chemistry
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Michael L. Bishop, Edward P. Fody, Carleen Van Siclen • ISBN 9781284238860
Karen C. Timberlake • ISBN 9780134421353
Carl A. Burtis, David E. Bruns • ISBN 9781455741656
Julia Burdge • ISBN 9781260565850
Latest notes & summaries chemistry
Experiment 7: We examined 3 different types of polymerization 
1. Condensation (interfacial polymerization) 
2. Chain Addition 
3. Cross-linked 
what did each accomplish? - Answer 1. Nylon-10,6 is made from sebacoyl chloride and 
hexamethylene diamine 
2. Polystyrene is made from chain additon of styrene and the initiator as benzoyl peroxide which 
generates radicals with heat, these radicals react with the styrene to begin chain addition 
Experiment 7: Chain addition vs Condensation Polymerizat...
4 States of Matter - Answer solid, liquid, gas, plasma 
Physical Property - Answer a characteristic based on observations or measurements 
Chemical Property - Answer a characteristic based on how a substance interacts/reacts 
with another substance 
Definition: Melting Point - Answer temperature when a substance changes from a solid to 
a liquid 
Physical or Chemical: Melting Point - Answer physical property 
Definition: Boiling Point - Answer temperature when a substance changes from a liquid t...
acid rain - Answer Rain that has a non-metal dissolved in it. 
chemical property - Answer How a substance behaves in its chemical reactions. 
density - Answer The mass of a material in a certain volume. 
displace - Answer A more reactive metal displaces - or pushes out - a less reactive metal 
from its compound. 
displacement reaction - Answer In a displacement reaction, a more reactive metal 
displaces - or pushes out - a less reactive metal from its compound...
Element - Answer A pure substance made of only one kind of atom, cannot be broken 
down 
Compound - Answer A substance made of two or more elements that are chemically 
joined in a specific combination. 
Molecule - Answer Two or more atoms that are held together by chemical bonds and act 
as a unit. 
Organic compound - Answer Chemical compound that contains carbon atoms usually 
bonded to at least one hydrogen atom. 
Chemical formula - Answer A group of chemical symbols and numbers that represen...
What determines which energy gets absorbed? - Answer Chemical structure 
Louise de Broglie proposed that electrons had what properties? What experiment lead to this 
discovery? - Answer both wave and partical / the double slit experiment 
What is it called when electron waves collapses on itself? - Answer destructive 
interference 
What does the Heisenberg Uncertainty Principle state? - Answer it is imposible to know 
the exact momentum and position of an electron 
What describes the electrons l...
What appearance of an acidic analyte solution containing phenolphthalein indicates the endpoint 
of titration with a basic solution? 
Select one: 
A burst of pink color that darkens upon stirring. 
A persistent dark pink color throughout the solution. 
A burst of pink color that disappears upon stirring. 
A persistent pale pink color throughout the solution. - Answer a persistent pale pink color 
throughout the solution 
An indicator is a substance added to a sample that has (a visible, a physic...
In what phase are most elements found? - Answer Solid 
Examples of substances composed of only one element - Answer Iron nail (Fe) and 
Aluminum foil (Al) 
Elements found in sugar - Answer Carbon, hydrogen, oxygen 
Elements found in brass - Answer Copper and Zinc 
Element - Answer A simple substance that cannot be broken down into other substances 
How many known elements are there? - Answer 118 known elements 
Mercury - Answer An element that is a silver-colored liquid 
An element that is an in...
Pure Substance - Answer Matter with a fixed composition and made up of identical 
particles. 
Homogeneous Solution - Answer Made up of a uniform composition. 
Heterogeneous Mixture - Answer Non-uniform solution/mixture. 
Filtration - Answer Separation of solid and liquid solutions. 
Chromatography - Answer Separation of liquid-liquid solutions using their differences in 
polarity. 
Distillation - Answer Separation of liquid-liquid solutions based on differences in boiling 
points. 
Physical Chan...
Proton - Answer A subatomic particle that has a positive charge and that is found in the 
nucleus of an atom 
Neutron - Answer A subatomic particle that has no charge and that is found in the nucleus 
of an atom 
Electron - Answer A subatomic particle that has a negative charge and is found outside the 
nucleus in the electron cloud. 
Nucleus - Answer Center of an atom 
electron cloud - Answer area around the nucleus of an atom where the atom's electrons are 
most likely to be found 
energy lev...
AQA 2023 A-level CHEMISTRY 7405/3 Paper 3 Question Paper + Mark scheme [MERGED] June 2023 Materials 
For this paper you must have: 
 the Periodic Table/Data Booklet, provided as an insert (enclosed) 
 a ruler with millimetre measurements 
 a scientific calculator, which you are expected to use where appropriate. 
Instructions 
 Use black ink or black ball-point pen. 
 Fill in the boxes at the top of this page. 
 Answer all questions. 
 You must answer the questions in the sp...