6.2. Rate of reaction
A subsection of Chemistry, 0620, through 6. Chemical reactions
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A student placed a spoonful of sugar in the bottom of a glass of cold tea and left it undisturbed for several minutes. After 2 minutes, she used a straw to taste some of the tea from the top of the glass. It did not taste sweet. After 10 minutes, the sugar had disappeared and the solution at the top of the glass tasted sweet. cold tea sugar at the start after 2 minutes after 10 minutes Use the kinetic particle theory to explain these observations. Glucose is a sugar. The structure of a glucose molecule is shown below. C O C C H H H H H O C C C O H H H H H O O H O H How many different types of atom are there in one molecule of glucose? How many hydrogen atoms are there in one molecule of glucose? On the diagram of the glucose molecule above, put a ring around an alcohol functional group. Glucose is oxidised in the body by a process called respiration. Complete the word equation for respiration. glucose + oxygen → + water When glucose solution is fermented, ethanol is produced. Describe how you would carry out fermentation in the laboratory. State one use of ethanol other than in alcoholic drinks.
0620_s13_qp_22
THEORY
2013
Paper 2, Variant 2
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319