2021 SASS Chem P1 Topical

_______________________________________________________________________________________________________________________________________________________________________________________ Page 1 ST ANDREW’S SECONDARY SCHOOL NAME CLASS DATE CHEMISTRY 6092 2021 GCE O-LEVEL TOPICAL REVISION PACK MULTIPLE-CHOICE QUESTIONS A Kinetic Particle Theory J Salts and Qualitative Analysis B Experimental Techniques K Redox Reactions C Purification and Separation L Metals D Elements, Mixtures and Compounds M Electrolysis E Atomic Structure N The Periodic Table F Ionic Bonding O Energy Changes G Covalent and Metallic Bonding P Speed of Reaction H The Mole and Chemical Calculations Q Ammonia I Acids and Bases R The Atmosphere and Environment 𝛀 Miscellaneous 18 topics of 10 questions + 5 miscellaneous = 185 MCQ! A Kinetic Particle Theory A1 A2 4 © UCLES 2020 5070/11/M/J/20 5 W h i c h s t a t e m e n t a b o u t m e t h o d s o f p u r i f i c a t i o n a n d a n a l y s i s i s c o r r e c t ? A A liquid that boils over a range of temperatures may still be 100% pure. B An insoluble substance may be separated from water by crystallisation. C Chromatography may only be used to separate coloured substances. D Liquid air can be fractionally distilled, giving oxygen as one of the products. 6 W h i c h c h a n g e s i n p r e s s u r e a n d t e m p e r a t u r e w o u l d b o t h r e s u l t i n a d e c r e a s e i n t h e v o l u m e o f a fixed mass of gas? A D e c r e a s e t h e p r e s s u r e a n d d e c r e a s e t h e t e m p e r a t u r e . B D e c r e a s e t h e p r e s s u r e a n d i n c r e a s e t h e t e m p e r a t u r e . C I n c r e a s e t h e p r e s s u r e a n d d e c r e a s e t h e t e m p e r a t u r e . D I n c r e a s e t h e p r e s s u r e a n d i n c r e a s e t h e t e m p e r a t u r e . 7 Which definition of isotopes is correct? A a t o m s o f d i f f e r e n t e l e m e n t s w h i c h h a v e t h e s a m e n u m b e r o f e l e c t r o n s B a t o m s o f d i f f e r e n t e l e m e n t s w h i c h h a v e t h e s a m e n u m b e r o f n e u t r o n s C a t o m s o f t h e s a m e e l e m e n t w h i c h h a v e d i f f e r e n t n u m b e r s o f e l e c t r o n s D a t o m s o f t h e s a m e e l e m e n t w h i c h h a v e d i f f e r e n t n u m b e r s o f n e u t r o n s 8 W h i c h i o n h a s t h e m o s t s h e l l s t h a t c o n t a i n e l e c t r o n s ? A Al 3+ B B e2+ C N3– D S2– 9 W h i c h s u b s t a n c e c o n d u c t s e l e c t r i c i t y b o t h w h e n s o l i d a n d w h e n m o l t e n ? A a n a l l o y B a h y d r o c a r b o n C a m e t a l o x i d e D a s a l t 10 W h i c h s u b s t a n c e i s a n i o n i c c o m p o u n d ? A a m m o n i a B c a l c i u m c h l o r i d e C e t h a n o i c a c i d D h y d r o g e n c h l o r i d e 6 © UCLES 2020 5070/12/M/J/20 6 H y d r o g e n s u l f i d e , H2S, and hydrogen chloride, HCl, are both gases at temperatures above –50 °C. Which gas will diffuse most rapidly at the temperature given? A h y d r o g e n c h l o r i d e a t – 4 0 °C B h y d r o g e n c h l o r i d e a t – 2 0 °C C h y d r o g e n s u l f i d e a t – 4 0 °C D h y d r o g e n s u l f i d e a t – 2 0 °C 7 T h e d i a g r a m s h o w s t h e r e l a t i v e m a s s a n d t h e r e l a t i v e c h a r g e o f t w o p a r t i c l e s , and , present in atoms and ions. 2000 1 –1 0 relative charge relative mass Which of these particles are present in a hydrogen atom and in a hydrogen ion? H H + A both and b o t h and B both and but not C but not n e i t h e r nor D but not but not 8 W h i c h i o n h a s t h e m o s t s h e l l s t