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Chemistry chapter 6
| Question | Answer |
|---|---|
| Dobereiner's classification system of the Elements | Triads based on shared properties |
| Mendeleev's Classification of the Elements | Increasing atomic mass |
| Mosely's Classification of the elements | Increasing atomic number |
| Which of the three classifications that we have learned is the modern periodic table | Moseley's |
| Three parts of the periodic law | - Elements in a period have different properties as you move left to right. - Elements in a group have similar properties - Periodic repetition of physical and chemical properties when elements are arranged in order of increasing atomic number |
| What are the three broad classes of Elements | Metals. Nonmetals, and Metalloids |
| List the Properties of Metals. | - Good conductor of heat and electricity - HIgh Luster - Solid at room temp - Ductile (stretched into wires) - Malleable (hammered into thin sheets w/o breaking) |
| List Properties of Nonmetals | - Varying physical properties - Most are gases at room temp - Poor conductors of heat/electricity (except carbon) - Brittle |
| List Properties of Metalloids | - Located between metals and metalloids - similar properties to both, so they can behave like either at any time. |
| What Elements are in group 1A? | Alkalai Metals |
| What elements are in Group 2A? | Alkaline Earth Metals |
| What elements are in Group 7A | Halogens |
| What elements are in Group 8A | Noble Gases |
| Elements that are in Groups 1A-8A | Representative Elements |
| Elements that are in groups 1B-8B | Transition Elements |
| What are the two main groups of Elements | Representative elements and Transition elements |
| Where are the Inner transition metals found | Groups 3-11 |
| what is the difference between a Cation and an Anion | cations have a positive charge and are smaller in size, where Anions have a negative charge and are larger |
| What is the Measurement of the Atomic radius | It is half the distance between the Nuclei of two joint atoms of the same element |
| Energy required to remove an electron from an atom | Ionization energy |
| What is the charge of a nucleus | Positive |
| Ability of an atom to atract electrons when the atom is in a compound | Electronegativity |
| tendancy of electrons in outer orbitals to be blocked from the attraction of the protons in the nucleus | Shielding |
| List the Classifications of the elements of the Periodic table | Alkalai metals, ALkaline Earth Metals, Transition metals, Actinide series, Lanthanide series, noble gases, post transition metals, Other nonmetals, and halogens |
| What are the four groups elements can be sorted into based ont heir electron configuration? | Representative metals, Transition Metals, Inner transition metals, and Noble Gases |
| When do Ions form | When an atom loses or gains electrons |
| In General, how are elements organized | By their properties |
Created by:
Segway
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