Test

In: Business and Management

Submitted By notme3
Words 437
Pages 2
Into to Physical Science

Instructor: Olga Gubanova, M.S.

17 February 2013 2013

Assignment 3

Describe the difference between a mixture and a compound. Mixtures consist of

Physical combinations of any amount of different substances that do not chemically

combine in a reaction, While A mixture can be separated into its components by Physical

means, such as Filtration, Solution, Distillation, and Magnetism among others.

Suppose that you have a pure substance. How can you tell whether it is a

compound or an element? Compounds are formed by the Chemical Combination

(reaction) of two or more Pure Elements in definite proportions to form totally new

substances having very different properties to those of the elements of their make up.

Compounds can only be separated by chemical reaction. To tell if it is a compound or an

element, you have to know whether it is the element itself, or made up of 2

or more different elements that can be observed by seeing the formula.

The two types of bonds are ionic bonds and covalent bonds. In an ionic bond, the

atoms are bound together by the attraction between oppositely-charged ions. For

example, sodium and chloride form an ionic bond, to make NaCl, or table salt. In a

covalent bond, the atoms are bound by shared electrons. If the electron is shared equally

between the atoms forming a covalent bond, then the bond is said to be no polar.

Usually, an electron is more attracted to one atom than to another, forming a polar

covalent bond.

Explain why ionic compounds are formed when a metal from the left side of the

periodic table reacts with a nonmetal from the right side. Give two examples of such

compounds. The type of bond formed between 2 atoms is determined by the…...

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