Avogadros constant - Study guides, Revision notes & Summaries

A level chemistry paper 2 questions and answers latest top score. Silver nitrate+ nitric acid + chloride ions - ANS.White precipitate Silver nitrate+ nitric acid + bromide ions - ANS.Cream precipitate Silver nitrate+ nitric acid + iodide ions - ANS.Yellow precipitate Substances that decolorise bromine water - ANS.Alkenes Electrophiles - ANS.Electron pair acceptors, attracted to electrons e.g H+ NaF and NaCl - ANS.Produces misty fumes wi...

Silver nitrate+ nitric acid + chloride ions - Ans .White precipitate Silver nitrate+ nitric acid + bromide ions - Ans .Cream precipitate Silver nitrate+ nitric acid + iodide ions - Ans .Yellow precipitate Substances that decolorise bromine water - Ans .Alkenes Electrophiles - Ans .Electron pair acceptors, attracted to electrons e.g H+ NaF and NaCl - Ans .Produces misty fumes with conc sulphuric acid NaBr - Ans .Produces misty and orange/brown fumes with conc sulphuric acid NaI - A...

Learn all about calculations involving masses with this presentation! Includes mass, moles, concentration, atom economy, percentage yield and Avogadro's constant. Includes some practise questions to test your learning!

A-Level Edexcel Mathematics Pure Maths Paper 1 2023 (Summer 2023) How do you make tertiary chloroalkanes? - ANS-Tertiary alcohol + concentrated HCl How do you make bromoalkanes? - ANS-Alcohols + HBr or PBr3 What compound is used to oxidise alcohols? - ANS-Acidified potassium dichromate (can be used to distinguish between types of alcohols) What does a primary alcohol oxidise to? - ANS-first: aldehyde second: carboxylic acid What does a secondary alcohol oxidise to? - ANS-Ketone Why ...

A-Level Edexcel Mathematics Pure Maths Paper 1 2023 (Summer 2023) How do you make tertiary chloroalkanes? - ANS-Tertiary alcohol + concentrated HCl How do you make bromoalkanes? - ANS-Alcohols + HBr or PBr3 What compound is used to oxidise alcohols? - ANS-Acidified potassium dichromate (can be used to distinguish between types of alcohols) What does a primary alcohol oxidise to? - ANS-first: aldehyde second: carboxylic acid What does a secondary alcohol oxidise to? - ANS-Ketone Why ...

Mass number - ANSWERS Total number of protons and neutrons. Atomic number - ANSWERS Numbers of protons in the nucleus and number of electrons in shells. Negative Ions - ANSWERS More electrons than protons. Positive ions - ANSWERS More protons than electrons. Relative isotopic mass - ANSWERS mass of an atom of an isotope of an element on a scale where an atom of carbon12 is 12. Relative atomic mass - ANSWERS average mass of an atom of an element on a scale where an atom of carbon12 is ...

General Chemistry ACS Final Exam 89 Questions with Verified Answers Protons - CORRECT ANSWER defines the element; positive charge; equal to the atomic number Neutrons - CORRECT ANSWER equal to mass number-number of protons; neutral charge Electrons - CORRECT ANSWER negative charge; dependent on the charge of the atom Cations - CORRECT ANSWER Positively charged ions Anions - CORRECT ANSWER Negatively charged ions Isotopes - CORRECT ANSWER when the number of neutrons varies but i...

What is the charge of a proton? - ANSWERS +1 What is the charge of a neutron? - ANSWERS 0 What is the charge of an electron? - ANSWERS -1 What is the mass of a proton? - ANSWERS 1 What is the mass of a neutron? - ANSWERS 1 What is the mass of an electron? - ANSWERS 1/1800 What is an isotope? - ANSWERS Isotopes of an element are atoms with the same number of protons but different numbers of neutrons. Why do isotopes of an element all have the same chemical properties? - ANSWERS This is...

Chemistry AQA AS Questions 100% Correct Answers Mass number -ANSWER Total number of protons and neutrons. Atomic number -ANSWER Numbers of protons in the nucleus and number of electrons in shells. Negative Ions -ANSWER More electrons than protons. Positive ions -ANSWER More protons than electrons. Relative isotopic mass -ANSWER mass of an atom of an isotope of an element on a scale where an atom of carbon12 is 12. Relative atomic mas...

atomic # - number of protons mass # - number of protons and neutrons isotopes - atoms with the same atomic number but different mass numbers cation - a positively charged ion anion - a negatively charged ion periods - horizontal rows of the periodic table groups (families) - vertical columns of the periodic table avogadros # - 6.022×10²³ molecular weight (molar mass) - the mass in grams of one mole of a compound theoretical yield - maxi...