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24 Cards in this Set
- Front
- Back
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What is an interaction that holds two atoms together? |
Chemical Bond |
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What is the joining of atoms to form new substances? |
Chemical Bonding |
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What do elements within a group have the same number of? |
Valance Electrons |
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What do atoms gain, lose, or share when they bond? |
Electrons |
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What is a chemical bond that forms when electrons are transferred from one atom to the other? |
Ionic bond |
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Charged particles that form when atoms gain or lose electrons are... |
Ions |
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What happens when atoms lose electrons through an ionic bond? |
They become positively charged |
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What happens when atoms gain electrons through an ionic bond? |
They become negatively charged |
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Most metals have... |
Few valence electrons and form poitive ions |
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O -2. How many electrons did this oxygen ion gain? |
2 |
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When ions bond, they form a repeating three-dimensional pattern called a... |
Crystal Lattice |
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Ionic bonding usually occurs between atoms of... |
Metals and nonmetals |
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Energy is needed... |
To remove electrons from metal ions |
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Energy is released... |
When most nonmetal atoms gain electrons |
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-ide is added to the end of an ion name. What do we know about that ion? |
It has a negative charge |
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What is formed when atoms share one or more pairs of electrons? |
Covalent bond |
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Molecule |
Consists of two or more atoms joined in a definite ratio |
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What is formed by the attraction between positively-charged metal ions and the electrons in the metal? |
Metallic bond |
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Why can metals bend without breaking? |
Metals contain constantly moving electrons |
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What is a model used to show the valence electrons of an atom? |
Electron-Dot Diagram |
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What is a bond formed by the attraction between positively charged metal ions and the electrons around them? |
Metallic bond |
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What charge do covalent bonds have? |
Neutral |
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What are molecules that have two of the same atoms called? |
Diatomic Molecules |
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How is NaCl made? |
Na wants to give its one valence electron away to become Na+. Cl wants one more valence elctron to become Cl-1, so they interact. |
