What are Macro-molecules

 


Macro-molecules are giant covalent structures made by covalent bonds in which a lot of nonmetal atoms bond in order to gain stability by sharing their atoms. Another word for macro-molecule is giant covalent structure or polymer. The atoms are arranged in giant lattices which are formed because of the attractive forces between the atoms. Substances which are bonded covalently to form giant covalent structures have a very high melting point and the boiling point which means it’s very difficult to break them apart.  However, doing your masters in chemistry and got stuck while writing your dissertation no problem just contact Dissertation Provider In the UK who will facilitate you and prepare your dissertation and make it a scope of ice cream for you!!!!

ILLUSTRATION OF MACRO-MOLECULES

There are three most common giant covalent structures are discussed below:

Diamond

Diamond is an allotrope of carbon. Allotropes are forms of an element that exists in the same state (solid, liquid, gas) but have different properties because their atoms are arranged differently. The properties of diamond include:

·         It has a high melting and boiling point because of the strong forces of attraction formed between the atoms.

·         It’s shiny, colourless, clear, and hard.

·         It’s insoluble in water and cannot conduct electricity because there are no electrons that are free to move.

However, the diamond has many uses. It is used in jewellery because when cut by experts it sparkles glows and reflects light in an attractive way. Its hardness and high melting point make it useful for cutting tools such as diamond-tipped discs are used to cut bricks and concrete. Heavy-duty drill bits are made up of diamond so that they stay sharp for longer. Diamond has a giant molecular structure.  Each carbon atom is bonded covalently to other four atoms well this makes the lattice and forces of attraction stronger and that’s why a diamond has a high melting and boiling point.

Graphite

It’s another allotrope of carbon. The properties include:

·         It’s lustrous and slippery

·         Have high melting and boiling point.

·         Insoluble in water

·         Black and opaque

·         It can conduct electricity because it has electrons that are free to move

Graphite is used inside the pencils. It slips off easily onto the paper and leaves a black mark. It’s also a component of many lubricants for example bicycle chain oil because it is slippery. However, each carbon atom is only covalently bonded to other three carbon atoms. Graphite contains layers of carbon atoms. The layers slide over each other because these layers have weak forces of attraction and this is why graphite is slippery.

Silica

Silicon dioxide also known as silica is another giant covalent structure. Each silicon atom is covalently bonded to four oxygen atoms and each oxygen atom is covalently bonded to two silicon atoms. Silicon dioxide is found as quartz and is the major compound in sandstone. The sand on the beach is mostly made up of silicon dioxide. It has the following properties:

·         It’s very hard

·         It cannot conduct electricity

·         Have a high melting and boiling point and its insoluble in water

Silica gel packets are used to absorb moisture and keep things dry. Silica gel packets can be used to save cell phones from water damage, to help keep photos safe and free from moisture, to help preserve ornaments and decorations. However, while writing your dissertation you might need some further information or assistance about these structures, so you can approach our expert team of Dissertation Provider In UK to take additional guideline!!!


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