Question

Fill in the Venn Diagram below with similarities and differences between
pure substances and mixtures.

Homogeneous
Homogeneous/Heterogeneous
It has fixed boiling point
It has varying boiling point
It melts completely
Some portion seems to be not melting

Mixture



Substance


​

Answer 1

Answer:

Pure substances have specific melting and boiling points. Mixtures melt and boil over a range of temperatures.Mixtures and pure substances are alike because mixtures are made up of two or more pure substances. This means that where pure substances have a single set of properties, mixtures may have two or more sets of the same properties, based on the pure substances that make up the mixture.

Answer 2

Mixtures and substances are two categories of matter.  

Explanation:  

• Mixture are combination of two or more than two substances which can be separated through physical methods.

• Chemical substances are comprised of similar atoms and molecules.

• Heterogeneous Mixture: It is a mixture of two or more substances which can be separated visually.  

• Homogeneous Mixture: It is mixture in which the components have uniform composition and have show same properties.  

Mixture

• Mixtures can be homogeneous or heterogeneous.
• Since mixtures consists of non uniform composition also, so the boiling point is variable and not fixed.
• And this non uniform composition is the reason that some portion of the mixtures does not melt.

Substances

• Substances are homogeneous in nature, there is uniform composition of the components.
• Boiling point for homogeneous mixture is fixed.
• A homogeneous mixture melts completely because they are evenly distributed and it displays same properties.