No a table is not pure.
Helium is pure as it is on the periodic table.
pure substance?
No, it is a mixture; rarely a drug is a pure substance.
substance because you can write it as a formula
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.
Sodium (Na) is a pure substance, listed on the Periodic Table. Table salt however, is Sodium Chloride (NaCl), which is not a pure substance
Helium is pure as it is on the periodic table.
Table salt is a pure substance. It is combined in such a way that it is uniform and definite in composition.
The coffee with added table sugar would be considered a mixture. The table sugar dissolves in the coffee, creating a homogeneous mixture where the sugar molecules are evenly distributed throughout the coffee.
pure substance?
Yes
Chromium is a pure substance. It is a naturally occurring element with a specific atomic structure and chemical composition. It is not composed of different types of atoms or molecules, which is a characteristic of pure substances.
Carbon is a pure substance with the chemical symbol "C"
No, it is a mixture; rarely a drug is a pure substance.
Barium is an element from the periodic table therefore it is neither a mixture or a compound
No a mixture is by definition not a pure substance.
Table salt is a pure substance. It is combined in such a way that it is uniform and definite in composition.