What are 3 differences between heterogeneous mixtures and homogeneous mixtures?
1- In a homogeneous mixture the particles of solute are completely mixed in the layers of the solvent. 2- The size of particles is extremely small. Whereas in a heterogeneous mixture the solute particles settle on the bottom of the solvent. 3- The particle is also not too small.
Scientifically speaking, a homogeneous mixture is one in which different parts (such as salt and water) have been uniformly combined into a new substance (salt water), while a heterogeneous mixture has parts that remain separate.
The chemical composition of compounds is always fixed. A mixture can have a variable composition of the substances forming it. Mixtures can either be homogeneous or heterogeneous in nature. The constituents of a compound can only be separated by either chemical or electrochemical methods (like extraction).
A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances or phases. The three phases or states of matter are gas, liquid, and solid.
Homogenous mixtures generally have a uniform composition throughout the mixture whereas Heterogeneous mixtures have composition which may vary from point to point. In Homogenous mixtures, the whole mixture is in the same phase whereas in Heterogeneous mixture, substances can be of two phases and layers may separate.
A homogeneous mixture has the same composition throughout. A heterogeneous mixture varies in its composition. Mixtures can be classified on the basis of particle size into three different types: solutions, suspensions, and colloids. The components of a mixture retain their own physical properties.
If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture.
A heterogeneous mixture consists of substances which remain physically separate. It can easily be separated into its constituents by processes such as filtering, hand picking, magnetic separation etc. Example- a mixture of sand and marble.
Examples of homogeneous mixtures include air, saline solution, most alloys, and bitumen. Examples of heterogeneous mixtures include sand, oil and water, and chicken noodle soup.
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| Homogeneous mixture | Heterogeneous mixture |
|---|---|
| Example: Salt dissolved in water is a homogeneous mixture. | Example: Iron filings mixed in sand is a heterogeneous mixture. |
What is the main difference between a compound and a mixture?
Compounds are those substances which can be created by the chemical combination of two or more elements. Mixtures are those substances that are created by a physical combination of two or more substances.
Pure substances are compounds. Impure substances are Mixtures. The key difference between compounds and mixtures is that a compound is made up of molecules, each of which is composed of two or more different types of chemically bound atoms.