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24 Cards in this Set
- Front
- Back
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How many valance electrons do atoms need to be stable? |
8 |
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What makes an atom more reactive? |
When it’s closer to having a full outer shell (8 valance electrons) |
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What are the three properties of ionic bonds? |
High conductivity Metals and nonmetals Atoms lose or gain electrons |
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What kind of conductivity do ionic bonds have? |
High conductivity |
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What combination of metals/nonmetals are in ionic bonds? |
they’re made out of metals and nonmetals |
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What type of bond makes atoms lose or gain electrons? |
Ionic bonds |
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What are the three properties of covalent bonds? |
Los conductivity Nonmetals and nonmetals Electrons are shared |
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What kind of conductivity do covalent bonds have? |
Low conductivity |
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What combination of metals/nonmetals make up covalent bonds? |
Nonmetals with nonmetals |
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How do covalent bonds form? |
Electrons are shared |
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What are the three examples of physical changes? |
Change in matter Dissolving of a solid into a liquid or making/separating a mixture Changing he size or shape of matter |
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What are the four indications of a chemical change? |
Color change Gas formation Temperature change Precipitate production (a solid being created form two liquids) |
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What’s the law of conservation of mass? |
Matter cannot be created not destroyed |
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What does the conservation of mass tell us about chemical equations? |
The reactants and products must have the same number of each element |
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What do acids create when dissolved in water? |
H3O+ (hydronium ion) |
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What element is at the begging of every acid? |
H (hydrogen) |
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What are the properties of acids? |
taste sour Conduct electricity (electrolytes) Corrode metal Found in citrus fruits, tomatoes, and vinegar |
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What cna the pH levels of acids be? |
1-6 |
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What can the pH levels of bases be? |
8-14 |
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What are the properties of bases? |
Taste bitter Feel slippery Conduct electricity (electrolytes) Corrode metal Found in household cleaning supplies |
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What are the products of a neutralization? |
Water and salt |
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What are endothermic/exothermic reactions? |
When bonds are broken and reformed |
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What is absorbed to break bonds? |
Thermal energy |
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What is released when bonds are created? |
Thermal energy |
