Salt, or table salt (NaCl) is a substance because NaCl is a compound. However, salt dissolved in water is a mixture because the sodium and chlorine ions dissociate.
No a table is not pure.
Pure salt is a compound made from Sodium (Na) and Chlorine (Cl). Its formula is NaCl and it is a pure substance not a mixture. However, most salt you purchase from a shop as' Table Salt' is iodised (for health reasons) and contains anti caking agents (to make it run). That is, it has had iodine other substances added to it. This makes Table Salt a mixture.
pure substance?
No, it is a mixture; rarely a drug is a pure substance.
Table sugar is a pure substance. It is made up of one type of molecule that cannot be separated into two or more components. Mixtures can be separated. For example, a mixture of water and sand can be separated into two components. Other examples of pure substances are diamonds, and table salt.
No a table is not pure.
Pure salt is a compound made from Sodium (Na) and Chlorine (Cl). Its formula is NaCl and it is a pure substance not a mixture. However, most salt you purchase from a shop as' Table Salt' is iodised (for health reasons) and contains anti caking agents (to make it run). That is, it has had iodine other substances added to it. This makes Table Salt a mixture.
Table salt is a pure substance. It is combined in such a way that it is uniform and definite in composition.
Barium is an element from the periodic table therefore it is neither a mixture or a compound
Sodium (Na) is a pure substance, listed on the Periodic Table. Table salt however, is Sodium Chloride (NaCl), which is not a pure substance
pure substance?
Yes
Sodium chloride (table salt) is a pure substance because it is a compound made up of sodium and chloride ions in a fixed ratio. It is not a mixture because it cannot be separated into its components by physical means.
No, it is a mixture; rarely a drug is a pure substance.
No a mixture is by definition not a pure substance.
Yogurt is not a pure substance because its a mixture of different elements/molecules (Cow milk and sugar and more...) from the Periodic Table
pure substance