It is not obligatory.
Yes, formaldehyde is considered a homogeneous compound because it consists of identical molecules throughout its structure. Its chemical composition is consistent and uniform, making it a homogeneous substance.
Compounds and solutions are pure substances
Some people divide matter into pure substances and mixtures. Pure substances are elements and compounds. Mixtures include homogeneous and heterogeneous mixtures. Some people divide matter into homogeneous matter and heterogeneous matter. Homogeneous matter includes pure substances and homogeneous mixtures (solutions). Heterogeneous matter is heterogeneous mixtures.
solids and liquids (gas and plasma are secondary categories) Historically As defined by Robert Boyle: 1) Elements: could not be broken down into simpler substances 2) Compounds: Could be broken down via physical or chemical process.
Yes, pure substances are generally homogeneous in appearance, meaning they have consistent properties throughout. This is because pure substances are composed of only one type of molecule or atom, leading to uniform characteristics such as color, texture, and composition.
Pure water is homogeneous because it is made of a single phase, meaning it has a uniform composition throughout. This means that all parts of the water have the same properties, making it a homogeneous mixture.
Yes, the terms heterogeneous and homogeneous can be applied to both pure substances and mixtures. A pure substance can be either homogeneous (uniform composition) or heterogeneous (non-uniform composition), depending on its physical properties. Similarly, a mixture can also be classified as either homogeneous (uniform composition) or heterogeneous (non-uniform composition) based on the distribution of its components.
A pure substance is a homogeneous chemical substance which means its composition is constant and its properties are consistent too. Some examples of this kind of substances are water, baking soda and sucrose.
solution
Pure substances come up into mixtures because different substances can combine physically without undergoing a chemical reaction. These mixtures can be either homogeneous (uniform composition) or heterogeneous (non-uniform composition) depending on the interactions between the pure substances. Mixing pure substances allows for the creation of new materials with unique properties and characteristics.
Liquid bromine is classified as a pure substance. It consists solely of bromine atoms and does not contain any other substances mixed in, making it a homogeneous substance.
Pure water is homogeneous. It is a single chemical compound, H2O ... no mixing required.