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AQA 7404[1 & 2]CHEMISTRY PAPER 1 & 2-AS-MAY 2023. Paper 1 Inorganic and Physical Chemistry Paper 2 Organic and Physical Chemistry

0 1 A strong interaction between a negative kaon (K− ) and a proton (p) produces an omega-minus (Ω−) particle, a neutral kaon (K0 ) and an unidentified particle Y. The interaction is: K− + p → Ω− + K0 + Y Table 1 contains information on the particles in this interaction. 0 1 box . 3 Suggest how energy is conserved in this interaction. Refer to the rest energies of the particles in Table 1. [2 marks] The quark structure of the Ω− particle is sss. The Ω− is unst...

0 1 This question is about the analysis of organic compounds. For each pair of compounds in Questions 01.1 and 01.2, give a reagent (or combination of reagents) that could be added separately to each compound in a single reaction to distinguish between them. State what is observed in each case. 0 1 . 1 CH3CH2CH2CHO and CH3CH2CH(OH)CH3 [3 marks] Reagent(s) Observation with CH3CH2CH2CHO Observation with CH3CH2CH(OH)CH3 0 1 . 2 Cyclohexane and cyclohexene [3 marks] Reagent(s) Observa...

AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry 0 1 This question is about the elements in Period 3. 0 1 . 1 Give the full electron configuration of the element in Period 3 with the highest first ionisation energy. [1 mark] 0 1 . 2 Give an equation, including state symbols, to represent the process that occurs when the second ionisation energy of sodium is measured 0 2 This question is about the elements in Group 2. 0 2 . 1 Describe the structure and bonding in magnesium. [2 ma...

0 1 . 1 Give the three structural features found in all virus particles and describe the function of one of these features. [2 marks] 1 2 3 Function of one named feature 0 1 . 2 Explain why viruses are described as acellular and non-living. [2 marks] 0 1 . 3 Give one reason why antibiotics are not effective against viruses. [1 mark] 5 3 *03* Turn over ► IB/M/Jun23/7402/1 Do not write outside the 0 2 box . 1 Chitin is a polysaccharide. The chitin monomer is a β-glucose mol...

AQA 7366FURTHERMATHEMATICS-AS-[PAPER1,PAPER2D,PAPER2M,PAPER2S]

0 1 . 1 Which statement about the function of ribosomes is correct? Tick () one box. [1 mark] Site of transcription, catalyse the joining of amino acids by hydrolysis reactions Site of transcription, catalyse the joining of nucleotides by condensation reactions Site of translation, catalyse the joining of amino acids by condensation reactions Site of translation, catalyse the joining of nucleotides by hydrolysis reactions 0 1 . 2 Name two biological molecules that can b...

0 1 . 1 Describe the primary structure of all proteins 0 1 . 2 This question is about the genetic code. Define universal, non-overlapping and degenerate. [3 marks] Universal Non-overlapping 0 2 . 4 Some strains of Streptococcus bacteria are more likely to cause lung disease than other strains. Strains that do not cause lung disease are quickly destroyed by phagocytes. Phagocytes are stimulated when they bind to murein on Streptococcus bacteria. Each strain of Streptococcus bacteria ha...

1 The continuous random variable X has variance 9 The discrete random variable Y has standard deviation 2 and is independent of X Find Var(X + Y ) Circle your answer. 2 The random variable T has a discrete uniform distribution and takes the values 1, 2, 3, 4 and 5 Find the variance of T Circle your answer 4 The proportion, p, of people in a particular town who use the local supermarket is unknown. A random sample of 30 people in the town is taken and each person is asked if they u...

1 A particle moves along the x-axis under the action of a force, F newtons, where F = 3x2 + 5 Find the work done by the force as the particle moves from x = 0 metres to x = 2 metres. Circle your answer. [1 mark] 12 J 17 J 18 J 34 J 2 Two particles are moving directly towards each other when they collide. Given that the collision is perfectly elastic, state the value of the coefficient of restitution. Circle your answer. 3 A stone of mass 0.2 kg is thrown vertically upwards with a s...

