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14 Cards in this Set
- Front
- Back
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Explain how an ionic bond is formed |
Ionic bonds are formed when one or more valence electrons are transferred between two atoms. |
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Define an ion and give an example |
An ion is an atom or group of atoms that has a positive or negative charge Ex: Na+ |
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List five general types of chemical reactions and write the general equation for each |
Synthesis: A+B》AB Decomposition: AB》A+B Single Replacement: A+BC》B+ABC Double Replacement: AB+CD》AD+CB Combustion: CxHy+O2》CO2+H2O |
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Define chemical energy |
Chemical energy is the energy stored is chemical bonds of a substance |
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Define reaction rate |
The reaction rate us the speed at which reactions change into products over time |
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What is the law of conservation of mass? |
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction. |
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Explain how a covalent bond is formed |
A covalent bond is formed when atoms share pairs of valence electrons |
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Explain what happens to chemical bonds and energy during a chemical reaction |
During a chemical reaction, chemical bonds of the reactions are broken down, requiring energy, chemical bonds of the products are formed |
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Define a product |
Products are new substances formed as a result of a chemical reaction |
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Define a reactant |
A reactant is a substance that undergoes change in a chemical reaction |
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What is the law of conservation of energy? |
The law of conservation of energy states that energy can neither be created nor destroyed. |
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Define a catalyst |
A catalyst is a substance that affects the rate of a chemical reaction without being used up in the reaction. |
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Explain why some atoms react to form chemical bonds |
Some atoms react to form chemical bonds to gain a more stable electron configuration like noble gases |
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Explain how a metallic bond is formed |
A metallic bond is formed when metal atoms become cations and share a pool of freely moving valence electrons between their nuclei |
