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Which chemical law describes how the composition of compounds is always the same?
Wiki User
∙ 11y ago
It means that the compound, whatever it is, is always that. If we look at something like table salt, which is sodium chloride (NaCl), it will always be NaCl when we see it. Yes, it may separate into ions in solution or something like that, but sodium chloride will always be NaCl. It will always be one atom of sodium ionically bonded to one atom of chlorine. It always has that same composition. :p
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoThis is the law of definite proportions.
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What do Chemical composition describes?
"chemical composition" is talking about the individual chemicals that make up a substance. The chemicals it is composed of. eg, wood is mainly carbon, with some water (which is hydrogen and oxygen) and various minerals.
Do compounds usually have variable ratios where as mixtures usually have fixed ratios?
No, its the opposite. Compounds have fixed ratios, think of H20, while mixtures can vary. You can make many types of mixtures out of the same things. Because of bonding compounds have fixed ratios.
What is a method for showing what a molecule or compound contains?
Chemical analysis shows the contents of compounds and molecules. To identify the compound, you use qualitative analysis. To know exactly how much is present, quantitative analysis should be performed.
Does a change of state always occur in a chemical change?
not always, like the change is in the display without change in composition then it is change of state, other then will be chemical change
What is shales chemical symbol?
It doesn't have one. Shale is a mixture and doesn't always have the same composition. Only elements have chemical symbols
Does the composition of a substance always stay the same?
The composition of pure substances, such as elements and compounds, are always the same. The composition of mixtures can vary.
Do compounds have varying compositions?
No. A compound will always have the same composition.
Do compounds have variable composition?
No. Compounds have a definite composition, therefore they are pure substances. For example, water always has the formula H2O, sodium chloride (common table salt) always has the formula NaCl, and glucose (blood sugar) always has the formula C6H12O6.
What do Chemical composition describes?
"chemical composition" is talking about the individual chemicals that make up a substance. The chemicals it is composed of. eg, wood is mainly carbon, with some water (which is hydrogen and oxygen) and various minerals.
Do compounds usually have variable ratios where as mixtures usually have fixed ratios?
No, its the opposite. Compounds have fixed ratios, think of H20, while mixtures can vary. You can make many types of mixtures out of the same things. Because of bonding compounds have fixed ratios.
Laws of chemical composition?
The laws of chemical composition are fundamental principles in chemistry. The Law of Definite Proportions states that compounds always have fixed proportions of elements by mass. The Law of Multiple Proportions describes how elements can combine in different whole-number ratios to form distinct compounds. The Law of Conservation of Mass asserts that mass is conserved in chemical reactions. Avogadro's Law states that equal volumes of gases at the same temperature and pressure contain the same number of molecules. These laws underpin our understanding of chemical reactions and the behavior of matter, forming the basis for stoichiometry and helping predict and describe chemical outcomes.
Mixtures are always combinations of the same compounds that are at different states?
No, this composition is variable.
What does a chemical change always do?
A chemical change always changes the chemical composition of the reactants to produce products with new and unique properties, different from the reactants.
In a chemical change what is always formed?
A chemical change always forms one or more products which can be elements, molecules, and/or compounds.
Do compounds always contain the same elements in the ratio?
Yes because no samples are exactly the same.
Why does the chemical composition of water always stay the same?
Because water is a compound, a type of pure substance, which has a definite composition.
What is a method for showing what a molecule or compound contains?
Chemical analysis shows the contents of compounds and molecules. To identify the compound, you use qualitative analysis. To know exactly how much is present, quantitative analysis should be performed.