Paper 2 Discrete AS FURTHER MATHEMATICS Paper 2 Discrete Friday 19 May 2023 Afternoon Time allowed: 1 hour 30 minutes Materials l You must have the AQA Formulae and statistical tables booklet for A‑level Mathematics and A‑level Further Mathematics. l You should have a graphical or scientific calculator that meets the requirements of the specification. l You must ensure you have the other optional Question Paper/Answer Book for which you are entered (either Mechanics or Statistics)...

1 Which expression below is equivalent to tanh x ? Circle your answer. [1 mark] sinh x cosh x 2 The two vectors a and b are such that a.b = 0 State the angle between the vectors a and b Circle your answer 6 (a) Find and simplify the first five terms in the Maclaurin series for e2x [2 marks] ______________________________________________________________________________________ ______________________________________________________________________________________ _________________...

1 Find the coefficient of x7 in the expansion of (2x  3)7 Circle your answer. [1 mark] 2187 128 2 128 2 Given that y ¼ 2x3 find dy dx Circle your answer. [1 mark] dy dx ¼ 5x2 dy dx ¼ 6x2 dy dx ¼ x4 2 dy dx ¼ 6x3 3 The curve with equation y ¼ ln x is transformed by a stretch parallel to the x-axis with scale factor 2 Find the equation of the transformed curve

AQA SOCIOLOGY-AS-PAPER 1 & 2 [7191] 2023. THIS PACKAGE IS IMPORTANT FOR SOCIOLOGY STUDIES

0 1 Outline two similarities between the functionalist and Marxist views of education. [4 marks] 0 2 Outline three criticisms of marketisation policies in education 0 3 Read box Item A below and answer the question that follows. Item A Throughout their schooling pupils are told that everyone has the same opportunity to succeed. Schools prepare pupils for the workplace. Sociologists suggest that the hidden curriculum may help to reproduce the social class structure. Applying material ...

Section A Research Methods Answer all questions in this section. 0 1 Outline two advantages of using primary research methods in sociological investigations. [4 marks] 0 2 Evaluate the disadvantages of using covert observation in sociological research. Section B Choose one topic from this section and answer all the questions on that topic. Topic B1 Culture and Identity 0 3 Define the term ‘stereotype’. [2 marks] 0 4 Using one example, briefly explain how an individual’s sexualit...

0 1 Define the term ‘material deprivation’. [2 marks] Extra space 0 2 Using one example, briefly explain how streaming may affect pupil achievement in schools. [2 marks] Extra space 2 2 3 *03* Turn over ► IB/M/Jun23/7191/1 Do not write outside the 0 3 Outline three criticisms of Marxist views of the role of education in capitalist society. box [6 marks] Extra space 6 4 *04* IB/M/Jun23/7191/1 Do not write outside the 0 4 Outline and explain two ways in which governm...

AQA PSYCHOLOGY A LEVEL PAPER 1 & 2 [7182] 2023 1 Introductory topics in psychology 2 Psychology in context.

0 1 Which of the following statements is correct according to the psychodynamic approach? Shade one circle only. [1 mark] A The ego is present at birth. B The id is based on the morality principle. C The id is part of the unconscious mind. D The superego mediates between the demands of the id and ego. 0 2 State one assumption of the cognitive approach. [1 mark] 3 *03* Turn over ► IB/G/Jun23/7182/2 Do not write outside the Steph and Georgie are both working mothers. box S...

0 1 Which two of the following best describe Zimbardo’s prison study? Shade two boxes only. [2 marks] A Controlled observation B Covert observation C Laboratory experiment D Natural experiment E Participant observation Students Natasha and Tanya are buying food in the supermarket on their way home from school. As they are paying, they notice their psychology teacher, Mr Boat, at the far end of the queue. They both smile and wave. Mr Boat shouts, “Hey, you two! I think you owe me...