And molar mass Study guides, Class notes & Summaries
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2023 AQA A-level PHYSICS 7408/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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2023 AQA A-level PHYSICS 7408/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 
[VERIFIED] 
A-level 
PHYSICS 
Paper 2 
Friday 9 June 2023 Morning Time allowed: 2 hours 
Materials 
For this paper you must have: 
• a pencil and a ruler 
• a scientific calculator 
• a Data and Formulae Booklet 
• a protractor. 
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 th...
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GACE Science Practice Test Questions and Answers Already Passed
- Exam (elaborations) • 36 pages • 2024
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GACE Science Practice Test Questions 
 
and Answers Already Passed 
 
A researcher is studying the response of bacteria to a certain chemical. In 3 experiments, the 
bacteria swim towards the chemical, and in one experiment the bacteria swims away from it. 
What would be the most appropriate next step for the researcher. 
a. Report only the 1st three experiments. 
b. Report all the experiments but refrain from making any conclusions. 
c. Repeat the experiment several more times and apply a stati...
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First Semester Study Guide AP Chem Buck Exam 196 Questions with Verified Answers,100%CORRECT
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First Semester Study Guide AP Chem Buck Exam 196 Questions with Verified Answers 
 
Salts containing which of the following ions are generally insoluble in cold water? 
a. nitrate 
b. acetate 
c. phosphate 
d. potassium 
e. ammonium - CORRECT ANSWER C. Phosphate 
 
Which of the following changes alone would cause a decrease in the value of Keq for the reaction represented above? 
a. Decreasing the volume of the 
reaction vessel 
b. Adding a catalyst 
c. Increasing the volume of the 
reacti...
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Student Exploration: Moles GIZMO ( ALL ANSWERS CORRECT )
- Exam (elaborations) • 7 pages • 2022
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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...
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IB Chemistry SL Latest Update Graded A+
- Exam (elaborations) • 11 pages • 2024
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IB Chemistry SL Latest Update 
 
Graded A+ 
 
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 this shows the arrangement of atoms an ...
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Edexcel iGCSE Chemistry, question and answer with rated solution
- Exam (elaborations) • 29 pages • 2023
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Edexcel iGCSE Chemistry, question and answer with rated solution 
Experiment for Diffusion? 
1) HCl placed at one end of the test tube, ammonia solution at the other. 
2) Where they meet, a ring of Ammonium Chloride appears. 
3) The diagram shows that the ammonia is closer to the ring, showing that ammonia must have travelled faster, showing it's a lighter gas. 
 
 
 
Experiment for Dilution? 
1) Put a coloured substance in a solvent e.g food colouring in water. 
2) Over the time, the colour le...
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BTEC Applied Science Unit 1 Chemistry (Graded)
- Exam (elaborations) • 31 pages • 2024
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BTEC Applied Science Unit 1 Chemistry (Graded) How many electrons can a d subshell hold? correct answer10 
Which subshells are available in the first energy level? correct answers 
Which subshells are available in the second energy level? correct answers and p 
Which subshells are available in the third energy level? correct answers, p and d 
What is Hund's rule? correct answerOrbitals must all be singly filled before they can be doubly occupied 
Which elements do not fill the 4s subshell befor...
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Chem Exam: Types of Calculation Questions & Answers 100% Verified
- Exam (elaborations) • 25 pages • 2024
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Chem Exam: Types of Calculation Questions & Answers 100% Verified 
Calorimetry Calculations: 
1. 2.50 kJ of energy changes the temperature of a sample of lead by 8.52 degrees C. What is the mass of 
the sample? - ANS-Q = mcΔT 
m=Qc/Δt 
m = 2500/0.13(8.52) 
= 2.3×103 g 
2. 950.3 J of energy is removed from 28.5 g of water at 80.3 degrees C. What is the final temperature? - 
ANS-Q = mcΔT 
−950.3 = 28.5(4.18)(T2 − 80.3) 
T2 = −950.3/(28.5)(4.18) + 80.3 
= 72.3O C 
3. A 30.56 g sample...
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AQA A-level PHYSICS 7408/2 Paper 2 Version: 1.0 Final *JUN237408201* IB/M/Jun23/E7 7408/2QUESTION PAPER & MARKING SCHEME/ [MERGED] Mark scheme June 2023
- Exam (elaborations) • 77 pages • 2024
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AQA 
A-level 
PHYSICS 
7408/2 
Paper 2 
Version: 1.0 Final 
*JUN* 
IB/M/Jun23/E7 7408/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
8–32 
TOTAL 
Friday 9 June 2023 Morning Time allowed: 2 hours 
Materials 
For this paper you must have: 
• a pencil and a ruler 
• a scientific calculator 
• a Data and Formulae Booklet 
• a protractor. 
Instructions 
• Use black ink or black ball-point pen. 
• Fill in the boxes at the top of this page. 
• Answer all questions. 
• Yo...
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NCC WOMEN'S HEALTH CARE PRACTITIONER WHNP 5 EXAM QUESTIONS AND ANSWERS 2024.
- Exam (elaborations) • 11 pages • 2024
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NCC WOMEN'S HEALTH CARE PRACTITIONER WHNP 5 EXAM QUESTIONS AND ANSWERS 2024. 
A 24 year old woman comes in for evaluation because of darkening of her nipples 
and increased breast sensitivity. The NP orders what test? 
a) beta HCG 
b) serum prolactin 
c) testosterone level - Answer Beta HCG 
NOB patient has cystic fibrosis. The fetus is at risk for... 
a) growth restriction 
b) respiratory failure 
c) pulmonary hypoplasia - Answer Growth restriction (d/t lack of oxygen & poor 
dietary intake) 
...
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