A mixture is formed when two or more substances are physically mixed together. A compound is formed when two or more substances are chemically combined through a chemical reaction. The components of a mixture can be separated with relative ease, whereas the components of a compound are almost impossible to separate without a chemical reaction.Continue Reading
A mixture involves the physical combination of substances. The substances can be combined in any ratio to form the mixture, and the individual substances retain their chemical properties.
A compound requires a chemical reaction between two or more substances and the compound formed has different chemical properties compared to the individual substances that were initially combined. Unlike mixtures, compounds can only be formed if the substances are combined in certain fixed ratios.
Mixtures are easy to separate to their individual components through physical means such as evaporation, filtration, distillation, precipitation and chromatography. Compounds cannot be broken down to their individual elements through physical means. For example, to form a mixture of iron filings and sulfur powder, any ratio of iron to sulfur can be used to mix the components. However, to form a compound, seven parts of iron filings have to be heated with four parts of sulfur powder to form a compound called iron sulphide. To separate the iron from sulfur in a mixture, a magnet can be used to attract all the iron filings, leaving only the sulfur behind. The compound iron sulphide cannot be separated using any physical means.Learn more about Solutions & Mixtures
A heterogenous mixture is a mixture that consists of many visibly different substances or phases. The three phases that may be in a heterogenous mixture include gas, solid, and liquid.Full Answer >
A mixture is the result of combining two or more substances that do not react chemically. In order for a solution or combination to be labelled as a mixture, it must be possible to separate the individual components through physical means, without resorting to chemical reactions.Full Answer >
Sea water is a compound mixture of water, salts and minerals, and it contains trace amounts of atmospheric gases. Sea water is abundant and covers about 70 percent of the Earth's surface.Full Answer >
A racemic mixture is a mixture with equal amounts of two different stereoisomers of a chemical compound. These stereoisomers are mirror images of one another that cannot be superimposed onto one another. These types of stereoisomers are also called enantiomers.Full Answer >