Section 2.1 Atoms, Ions, and Molecules
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Jordan_Star on June 11, 2012
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12 terms
Terms | Definitions |
|---|---|
 Describe the structure of an atom. | Atoms are the smallest basic unit of matter. |
| Describe what is meant by the term element. | One particular type of atom, cannot be broken down into a simpler substance by ordinary chemical means. |
| Give examples of elements. | Hydrogen, oxygen, gold, and aluminum. |
| What is the difference among atoms that make one element different from another element? | The number of protons or neutrons it has. |
| What determines the properties of elements? | --- |
| Define compound and give an example. | Compound: a substance made of atoms of different elements bonded together by covalent bonding. Example: Water and Carbon dioxide. |
| Define ion. | Ion: an atom that has gained or lost one or more electrons. |
| Explain how ions are formed. | Ions are formed when electrons are transfered from one atom to another. |
| Give examples of positive ions and negative ions. | Positive: When it loses 1 electron (on the outer) |
| Explain how ionic bonds are formed. | They form through the electrical force between oppositely charged ions. |
| Explain how covalent bonds are formed. | When atoms share a pair of electrons. |
| Define molecule and give an example. | Molecules: 2 or more atoms held together by covalent bonds. Example: Oxygen. |
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