h a t c o n t a i n e l e c t r o n s ? A Al 3+ B B e2+ C N3– D S2– 9 W h i c h s u b s t a n c e c o n d u c t s e l e c t r i c i t y b o t h w h e n s o l i d a n d w h e n m o l t e n ? A a n a l l o y B a h y d r o c a r b o n C a m e t a l o x i d e D a s a l t

_______________________________________________________________________________________________________________________________________________________________________________________ Page 2 A3 A4 A5 2 © UCLES 2019 5070/11/M/J/19 1 An experiment is done to measure the rate of reaction between calcium carbonate and dilute hydrochloric acid. The gas formed is collected in a gas syringe. Which additional pieces of apparatus are essential to measure how the rate of the reaction changes with temperature and the amount of acid used? apparatus to measure temperature apparatus to measure amount of acid used A balance thermometer B measuring cylinder balance C thermometer condenser D thermometer measuring cylinder 2 A f t e r a c i d i f i c a t i o n w i t h d i l u t e n i t r i c a c i d , a c o l o u r l e s s s o l u t i o n o f X r e a c t s w i t h a q u e o u s silver nitrate to give a white precipitate. What could X be? A calcium iodide B copper(II) chloride C lead(II) iodide D sodium chloride 3 A p a p e r c h r o m a t o g r a p h y e x p e r i m e n t i s c a r r i e d o u t t o s e p a r a t e a n d i d e n t i f y t h e m i x t u r e o f amino acids produced from the hydrolysis of a protein. Which apparatus is needed? A c h r o m a t o g r a p h y p a p e r , l o c a t i n g a g e n t , m a r k e r p e n , s o l v e n t B c h r o m a t o g r a p h y p a p e r , l o c a t i n g a g e n t , p e n c i l , r u l e r , s o l v e n t C chromatography paper, locating agent, ruler, solvent, thermometer D c h r o m a t o g r a p h y p a p e r , l o c a t i n g a g e n t , p e n c i l , s o l v e n t , t h e r m o m e t e r 4 Which conditions will give the highest rate of diffusion of a gas? molecular mass of gas temperature A large high B large low C small high D small low 2 © UCLES 2018 0439/23/M/J/18 1 Ammonia gas is reacted with hydrogen chloride gas using the apparatus shown. Solid ammonium chloride is produced. cotton wool soaked in ammonia solution cotton wool soaked in hydrogen chloride solution long glass tube solid ammonium chloride Which statement explains why the solid amm onium chloride is formed nearer to the hydrogen chloride? A A m m o n i a s o l u t i o n i s a b a s e a n d h y d r o g e n c h l o r i d e s o l u t i o n i s a n a c i d . B A m m o n i a m o l e c u l e s d i f f u s e m o r e s l o w l y t h a n h y d r o g e n c h l o r i d e m o l e c u l e s . C H y d r o g e n c h l o r i d e h a s a g r e a t e r m o l e c u l a r m a s s t h a n a m m o n i a . D H y d r o g e n c h l o r i d e m o v e s b y B r o w n i a n m o t i o n . 2 P a p e r c h r o m a t o g r a p h y i s d o n e i n t h e s a m e w a y w i t h t h r e e d i f f e r e n t m i x t u r e s o f d y e s . E a c h mixture contains at least one of the dyes W, X, Y and Z. The Rf values of the dyes in the three mixtures are shown. dye Rf values from mixture 1 Rf values from mixture 2 Rf values from mixture 3 W 0.15 0.15 0.15 X 0.00 0.00 0.00 Y 0.50 0.50 0.50 Z 0.00 0.91 0.91 Which conclusion is correct? A Dye W is nearest the solvent front and is present only in mixture 1 and mixture 3. B Dye X has traveled furthest up the chromatography paper. C Dye Y is the only dye present in all three mixtures. D Dye Z is nearest the solvent front and is found in only two of the mixtures. 2 © UCLES 2010 0620/11/M/J/10 1 T h e d i a g r a m s h o w s a c u p o f t e a