SASS Chem Speed of Reaction AfL

Page 1 ST ANDREW’S SECONDARY SCHOOL NAME CLASS DATE CHEMISTRY 17.1 Measuring Speed of Reaction SPEED OF REACTION Assessment for Learning Use the information provided below to answer questions 1 – 4. A student investigates the rate of reaction between marble chips and dilute acid using the apparatus shown. Effervescence was observed during the experiment. 1 What is the chemical formula of the marble chips? A CaCO3 B CaO C MgCO3 D MgO 2 Why is cotton wool used in this apparatus? A To prevent acid spray leaving the conical flask. B To prevent air from entering the conical flask. C To prevent any gas formed from escaping the conical flask. D To prevent excessive bumping of the conical flask by the vigorous reaction. 11 © UCLES 2009 0653/01/M/J/09 [Turn over 23 M a r b l e c h i p s r e a c t w i t h d i l u t e h y d r o c h l o r i c a c i d a s s h o w n . CaCO3(s) + 2HCl (aq) → CaCl 2(aq) + H2O(l) + CO2(g) The progress of this reaction was followed using the apparatus shown. cotton wool balance Which graph shows the results of this experiment? balance reading time 0 0 balance reading time 0 0 balance reading time 0 0 balance reading time 0 0 A B DC 24 Testing for the gases chlorine, hydrogen and oxygen requires different methods. For which gases is a splint used? Cl 2 H2 O 2 A B C D cotton wool electronic balance dilute acidmarble chips

Page 2 3 Which graph shows the results of this experiment? 4 The student repeats the experiment using a different acid instead. All other variables were kept constant in both experiments. However, no effervescence was observed during this experiment. Which acid was used for this experiment? A CH3COOH B HCl C HNO3 D H2SO4 5 Which graph could represent the explosive combustion of methane gas? 11 © UCLES 2009 0653/01/M/J/09 [Turn over 23 M a r b l e c h i p s r e a c t w i t h d i l u t e h y d r o c h l o r i c a c i d a s s h o w n . CaCO3(s) + 2HCl (aq) → CaCl 2(aq) + H2O(l) + CO2(g) The progress of this reaction was followed using the apparatus shown. cotton wool balance Which graph shows the results of this experiment? balance reading time 0 0 balance reading time 0 0 balance reading time 0 0 balance reading time 0 0 A B DC 24 Testing for the gases chlorine, hydrogen and oxygen requires different methods. For which gases is a splint used? Cl 2 H2 O 2 A B C D balancereading balancereading balancereading balancereading time time time time A B C D 11Which graph could represent the explosive combustion of methane? 12Which of the following are properties of the oxides of most non-metals? 13Aqueous ammonia is added to solutions containing the ions of four metals. aluminium copper( II) iron( III) zinc Which of these ions give a coloured precipitate? 0 0 time speed of reaction speed of reaction speed of reaction speed of reaction 0 0time 0 0time 0 0time AB CD 6 0652/01/M/J/03 A B C D property 1 acidic acidic basic basic property 2 covalent ionic covalent ionic A B C D aluminium

copper(II)

iron(III)

