO, is a compound, which means it is a pure substance, in which the magnesium and oxygen are present in definite proportions, in this case 1:1. This is in accordance to the law of definite proportions, which states that every pure substance always contains the same elements combined in the same proportions by weight. Also, magnesium ions have a charge of 2+ and oxide ions have a charge of 2-, so that one magnesium ion combined with one oxide ion balances to an overall charge of zero.
Which of Dalton's four principles support law of definite proportions?
Dalton\'s principle of compounds supports the law of definite proportions.
