Hydroxides - Study guides, Class notes & Summaries

Ionisation energy trend in Group 2 - Ans .As you go down the group first ionisation energy decreases because: - Although nuclear charge is increasing - The electrons have an extra quantum shell of shielding making them easier to remove - They exist in a higher energy orbital (and/ or a further distance from the nucleus) Reactivity trend in group 2 - Ans .Group 2 elements become more reactive going down a group as the outer two electrons are easier to remove because they have lower first ...

naturally occurring inorganic crystalline solid characteristic chemical composition predictable physical properties - correct answermineral native elements sulfides halides oxides/hydroxides sulfates carbonates silicates - correct answerBerzelian Classification nesosilicates - correct answerSiO4 sorosilicates - correct answerSi2O7 cyclosilicates - correct answerSi6O18 Si3O9 Si4O12 single chain in

Electron configuration for cations - CORRECT ANSWER Subtract 1 from expo-nent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions - CORRECT ANSWER Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals - CORRECT ANSWER s, p, d, f Primary vs secondary structures of proteins - CORRECT ANSWER Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha he...

Electron configuration for cations - Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions - Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals - s, p, d, f Primary vs secondary structures of proteins - Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) Most bonds in organic compounds are - covalent Properties of...

Certified Pool Operator Test Review Questions with Verified Answers 12 Reasons why the health inspector will close your pool 1. pump filter not working for more than an hour 2. main drain is not visible 3. chemical readings out of range 4. no pool operator (15 minute grace period) 5. no lifeguard or cpr certs present 6. water is below the skimmer line 7. danger to the public 8. chlorinator is not working 9. health inspector is not allowed in 10. bathrooms + drains not working 11. ...

Nonelectrolytes - Dissolves, does not dissociate H2O C12H22O11 C6H12O6 CH3OH strong electrolytes - NaCl Ca(OH)2 NH4 All ionics weak electrolytes - NaC2H3O2 --> Na+ + C2H3O2- HC2H3O2--> H+ + CH2COOH- Solution temperature - The higher the temperature, the more the substance will disolve Solution Pressure - DON'T KNOW Ion charge-to-size-ratio - large ion with low charge is less soluble Weak Acids - ALL OTHERS Weak Bases - NH3, C5H5N, others with N Strong Acids - HC...

Electron configuration for cations - CORRECT ANSWER Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions - CORRECT ANSWER Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals - CORRECT ANSWER s, p, d, f Primary vs secondary structures of proteins - CORRECT ANSWER Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) M...

What is biodiesel correct answer: a fuel comprising long-chain fatty acid methyl esters (FAMEs) derived from vegetable oils or animal fats, designated B100 and meeting standard requirements. What methods can be used to make fatty acid methyl esters (FAME's)? correct answer: -Base-catalyzed transesterification -Acid-catalyzed esterification -Saponification of the oil to yield free fatty acids, followed by acid catalyzed esterification What are fatty acids? correct answer: carboxylic ...

International Certified Crop Adviser Study Guide Exam Soil Minerals - CORRECT ANSWER-Clays, carbonates, hydroxides Mineralization - CORRECT ANSWER-Organic material decomposed into nutrients in a inorganic from Immobilization - CORRECT ANSWER-nutrients converted into biomass become 'tiedup' and are unavailable for nutrient cycling Uptake antagonism between ions - CORRECT ANSWER-Two or more ions may compete for plant uptake by various mechanisms. One ion is said to be antagonistic w...

1. Describe the trend in ionisation energy down group 2. - Ans .There is an extra electron shell compared to the one above, extra inner shells shield the outer electrons from the attraction of the nucleus. The extra shells means the outer electrons are further away from the nucleus. 2. Group 2 react with water to produce? - Ans .Hydroxides. M(OH)2 3. Group 2 burn in oxygen to form? - Ans .Oxides MO 4. Group 2 react with chlorine to form? - Ans .Chlorides, MCl2 5. Explain the trend in rea...