zinc

Page 3 6 The apparatus shown is used to measure the speed of a reaction. Which equation represents the reaction where the speed can be measured using this apparatus? A Mg + 2 HCl ® MgCl2 + H2 B HCl + NaOH ® NaCl + H2O C Fe + CuSO4 ® FeSO4 + Cu D 2 Na + Br2 ® 2 NaBr 7 The diagram shows an experiment. The crucible and contents are weighted before heating and then reweighted when cool. What happens to the mass of the crucible and contents? The mass because magnesium is A decreases oxidised B decreases reduced C Increases oxidised D increases reduced 6 © UCLES 2012 0439/13/M/J/12 [Turn over 11 T h e a p p a r a t u s s h o w n i s u s e d t o m e a s u r e t h e s p e e d o f a r e a c t i o n . gas syringe reactants Which equation represents a reaction where the speed can be measured using this apparatus? A Mg(s) + 2HCl (aq) → MgCl 2(aq) + H2(g) B HCl (aq) + NaOH(aq) → NaCl (aq) + H2O(l) C Fe(s) + CuSO4(aq) → Cu(s) + FeSO4(aq) D 2 N a ( s ) + B r2(l) → 2NaBr(s) 12 The diagram shows the reaction between zinc oxide and dilute hydrochloric acid. dilute hydrochloric acid 20 °C pH 1 aqueous zinc chloride 22 °C pH 7 before after zinc oxide powder Which terms describe the reaction? endothermic neutralization A B C D 4 © UCLES 2006 0652/01/O/N/06 7 S u b s t a n c e X does not react with dilute acid but substance Y does, forming a gaseous product. The graph shows the results of experiments using Y and dilute acid alone and then with X added. total volume of gaseous product 0 time Y + acid X + Y + acid What do these results show about X? X is a catalyst X is quickly used up A B C D 8 The diagram shows an experiment. crucible magnesium ribbon heat The crucible and contents are weighed before heating and then reweighed when cool. What happens to the mass of the crucible and contents? the mass because the magnesium is A decreases oxidised B decreases reduced C increases oxidised D increases reduced crucible magnesium ribbon heat

Page 4 8 The diagrams show pieces of apparatus commonly used in experiments to collect gases. Which apparatus are suitable for use to investigate the rate of reaction between a Group II metal and hydrochloric acid? A 1, 2 and 3 B 2 and 3 only C 1 only D 3 only 7 © UCLES 2014 0439/11/M/J/14 [Turn over 16 I n s e p a r a t e e x p e r i m e n t s , a c a t a l y s t i s a d d e d t o a r e a c t i o n m i x t u r e a n d t h e t e m p e r a t u r e o f t h e mixture is decreased. What are the effects of these changes on the rate of the reaction? catalyst added temperature decreased A faster faster B faster slower C slower faster D slower slower 17 A n e x p e r i m e n t i s c a r r i e d o u t t o i n v e s t i g a t e t h e r a t e o f r e a c t i o n w h e n c a l c i u m c a r b o n a t e i s r e a c t e d with hydrochloric acid. The volume of carbon dioxide gas given off is measured at different intervals of time. The diagram shows pieces of apparatus used to collect gases. 1 downward delivery 2 gas measuring syringe 3 over water in graduated tube Which apparatus is suitable to collect and measure the volume of the carbon dioxide? A 1, 2 and 3 B 2 and 3 only C 1 only D 3 only

Page 1 ST ANDREW’S SECONDARY SCHOOL NAME CLASS DATE CHEMISTRY 17.2 Factors Affecting Speed of Reaction SPEED OF REACTION Assessment for Learning 1 The diagram shows a rate of reaction experiment. Increasing both the concentration of the acid and the temperature will affect the rate of reaction. Which row is correct? Increase the concentration of acid Increase the temperature A Decrease rate of reaction Decrease rate of reaction B Decrease rate of reaction Increase rate of reaction C Increase rate of reaction Decrease rate of reaction D Increase rate of reaction Increase rate of reaction 2 Which change does not increase the speed of reaction between zinc and 1.0 mol/dm3 nitric acid? A Decreasing the particle size of the zinc used B Decreasing the temperature C Decreasing the volume of the conical flask used D Using 1.5 mol/dm3 nitric acid instead 3 Which change decreases the rate of reaction between magnesium and air? 1 Heating the magnesium to a higher temperature 2 Using a higher proportion of oxygen in the air 3 Using magnesium ribbon instead of powdered magnesium A 1, 2 and 3 B 1 only C 2 only D 3 only 6 © UCLES 2018 0439/13/M/J/18 12 T h e d i a g r a m s h o w s a r a t e o f r e a c t i o n e x p e r i m e n t . excess dilute hydrochloric acid at 25 °C hydrogen magnesium Increasing the concentration