Avogadro Study guides, Class notes & Summaries
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BMAT – Chemistry Final Exam Questions and 100% Correct Answers
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what happens to the solubility of gases as pressure increases? increases 
what happens to the solubility of gases as temperature increases? decreases 
how is the chromatography retardation factor calculated? distance moved by compound/distance moved by solvent 
how is the relative atomic mass of an element calculated? (mass1 x abundance1) + (mass2 x abundance2)/ 100 
what are the elements in group 1 referred to as? alkali metals 
what are the elements in group 7 referred to as? halogens 
what ar...
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CURRENT EVENT BIOLOGY TEST-72 QUESTIONS AND ANSWERS
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compare and contrast kidney and liver transplants 
the liver donor would be dead and the kidney would be alive but both transplants are possible 
 
 
 
What makes the pollination of Cacao trees so difficult? 
The petals curve around the male part making it hard for anything to pollinate it 
 
 
 
What is MRSA? 
methicillin-resistant staphylococcus aureus 
 
 
 
What is the structure and function of bioflim? 
Colonies of microbes enveloped in a protecting slime that shields them from antibiotics....
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Student Exploration: Moles
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Student Exploration: Moles 
 
 
Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified atomic mass unit 
 
 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
 
1.	In the image to the right, note a dozen eggs, a dozen donuts and 
a dozen roses. How many of each item do you have?	12 
2.	Would a dozen of each object have the same mass?	no 
 
 
3.	Suppose you have a dozen ca...
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GIZMO Moles, Avogadro, and Molar Mass
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Exam (elaborations) GIZMO Moles, Avogadro, and Molar Mass 
Activity: Moles, Avogadro, and Molar Mass 
Prior Knowledge Questions 
1. In the image, note a dozen eggs, a dozen donuts and a dozen 
roses. How many of each item do you have? 12 eggs, 12 
donuts, and 12 roses. 
2. Would a dozen of each object have the same mass? No 
3. Suppose you have a dozen silver atoms, a dozen oxygen atoms, and a dozen lithium atoms. 
Even though you have the same number of each, will they all have the same mass? ...
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Alek’s latest update with complete and verified solutions
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Alek’s latest update with complete and verified solutions 
electron (symbol, charge, mass, location) e-, -1, .000549 amu or 1/1800 amu, orbiting around nucleus 
proton (symbol, charge, mass, location) p+, +1, 1.0 amu, nucleus 
Neutron (symbol, charge, mass) N0, 0, 1.0 amu 
ecide which element probably has a density most and least similar to the density of rubidium. options are fluorine, cesium, thallium, & indium. Metals are more similar to each other than they are to nonmetals. Likewise, nonm...
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AQA A Level Chemistry Definitions questions and answers latest top score.
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AQA A Level Chemistry Definitions questions and answers latest top score. 
 
 
 
 
 
 
 
 
 
 
 
 
Relative Atomic Mass - ANS.The weighted mean mass of an atom of an element relative to 1/12 of the mass of one atom of carbon-12 
 
First Ionisation energy - ANS.The energy required to remove an electron from each atom in one mole of gaseous atoms 
 
Acid - ANS.A species that is a proton donor 
 
Activation Energy - ANS.The minimum energy required to start a reaction by the brea...
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Student Exploration: Moles GIZMO ( ALL ANSWERS CORRECT ) UPDATED 20222023
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Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified atomic mass unit Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. In the image to the right, note a dozen eggs, a dozen donuts and a dozen roses. How many of each item do you have? 2. Would a dozen of each object have the same mass? 3. Suppose you have a dozen carbon atoms, a dozen gold a...
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AQA A-Level Chemistry - Amount of Substance
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AQA A-Level Chemistry - Amount of Substance 
Relative Atomic Mass 
The average mass of an atom of an element, compared to that of the mass 
of 1/12th of the average mass of an atom of carbon-12 
Relative Molecular Mass 
one atom of carbon-12 
Avogadro Constant 
The average mass of one molecule compared to 1/12th of the mass of 
The number of particles in one mole of an atom: 6.022 x 10^23 
Solvent 
Solute 
Solution 
A liquid that can have a substance dissolved into it 
A...
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AQA A-Level Chemistry Paper 1 – Inorganic and Physical Chemistry Predicted Paper 2023 with marking scheme attached.
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AQA A-Level Chemistry 
Paper 1 – Inorganic and Physical Chemistry Predicted Paper 2023 with marking scheme attached. 
 
Name …………………………………………………………………… 
Date ………………… 
 
 
2 hours allowed 
You should have access to the AQA insert (periodic table and data sheet) to help with answering the questions. 
 
 
 
Grade boundaries 
These are VERY rough guesses! Getting a C on this paper does not guarantee you the same mark in the exam. ...
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AQA AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry MAY 2023
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AQA 
 
 
 
 
AS 
CHEMISTRY 
Paper 1 Inorganic and Physical Chemistry 
 
Tuesday 16 May 2023	Morning	Time allowed: 1 hour 30 minutes 
Materials 
For this paper you must have: 
•	the Periodic Table/Data Sheet, 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. 
...
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