SASS 2021 MCQ Power Prac

_______________________________________________________________________________________________________________________________________________________________________________________ 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