Flashcards
Group 1 metals
Flashcards do conjunto (11)
- 1Why are lithium, sodium and potassium placed in group 1?They have 1 electron in the outer shell
- 2Why are they also called alkali metals?When they react with water they form an alkali solution (lithium hydroxide, sodium hydroxide and potassium hydroxide)
- 3Why are group 1 metals stored in oil?The oils prevents them reacting with oxygen
- 4List 4 properties of group 1 metals that are different to other metalsThey have
low melting points
they are very soft
low density (float)react quickly with wter - 5What is produced when lithium reacts with water?Lithium + Water = Lithium hydroxide +Hydrogen(g)
- 6What is observed when lithium reacts with water?It fizzes slowly on top of the water
- 7What is produced when sodium reacts with water?sodium + water=sodium hydroxide +hydrogen (g)
- 8What is observed when sodium reacts with water?It forms a molten ball and fizzes quickly on top of the water
- 9What is observed when potassium reacts with water?It produces a lilac flame and moves very quickly on the top of the water
- 10How can you test for hydrogen gas?Plunge a lit splint into the test tube of gas. If it produces a squeaky pop, it is hydrogen.
- 11—
Informações
- Descrição
- FlashCards sobre Group 1 metals, criado por Miss C Rodgers em 28-03-2018.
- Criado por
- Miss C Rodgers
- Visualizações
- 266
- Avaliação