Ib chemistr - Study guides, Class notes & Summaries

exothermic reaction - Ans a chemical reaction in which heat is released to the surroundings heat - Ans Measure of total energy in a substance will depend on the amount. Always transfers or flows from a region of higher temperature to a region of lower temperature temperature - Ans the measurement of kinetic energy standard enthalpy of combustion - Ans the enthalpy change when one moles of substance is burned in excess oxygen under standard conditions

IB Chemistry Unit 2 SL Latest Version Graded A+ Emission spectrum ️️An emission spectrum is produced when an atom moves from a higher to a lower level. The line emission spectrum of hydrogen provides evidence for __________________ which converge at _____________ ️️The line emission spectrum of hydrogen provides evidence for the existence of electrons in discrete energy levels which converge at higher energies. Continuous spectrum ️️All the colours / wavelengths present ...

IB Chemistry SL Questions And Answers 100% Verified element ️️a substance that cannot be broken down into simpler substances. atom ️️smallest part of an element. compound ️️substance that contains more than one element. empirical formula ️️this shows the simplest whole number ratio of atoms of each element in a particle of the substance. molecular formula ️️shows the actual number of atoms of each element in a molecule of the substance. structural formula ️️th...

Ib chemistry HL lates version graded A+ exothermic reaction ️️heat is released by the system ΔΗ<0 endothermic reaction ️️heat is absorbed by the system ΔΗ>0 standard enthalpy change of reaction(ΔΗ) ️️the heat energy transferred under standard conditions (pressure-101.3 kPa, temperature- 298 K) combustion and neutralization are exothermic processes ️️ average bond enthalpy ️️the energy required to break one mole of a certain type of bond in the gaseou...

IB Chemistry Topic 5 latest update graded A+ Enthalpy ️️The amount of heat released (exothermic) or absorbed (endothermic) during a chemical reaction (the energy needed for the reaction to occur) This can be lowered with the presence of a catalyst. Change in Enthalpy ️️Hproducts -Hreactants Specific heat equation ️️c= q in Joules (or Change in H)/mass(g)(change in temp) Specific heat of water ️️4.18 J/gdegreesC **NOTE: Usually in kJ Endothermic v. Exothermic ️️End...

IB Chemistry - Functional Groups 100% Correct alkane ️️ alkene (alkenyl) ️️ alkyne (alkynyl) ️️ halogenoalkane ️️ alcohol (hydroxy) ️️ ketone ️️ ether ️️ aldehyde ️️ amine ️️ carboxamide ️️ carboxylic acid ️

IB Chemistry: Stoichiometry Questions And Answers Rated 100% mole ️️the amount of a substance which contains the same number of chemical species as there are atoms in exactly 12 grams of the isotope carbon-12 relative atomic mass ️️the average mass of the atoms of an element relative to 1/12 the mass of an atom of carbon-12 Avogadro's constant ️️the number of particles in one mole of a substance; equal to 6.02 x 10^23 empirical formula ️️shows the simplest ratio of th...

Ib Chemistry: Cumulative Final exam questions with complete solutions R-H ️️Alkane R-OH ️️Alcohol R-NH2 ️️Amine R-X (X = F, Cl, Br, I) ️️Halogenalkane O=R-C-H ️️Aldehyde O=R-C-R' ️️Ketone O=R-C-OH ️️Carboxylic acid O=R-C-OR' ️️Ester

VSEPR IB Chemistry, Questions and answers, 100% Accurate. Rated A+ What are the purpose of lewis structures? - To describe bonding between polyatomic molecules What is the central idea in which lewis structures are built upon? - The most stable arrangement of electrons is where all atoms have nobel gas configurations, a full octet What are resonance structures? - When molecules can have multiple lewis structures. The electrons are delocalized and the bond strength is an average of all...

IB Chemistry SL Functional Groups 100% Correct Alkanes ️️Functional Group: none Suffix: -ane Formula: C(n)H(2n+2) Alkenes ️️Functional Group: alkenyl Suffix: -ene Formula: C(n)H(2n) Alkynes ️️Functional Group: alkynyl Suffix: -yne Formula: C(n)H(2n-2) halogenoalkanes ️️Functional Group: —X ( X= F, Br, Cl, I) Suffix: none Formula: C(n)H(2n+1)X arenes ️️Functional Group: phenyl Suffix: none Formula: C(n)H(2n-6) alcohols ️️Functional Group: hydroxyl Suffi...