3 Periodic table and energy

Practice questions on Periodic table and energy

• Sodium (Na) and potassium (K) are both elements in Group 1 of the periodic table. Chlorine… (5 marks, Explain)
• Fermentation is a process used to produce ethanol from glucose. During fermentation, yeast… (5 marks, Explain)
• A student investigates two chemical reactions, Reaction X and Reaction Y. In Reaction X, t… (5 marks, Explain)
• Cold packs are used in sports medicine to treat injuries. When a cold pack is activated, a… (5 marks, Explain)
• Hand warmers are single-use packets used by hikers in cold weather. When a hand warmer is … (5 marks, Explain)
• Argon (Ar), potassium (K) and calcium (Ca) are three elements found in Period 3 and Period… (5 marks, Explain)
• A student investigates the combustion of methane. The student knows that during the reacti… (5 marks, Explain)
• Lithium (Li), beryllium (Be) and boron (B) are three elements found at the start of Period… (5 marks, Explain)
• Fluorine, chlorine, bromine and iodine are all elements in Group 7 of the periodic table, … (5 marks, Explain)
• Magnesium (Mg) is in Period 3 and Group 2 of the periodic table. Silicon (Si) is also in P… (5 marks, Explain)