Chapter 14: reactivity series

Question 1

metal + cold water

products?

Answer 1

metal + cold water → metal hydroxide + hydrogen gas

magnesium & above

Question 2

metal + cold water

reactions?

Answer 2

potassium: reacts very violently, purple flame is produced
sodium: reacts violently, yellow flame is produced
calcium: reacts readily
magnesium: reacts very slowly

zinc, iron, lead, copper, silver: no reaction

Question 3

metal + steam

products?

Answer 3

metal + steam → metal oxide + hydrogen gas

iron & above

Question 4

metal + steam

reactions?

Answer 4

potassium, sodium, calcium: reacts explosively

magnesium: reacts violently
zinc: reacts rapidly
iron: reacts slowly

lead, copper, silver: no reaction

Question 5

metal + dilute HC/ acid

products?

Answer 5

metal + dilute HC/ acid → metal chloride + hydrogen gas

iron & above

Question 6

metal + dilute HC/ acid

reactions?

Answer 6

potassium, sodium: reacts explosively

calcium: reacts violently
magnesium: reacts rapidly
zinc: reacts moderately fast
iron: reacts slowly

lead, copper, silver: no reaction