Physical properties thermal and electrical conductivity; melting – and boiling points; solubility in different solvents; viscosity etc. Other uses and applications 2B.P5 Describe chemical Explain how physical and chemical properties of chemical properties of chemical substances make the following suitable for their uses: substances. a. sodium azide in airbags; b. argon in welding; c. silicon in computer–chip technology; d. carbon dioxide in fire extinguishers. 5 Investigate the viscosity of different motor oils and write a lab 2B.M4 Explain how physical and report. chemical properties of chemical Research the properties of motor oil and complete a worksheet substances make them suitable your company could use to explain to the importance of keeping for their uses. their car engine oil topped up. Extend your engine oil research further to give more technical 2B.D3 Assess the suitability of information including boiling point and viscosity and relate these to different types of substance for a the running temperature of a car engine and the conditions in specified use. which the engine is operating. Complete assessment activity 2.4 from Pearson Principles of Applied Science: Imagine you are a chemist working for a company producing rocket fuel. Assess and write a fully referenced report on the suitability of hydrogen, hydrazine and gunpowder as rocket fuels. Say which one you would recommend and justify your choice with reference to their chemical and physical properties. 6 2C.P6/P7 Identify the number Research and describe the factors that affect rates of chemical and types of atoms in balanced reactions. a. Investigate the effect of temperature on the reaction between chemical reactions. sodium thiosulphate and hydrochloric acid. Describe how increasing temperature changes the rate of reaction. b. Write the word and symbol equations for the reaction then identify the types and numbers of each atom present in the products and in the reactants. Give the state of each substance involved. a. Investigate effect of catalyst solid manganese dioxide on the decomposition of hydrogen peroxide. b. Describe how the catalyst changes the rate of reaction. Write the word and symbol equations for the reaction then identify the
2B.P5 Describe chemical properties of chemical substances. Physical properties – thermal and electrical conductivity; melting and boiling points; solubility in different solvents; viscosity etc. Other uses and applications Explain how physical and chemical properties of chemical substances make the following suitable for their uses: a. sodium azide in airbags; b. argon in welding; c. silicon in computer–chip technology; d. carbon dioxide in fire extinguishers. 5 2B.M4 Explain how physical and chemical properties of chemical substances make them suitable for their uses. 2B.D3 Assess the suitability of different types of substance for a specified use. Investigate the viscosity of different motor oils and write a lab report. Research the properties of motor oil and complete a worksheet your company could use to explain to the importance of keeping their car engine oil topped up. Extend your engine oil research further to give more technical information including boiling point and viscosity and relate these to the running temperature of a car engine and the conditions in which the engine is operating. Complete assessment activity 2.4 from Pearson Principles of Applied Science: Imagine you are a chemist working for a company producing rocket fuel. Assess and write a fully referenced report on the suitability of hydrogen, hydrazine and gunpowder as rocket fuels. Say which one you would recommend and justify your choice with reference to their chemical and physical properties. 6 2C.P6/P7 Identify the number and types of atoms in balanced chemical reactions. Research and describe the factors that affect rates of chemical reactions. a. Investigate the effect of temperature on the reaction between sodium thiosulphate and hydrochloric acid. Describe how increasing temperature changes the rate of reaction. b. Write the word and symbol equations for the reaction then identify the types and numbers of each atom present in the products and in the reactants. Give the state of each substance involved. a. Investigate effect of catalyst solid manganese dioxide on the decomposition of hydrogen peroxide. b. Describe how the catalyst changes the rate of reaction. Write the word and symbol equations for the reaction then identify the