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chem.Stack #201959
| Question | Answer |
|---|---|
| what's the amu for a proton? | 1.0073 |
| whats the amu for a neutron? | 1.0087 |
| what's the amu for an electron? | .00055 |
| where can a proton be found in an atom? | nucleus |
| where can a neutron be found in an atom? | nucleus |
| where is an electron found in an atom? | outside the nucleus |
| 1836 electrons = ____protons | 1 |
| lighting storm would be an example of ____ and _____ clashing | protons and electrons |
| metals are a ___ charge | postitive |
| nonmetals are a _____ charge | negative |
| cations are ____ charged like metals | positve |
| anions are ____ charged like non metals | negative |
| metals conduct _____ and ______ | electricity and heat |
| what has a shinny appearance, luster. ductile ( can take large pieces and make smaller) | metal |
| metals or non-metals are good insulators? | non metals |
| which metal is a liquid at room-temp? | Hg |
| which non-metal is liquid at room-temp? | Br |
| which element wants to be a non-metal and a metal? | Hydrogen |
| Group 1A are _______ metals, are base elements with high pH | alkali |
| group 2A are________ metals, are base elements with high pH | alkaline |
| Group A is called the _______ group elements | Main group |
| group 1A has ___ electrons, 2A?, 3A?, 4A?, 5A?, 6A?,7A? | 1,2,3,4,5,6,7 |
| group 7A is the____ group. Also called the _____ formers. | Halogen group, salt formers |
| Group 8A is called the _____ group. | gas |
| what's the oct 8 rule? | there can not be no more atoms that 8 on the outside of the atom. |
| hat do all the elemets want to be like? | nobel gases |
| what are the 7 diatomic elements? | N, O, F, Cl, Br and H they make a 7 on the chart |
| out of N, O, F, Cl, Br, H which does not belong and why? | Br bc its a liqiud |
| what's an example of a diatomic element? | H(2) |
| what's an example of a monatomic element? | Cl |
| what are the Calcogens? what elements do they contain? | Group 6A the oxygen family. oxygen and sulfer, bc copper is made mostly of these two elements |
| what are the inner transistion elements? | Lanthanides and Actinides |
| what metal is liquid? | Mercury |
| chemical reaction occurs bc of the _____ in the atom | electrons |
| when an atom losses an electron it becomes ______ charged | positively |
| when a n atom gains an electron gains an electron is becomes _____ charged | negatively |
| first ionization energy (IE) or the ionization Potential (IP) is the ? | minimum amount of energy that it takes to gain or lose an electron |
| _______ ________ of an element is the amount of energy absorbed when the electron i s added to form an anion with a negative charge | Electron affinity |
| ____ is the friendliest of all the metals | Iron |
| ______ desolves other metals to form alloys | Mercury |
| what do dentist use to fill cavities? | Hg and Ag |
| qiuck silver= _____, has the lowest melting point, and dissolves gold | Hg |
| ______ is the softest metal | Cesium |
| ______ is the best conductor of heat | silver |
| _______ is most Malleable and ductile | Au |
| what's the lightest metal? | lithium |
| nobel and cinage metals are? | Ag, Au, C |
| synthetic elements are or are not found in nature? | are not |
| atomic number = the number of ------ and ------ | protons and electrons |
| in the Quantum Theory ----- is most massive and ----- is least massive. what moves is a form of a wave? | neutrons, electrons, electrons |
| what's avagadro's number? | 6.022x10(-) 23 |
| how do you find % contribution of an element? | find the molar mass of the elements, take each element, divide it by the molar mass,& multiply it by 100 |
| how would yo find .05 mols of H2SO4 (molar mass= 98.1g) | divide molar mass by .05 mols |
Created by:
devildollcarver