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Description
Flashcards by maddyaddyo, updated more than 1 year ago
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Created by maddyaddyo
over 9 years ago
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| Question | Answer |
| Quantitate Information | info that a. can be measured b. usually includes numbers |
| Qualitative Information | information that is a. descriptive b. does not include numbers |
| Atoms | basic unit of matter |
| Elements | consist of only one type of atom |
| Nucleus | holds protons/neutrons |
| Proton | positive located in the nucleus |
| Neutron | no charge, Neutral |
| Electron | negatively charged, located outside the nucleus |
| Energy Levels | 1st level - holds 2 2nd level - holds 8 3rd level - holds 8 |
| Valence Electrons | The electrons in the outermost energy level |
| Atomic Number | - the identity of an element - the number of protons equals the atomic number - number of protons is also equal to the number of electrons |
| Atomic Mass (AKA: Mass Number) | number of protons plus the number of neutrons |
| Bonding | Goal: to get the outer energy level filled |
| Ionic Bond | A transfer of electrons |
| Ions | atoms wit an excessive positive or negative charge |
| Covalent Bond | Sharing of electrons |
| Hydrogen Bond | Occurs between two - NOT within them Occurs between hydrogen and some other type of atom Weaker then ionic and covalent bonds |
| What happens when atoms bond? | Molecules are formed |
| Molecular Formula | Letters and Numbers (H2O, CO2) |
| Structural Formula | shows the arrangment of atoms |
| What is the job of pH? | tells you how acidic/basic a sollution |
| What is a buffer? | Chemical that minimizes the change in pH |
| What is measured when you're measuring pH? | The amount of hydrogen ions |
| What happens when Hydrogen Ions increase when measuring pH? | pH goes down |
| What happens when number of hydrogen ions decreases when measuring pH? | pH goes up |
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