Chemistry

ction A and 25 minutes on Section B. 2 Section A Answer all questions in this section. 0 1This question is about the analysis of organic compounds. For each pair of compounds in Questions 01.1 and 01.2, give a reagent (or combination of reagents) that could be added separately to each compound in a single reaction to distinguish between them. State what is observed in each case. 0 1 . 1CH3CH2CH2CHO and CH3CH2CH(OH)CH3 [3 marks] Reagent(s) Observation with CH3CH2CH2CHO Observation ...

2 Section A Answer all questions in this section. 0 1This question is about the elements in Period 3. 0 1 . 1 Give the full electron configuration of the element in Period 3 with the highest first ionisation energy. [1 mark] 0 1 . 2 Give an equation, including state symbols, to represent the process that occurs when the second ionisation energy of sodium is measured. [1 mark] 0 1 . 3 Table 1 shows some successive ionisation energies for an element in Period 3. Table 1 Ionisation nu...

HOW CAN CYANIDE ENTER AND LEAVE MY BODY? Cyanide can enter your body if you breathe air, eat food, or drink water that contains it. Cyanide can enter your body through the skin, but this may occur only in people who work in cyaniderelated industries without adequate protective gear. You can be exposed to contaminated water, air, or soil at hazardous waste sites. Once it is in your lungs or stomach, cyanide can quickly enter the bloodstream. Some of the cyanide is changed to thiocyanate...

Complete Test Bank for Chemistry, 8th Edition by Jill Kirsten Robinson, John E. McMurry, Robert C. Fay ; ISBN13: 9780136874126. (Full Chapters included Chapter 1 to 23)....1.Chemical Tools: Experimentation and Measurement 2.Atoms, Molecules, and Ions 3.Mass Relationships in Chemical Reactions 4.Reactions in Aqueous Solution 5.Periodicity and the Electronic Structure of Atoms 6.Ionic Compounds: Periodic Trends and Bonding Theory 7.Covalent Bonding and Electron-Dot Structures 8.Covalent Com...

Complete Solutions Manual for Chemistry, 8th Edition by Jill Kirsten Robinson, John E. McMurry, Robert C. Fay ; ISBN13: 9780136874126. (Full Chapters included Chapter 1 to 23)....1.Chemical Tools: Experimentation and Measurement 2.Atoms, Molecules, and Ions 3.Mass Relationships in Chemical Reactions 4.Reactions in Aqueous Solution 5.Periodicity and the Electronic Structure of Atoms 6.Ionic Compounds: Periodic Trends and Bonding Theory 7.Covalent Bonding and Electron-Dot Structures 8.Coval...

2 © OCR 2023 1 Argon forms 1% of the air and is unreactive. Argon is used as a replacement for nitrogen when nitrogen is too reactive. (a) Argon is unreactive because it is in Group 0 of the Periodic Table. State one other property of argon. .............................................................................................................................................. [1] (b) Chlorine is very reactive. Argon is unreactive. Explain how the reactivity of these two elements a...

2 © OCR 2023 1 Poly(ethene) is a polymer which forms when ethene monomers react together in an addition polymerisation reaction. The structure of an ethene monomer and the repeating unit of poly(ethene) are shown in Fig. 1.1. Fig. 1.1 H H H H C C C C H H H H Ethene monomer Repeating unit of poly(ethene) (a) Which statements are true only for an ethene monomer, which are true only for the repeating unit of poly(ethene) and which are true for both? Tick () one box in each row. Tru...

2 © OCR 2023 1 The increase in global population means there is a greater need for drinking water. (a) What is the correct term for drinking water? Tick () one box. Ground water Potable water Sea water Waste water [1] (b) One source of drinking water is salt water. Describe a process that separates water from salt water. ................................................................................................................................................... .................

2 © OCR 2023 Section A You should spend a maximum of 30 minutes on this section. Write your answer to each question in the box provided. 1 Crude oil is a resource that is being made extremely slowly. Which word describes a resource that is being made extremely slowly? A Finite B Hydrocarbon C Non‑renewable D Petrochemical Your answer [1] 2 The Group 7 element fluorine is a gas at room temperature and pressure. The Group 7 elements show a trend in boiling points going down the gro...