It may be a compound as CaCO3 which on heating gives CaO and CO2, it may be a mixture as mixture of Naphthalene and sand which on heating gives naphthalene and sand.
Sugar is a compound. It consists of several different elements depending on the type of sugar. A compound is formed by a chemical reaction and cannot be separated. You can't separate sugar into other substances physically.
the term compound itself implies that two or more things come together to form a whole new something. elements on the other hand are pure substances. For instance, take the example of compound words. These are new words that are formed when two words are logically joined to form a new word eg: cup and board gives us cup-board. (can u see where this is going) or if each letter of the alphabet was an element, then words would be compounds. Therefore, a compound is not a pure substance but a mixture of two or more substances to form a new substance. (hope this is rite :)
Ibuprofen is just a brand name for the actual chemical, an aromatised propanoic acid, which gives the desired pain relief effect. Most commercially available ibuprofen, in painkillers, is often sold in a mixture with paracetamol and caffeine so that the pain relief effects are felt faster. So in answer to your question Ibuprofen itself is a pure substance, but most over-the-counter Ibuprofen tablets etc are sold as mixtures with other pain relievers and caffeine.
Yes, if a substance changes its color and gives off a gas when heated, it is likely a compound undergoing a chemical reaction. The change in color and evolution of gas suggest that new substances are being formed through chemical bonds breaking and forming.
FES is referred to as a compound because it is a chemical substance composed of two or more elements in a fixed ratio. In the case of FES, it is composed of iron (Fe) and sulfur (S) atoms in a specific stoichiometric ratio, which gives it the chemical properties unique to the compound.
To determine the mole fraction of a substance in a mixture, you divide the moles of the substance by the total moles of all substances in the mixture. This gives you a ratio that represents the proportion of that substance in the mixture.
Sugar is a compound. It consists of several different elements depending on the type of sugar. A compound is formed by a chemical reaction and cannot be separated. You can't separate sugar into other substances physically.
The components of a pure substance can be either molecules or atoms.
Soda water is a mixture not a pure substance
The formula of a substance provides information about the types and numbers of atoms present in that substance. It gives the chemical composition of the compound, allowing us to understand its properties and behavior. The formula is critical for identifying and categorizing different substances in chemistry.
the term compound itself implies that two or more things come together to form a whole new something. elements on the other hand are pure substances. For instance, take the example of compound words. These are new words that are formed when two words are logically joined to form a new word eg: cup and board gives us cup-board. (can u see where this is going) or if each letter of the alphabet was an element, then words would be compounds. Therefore, a compound is not a pure substance but a mixture of two or more substances to form a new substance. (hope this is rite :)
The mixture of calcium and phosphorus that mineralizes bone is called hydroxyapatite. This compound gives bones their hardness and strength.
Heating a substance can result in a chemical reaction, which usually results in a simple combustion reaction. This is because Oxygen, or O2, is added to the substance, which can dramatically alter the substance.
It is a mixture.
Ibuprofen is just a brand name for the actual chemical, an aromatised propanoic acid, which gives the desired pain relief effect. Most commercially available ibuprofen, in painkillers, is often sold in a mixture with paracetamol and caffeine so that the pain relief effects are felt faster. So in answer to your question Ibuprofen itself is a pure substance, but most over-the-counter Ibuprofen tablets etc are sold as mixtures with other pain relievers and caffeine.
which is not true about the chemical formula of a sbstance? a.it gives the number and kinds of atoms present. b.it shows that a substance has a definite compound. c.it shows the elements present in the compound. d.it shows the phase of a substance.
The concentrations of the components of a mixture may vary. However, a pure substance has a definite composition that does not vary.