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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are the 3 different kinds of radioactive decay? |
Alpha, beta, gamma |
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What is a radioactive half-life? |
When half of the radioactive isotopes have decayed |
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What are the 3 main types of chemical bonds? Describe them? |
Metallic- 2 metals Covalent- 2 nonmetals Ionic- 1 nonmetal, 1metal |
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How are ionic and covalent bonds different? |
Ionic bonds give electrons, covalent bonds share electrons |
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Why do atoms bond? |
They want to have an octet of valence electrons |
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What is an ion? |
An atom/molecule with a net electric charge due to the loss/gain of one or more electrons |
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How does an electric charge change when it loses an electron? |
Positive charge |
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How does an electric charge change when it gains an electron |
Negative charge |
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What are reactants, products, and coefficients? |
Reactants are the substances that react, products are the substances produced, coefficients are the multipliers |
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How do you balance a chemical equation? |
Start with the equation, count the atoms, add the coefficients, reduce the coefficants if possible |
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What happens in a combination reaction vs decomposition reaction |
In a combination reaction 2 or more substances combine, in a decomposition reaction 1 substance breaks into 2 or more substances |
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What happens in a single replacement reaction vs a double replacement reaction? |
In a single replacement reaction one element replaces another, in a double replacement reaction 2 ionic compounds are combined |
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What are the ways that you can speed up/ slow down a chemical reaction? |
Temperature Concentration Surface area Catalyst/inhibitor |
There are 4 |
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What is the definition of an acid? |
A substance that forms hydrogen ions in water |
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What is the definition of a base? |
A substance that accepts hydrogen ions from acids |
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List 3 examples of pure chemical substances |
Sulfuric Nitric Hydrolic |
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List 3 examples of pure chemical bases |
Sodium chloride Potassium hydroxide Magnesium hydroxide |
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List 3 examples of of pure chemical salts |
Chloride Sodium chloride Sodium carbonate |
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What happens in s neutralization reaction? |
The pH gets closer to 7 |
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What is the definition of pH? What does the scale range from? |
A measurement of hydrogen ion concentration, 1-14 |
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Explain the difference between a strong acid and a couple contrated acid |
Strong acid - 100% dissociation Concentrated acid - mostly acid, little water |
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