Group 1Oxford AQA IGCSE Chemistry: Flashcards

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What is another name for Group 1 metals?

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What is another name for Group 1 metals?: The alkali metals
Name three Group 1 metals.: Lithium, sodium and potassium (also rubidium, caesium, francium)
How does the density of the first three Group 1 metals compare to water?: They are less dense than water, so they float on it
What charge does a Group 1 metal ion carry?: +1
What type of compound is formed when a Group 1 metal reacts with a non-metal?: An ionic compound
What colour are Group 1 metal compounds typically, and what colour solution do they form in water?: White solids that dissolve to form colourless solutions
What gas is released when a Group 1 metal reacts with water?: Hydrogen
Write the word equation for sodium reacting with water.: Sodium + water → sodium hydroxide + hydrogen
Why are Group 1 metals called the 'alkali' metals?: Because they form metal hydroxides that dissolve in water to give alkaline solutions
How does reactivity change going down Group 1?: Reactivity increases going down the group
Which is more reactive: potassium or sodium?: Potassium is more reactive than sodium
Are Group 1 metals hard or soft?: Soft — they can be cut with a knife