Caco3 - Samenvattingen, Aantekeningen en Examens
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2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/1H Chemistry Paper 1H Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/1H Chemistry 
Paper 1H Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] 
Materials 
For this paper you must have: 
• a ruler 
• a scientific calculator 
• the periodic table (enclosed). 
Instructions 
• Use black ink or black ball-point pen. 
• Pencil should only be used for drawing. 
• Fill in the boxes at the top of this page. 
• Answer all questions in the spaces provided. 
• If you need extra space for your answer(s), ...
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Introduction to Chemistry 5th Edition Bauer Test Bank
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Introduction to Chemistry, 5e (Bauer) Chapter 3 Chemical Compounds 1) The figure shows all but which of the following? 1. A) two elements and a compound 2. B) a chemical reaction 3. C) one mixture and one pure substance 4. D) three compounds Answer: D Difficulty: 1 Easy Topic: Study of Chemistry Bloom’s: 2. Understand Gradable: automatic Subtopic: Classification and States of Matter; Properties of Matter Accessibility: Keyboard Navigation 2) Which of the substances shown in the figure is an io...
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CHEM 103 MODULE 3 EXAM WITH ANSWERS
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CHEM 103 MODULE 3 EXAM WITH ANSWERS 
 
 
Click this link to access the Periodic Table. This may be helpful throughout 
the exam. 
 
 
A reaction between HCl and NaOH is being studied in a styrofoam coffee cup with a lid and the heat given off is measured by means of a thermometer immersed in the reaction mixture. Enter the correct thermochemistry term to describe the item listed. 
 
 
1.	The type of thermochemical process 
 
2.	The calorimeter and mixture of HCl + NaOH Your Answer: 
1.	The typ...
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OCR AS LEVEL CHEMISTRY A H032/01 BREADTH IN CHEMISTRY ORIGINAL 2024 EXAM 100 % COMPLETE QUESTIONS AND ANSWERS A+ SCORE GUARANTEED.CHECK THE LAST PAGE FOR ANSWERS.
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OCR AS LEVEL CHEMISTRY A H032/01 BREADTH IN CHEMISTRY 
 ORIGINAL 2024 EXAM 100 % COMPLETE QUESTIONS AND ANSWERS 
A+ SCORE GUARANTEED.CHECK THE LAST PAGE FOR ANSWERS. 
1	Which substance contains polar molecules? 
 
A	C2H4 
B	CO2 
C	NCl 3 
D	SF6 
Your answer	 	[1] 
 
 
2	What is the formula of silver carbonate? 
 
A	AgCO3 
B	Ag(CO3)2 
C	Ag2CO3 
D	Ag3CO3 
Your answer	 	[1] 
 
 
3	Which statement explains why ice is less dense than water? 
 
A	Hydrogen bonds are stronger in ice than in water. 
 
B	H...
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AAMC practice exam 4 2023/2024 with 100% correct answers
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Limestone does NOT decompose when heated to 900 K because, at 900 K, ΔH is: 
*The chemist placed a sample of limestone, CaCO3(s), into a sealed chamber and then heated the limestone to 1200 K to generate CO2(g) and CaO(s). 
 
A. 
positive and less than TΔS. 
B. 
positive and greater than TΔS. 
C. 
negative and less than TΔS. 
D. 
negative and greater than TΔS. - correct answer A. 
positive and less than TΔS. 
 
think about it, if H is positive and less than TS than G is positive and the ...
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SWS3022 Exam Questions and Answers All Correct
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SWS3022 Exam Questions and Answers All Correct 
 
What happens to phosphorus when the soil is basic (high pH)? - Answer-- insoluble solids are formed (Calcium phosphates) 
- Ca + HPO4 = CaHPO4 
- CaHPO4 will crystallize overtime and become highly insoluble 
 
What pH is preferred for plant availability/solubility? - Answer-6.5 
 
What are the four types of phosphorus immobilization? - Answer-- low pH (Fe and Al phosphate solids) 
- high pH (Ca phosphate) 
- fixation in crystalline Fe and Al oxi...
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WT5 Water Treatment Grades 3 & 4 Exam Questions and Answers
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Which disinfectant would work best against cryptosporidium 
ozone 
dichloramine 
hypochlorite ion 
hypochlorous ion 
ozone 
The pH of a water sample is greater than the pHs, so the Langelier index? 
indicates the water is corrosive 
is negative 
indicates the water is scale forming 
indicates the water is stable 
indicates the water is scale forming 
When water high in calcium bicarbonate is softened by ion exchange 
all cations and anions are removed 
regeneration is usually accomplished by an ...
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AAMC MCAT PRACTICE EXAM 4 2024 /ACTUAL EXAM WITH 100% CORRECT DETAILED ANSWERS WITH EXAPLANATIONS/A+ GRADE/LATEST UPDATE 2024-2025
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AAMC MCAT PRACTICE EXAM 4 2024 /ACTUAL EXAM WITH 100% CORRECT DETAILED ANSWERS WITH EXAPLANATIONS/A+ GRADE/LATEST UPDATE 
 
 
Limestone does NOT decompose when heated to 900 K because, at 900 K, ΔH is: 
*The chemist placed a sample of limestone, CaCO3(s), into a sealed chamber and then heated the limestone to 1200 K to generate CO2(g) and CaO(s). 
 
 
A. 
positive and less than TΔS. B. 
positive and greater than TΔS. C. 
negative and less than TΔS. D. 
negative and greater than TΔS. 
 - co...
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INORGANIC- GREEN PACOP | 300 Questions with 100% Correct Answers | Verified | Latest Update 2024
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1. Ammoniated mercury is also known as: 
a. calomel 
b. corrosive sublimate 
c. lunar caustic 
d. white precipitate - D 
2. The rays which have no mass and no charge but of very high energy and excellent penetrating power: 
a. alpha 
b. beta 
c. gamma 
d. x-ray - C 
3. Antacids that cause "rebound" hyperacidity are: 
a. Mg(OH)2 & Al(OH)2 
b. Na2CO3 
c. NA2S2O3 & MgSO4 
d. NaHCO3 & CaCO3 - D 
4. Evolves a gas with a fruity odor when treated with concentrated sulfuric acid and ethanol: 
a. aceta...
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IB Chemistry SL: Topic 4 Latest Version Graded A
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IB Chemistry SL: Topic 4 Latest Version 
 
Graded A 
 
Ionic Bond Electrostatic attraction between oppositely charged ions 
 
Covalent Bond Electrostatic attraction between a pair of electrons and positively charged 
nuclei, formed as a result of electron sharing 
 
Metallic Bond Electrostatic attraction between a lattice of positive ions and delocalized 
electrons 
 
Polyatomic ions ions with more than one element 
 
e.g. CaCO3, Al(OH)3, Mg(NO3)2, (NH4)2SO4, Ba3PO4, LiHCO3 
 
Lattice ions arran...
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