Nt1310 Unit 3 Study Guide

Concept 2.1 Matter consists of chemical elements in pure form and in combinations called compounds

2. Describe the three different types of bonds, providing examples of molecules formed through each type of bond. (3 points) Covalent bond, methane. Ionic bond, table salt. Hydrogen bond, water.

Each chemical compounds has a certain percentage of ionic character in its bonds and the remaining percentage as covalent bonds. The only compounds that are accepted as being 100 percent covalent are the chemical combinations that happen between two similar atoms.However if atoms are different in the compound it will present a certain percentage of ionicity in its

I think that this course was scheduled very well and taking a course in under two weeks has definitely been a struggle at times trying to retain so much information yet staying focused on one course at a time is nice. As far as improvements to make this course better, I can not think of anything that I would change to make it better. This is my fourth online course to take through Blinn Community College and I would say that this is the best paced course and most interesting course I have taken so far.

I think the course is very informative and practical. I enjoy your input given trough our weekly meetings and the ideas and opinions that are posted from other teachers in the discussion section. My only concern is the amount of reading assignments that we need to have done every week. It might be that I need to organize my self better. Overall I am enjoying the class. Thank you for the kindness and flexibility that you offer us in case of emergencies or difficult situations.

In chemistry, chemists determine which bond belongs to which molecule have. Electronegativity values are used as well to help determine which bond belongs to which molecule. The bonds scientists use are: covalent bonds, which is when the electrons are shared equally, Polar covalent bonds this is when the electrons are shared unequally, and ionic bonds which are when electrons are transferred from one atom to the other. The difference between the ionic and covalent bonds are: ionic bonds have electrons that are shared between atoms, while covalent bonds have electrons that are shared equally or unequally inside one molecule. Ionic Bonds are formed when a complete transfer of valence electrons between atoms happens. An example of an ionic bond

The atoms are bound by shared electrons in a covalent bond. Even though they share electrons, they do not share them equally. Even though most of the time covalent bonding occurs between nonmetals, there have been times where this type of bonding occurs between a metal and a non metal. Covalent bonds are most likely to occur when molecules have a similar electro negativity level (Gray 76). Elements follow the octet rule because they are the most stable when they have eight electrons in their outer shell. Therefore, by sharing those electrons they fulfill the octet rule and the noble gas configuration. Another way covalent bonds satisfy the octet rule is too form single, double, and triple bonds. It’s easy to differentiate between those bonds, for example a single bond is when two atoms share one pair of electrons, a double bond is when two atoms share two pairs of electrons, and a triple bond is when two atoms share three pairs of electrons. Bond order and length are used to describe the strength of covalent bonds; they both have a direct relationship. Bond order is the amount of bonded pairs between two atoms. Bonding length is the distance between two covalent bonds. Compared to ionic bonds, covalent bonds are have a lower melting and boiling point. They are also less likely to dissolve in water. Not all the pairs of the molecules have the same characteristics. When a pair is not sharing any electrons, that pair is called a lone pair. When a pair is sharing electrons, they are called a bond pair. And finally, a Lewis dot structure is a great way to illustrate a covalent

The two types of bonds that hold atoms within a compound together are ionic and covalent bonds.

The course is going on well. It is not hard, it only requires critical reading and understanding of the textbook. The first challenge I am facing is failing to read the units for weeks 1, 2 and 3. I had problems in downloading the textbook due to network failure. I had to travel to the city, to access network and that was in week four. The second one is, the time allocated to graded quiz was not enough as compared to number of questions. I wish the time could go up to 45 minutes, for 25

There're two types molecular molecules, diatomic or polyatomic. Most commonly molecular elements exist as diatomic molecules meaning they consist of two atoms. An example of Diatomic molecules would be hydrogen H2 or Oxegen O2. Secondly, polyatomic molecules consist of many atoms, more than two. An example of a polyatomic molecule would be sulfur which exist as S8. Polyatomic molecules are not common.

Also, many organic compounds are carbon compounds, and organic compounds exist as mostly mixtures, and there are various techniques to “purity”. Organic compounds are characterized by a variety of chemical tests that are called “wet methods”. Examples of some organic molecules

Atoms are the basis of everything we know of, but molecules are what atoms tend to

My overall experience in this course was wonderful, as I enjoyed doing and administering the assessment tools provided to us. The new assessment materials have impacted me each week’s lecture tremendously. The in-class exercises were practical and assessment tools were spot on although some of the manuals were not useful. The reading material were spot on, as it was coordinated with each week’s lectures. The weekly reading assignments and reflection papers were helpful.

Molecules are categorised by two groups, molecules not consisting of carbon atoms are known as inorganic, and these inorganic molecules generally either dissolve in water or react with water in order to release ions which are commonly known as electrolytes. However, molecules containing both carbon and hydrogen atoms are known as organic but the organic

Covalent bonding is when electrons are shared by atoms, which enables the atoms to gain more stability.