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chemistry
| Question | Answer |
|---|---|
| properties of metals | Crystal structure conduct electricity and heat malleable and ductile high melting points |
| properties of covalent | intramolecular strong, intermolecular weak |
| properties of ionic compound | high melting points and high boiling point hard and rigid and brittle and crystal solids dont conduct elec molten liquid and aqueous solutions do conduct elec electrolytes -ionic ting that conducts elec |
| if someting is linear it has only what angle beta | it has a 180 or just a striaght line gangstar |
| to find out how many elements an element can bond with | you check how many more elctrons it needs to reach a stable octet |
| HOw do you know if a compound is a tetrahedral | if it has no lone pairs ,4 elements on the main thing |
| why is bornon difernent | it only need 6 valence electrons |
| How do you find out how many lone pairs something has you take the valence electrons of | you take the valence electrons of the central atom and you subtract the amount of bonds you have if you have some left that means lone pairs |
| if you got a question saying you have like 2-6 which one whould it bond with you whould | usually pick 2-8 if thats an option if not go for the one with the most valence electrons |
| if theres a question like +1 or -1 what do you do | look at the mc adn see which one has the protons that wil add to eaqual the amount of protons its asking for |
| if it asks whats the atomic number of a compound what do you do use OH- as an example | you add the proton numbers so O has 8 and H has 1 so atomic number of 9 CHARGE DONT DO NUTIN |
| What solid has a very high melting point but is a poor conductor? | Network covalent solid |
| how do you know what bond is the least polar | polarity depends on electronegativity difference the smaller the dif the less polar it is |
| In a bond, which atom attracts electrons more? | The one with higher electronegativity |
| which group 18 element is most likely to form a compound with flourine | always krypton and up |
| which element can bond with radon | usually flourine cs high in elctronegativity |
| What type of solid conducts electricity when melted? | Ionic solid |
| What type of solid is soft and does NOT conduct electricity? | Molecular solid |
| What type of solid has a “sea of electrons”? | Metallic solid |
| What type of solid has a VERY high melting point and is very hard? | Network covalent solid |
| If a solid conducts electricity as a solid, what type is it? | Metallic |
| Why do ionic solids have high melting points? | Strong attractions between positive and negative ions |
| Why do molecular solids have low melting points? | Weak intermolecular forces |
| Which solid type has the weakest forces between particles? | Molecular solids |
| how do you know if a covalent molecule is polar or non polar | if symmetrical its non polar if asymmetrical its a polar molecule |
| how to tell the dif with LDF, hydrogen bonds and dipole dipole | if its non polar its always LDF,if its polar its gonna be dipole dipole unless in that compound hydrogen is bonded with FON then it would be Hydrogen bonding |
| when it asks if a bond is polar but theres a lot of elements what to do | alll of them need to be non polar for it to be non polar once theres one its polar |
| Linear | if its littely 2 things its always linear their can be 3 carefull when theirs no lone pairs its linear |
| Bent | bent is only when their are 3 things and their are lone pairs |
| Trigonal planer | trigonal planer is when their are 3 things connected to a central atom but their is no lone pairs |
| trigonal pyramidal | trigonal pyramidal is when their are 3 things connected to a central atom but their are lone pairs |
| tetrahydral | when their are 4 things all conected to the central atom so their are no lone pairs |
| the larger the molecule the higher the | boiling point |
| the stronget the hydrogen bond the more | cohesive stickier to surroundings |
| how do you know how ionic something is | the one with the largest electronegativity |
| when it asks like which one is the lowest thing for water and it gives you ml and temp | ML doesnt mater only temp |
| what is the vapor pressure for liquid at its normal boiling temp | 101.3 |
| when it asks for strongest inter molecular forces and gives u vapor presure its the ___ | highest temp |