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level: Alkali Metals

Questions and Answers List

level questions: Alkali Metals

QuestionAnswer
What are the Group 1 Elements?-Lithium -Sodium -Potassium -Rubidium -Caesium -Francium
What do Group 1 Elements have, that are Similar?-All have 1 Electrons in the Outer Shell = Similar Chemical Properties -Low Melting and Boiling Points, when compared by Other Metals -Low Density. First 3 can Float on Water -Stupidly Soft. Can be cut via a Knife
What can Alkali Metals Form? Why?-They can make Ionic Compounds -This is because of the fact that they lose their Outer Electrons easily, so making Covalent Bonds is Useless
What is the Charge made by Group 1?-Simply a +1 Charge
What is the Reactivity Series of Group 1? Why?-As you go down the Group, the Alkali gets more Reactive -This is due to the Outer Electron being more easily Lost, as you go down the Group, therefore also meaning the Atomic Radius being Larger, so there is less Attraction Force, so needs Less Energy
What happens when an Alkali reacts with Water?-They react Aggressively -It always makes an Hydroxide of the Metal [Alkali] and Hydrogen Gas as well
What happens when Sodium reacts with Water? -Give Balanced EquationSodium + Water --> Sodium Hydroxide + Hydrogen [2Na] + [2H²O] ---> [2NaOH] + [H²]
What happens as you react water with -Lithium [Least Reactive] -Sodium -Potassium -Rubidium -Caesium [Most Reactive]-Lithium simply would move around, and Fizzle Spontaneously -Sodium and Potassium do the Same, but can Melt in the Heat of the Reaction. Potassium goes a step further as it can Ignite the Hydrogen Gas that is Made -Rubidium and Caesium react very Aggressively with the Water, and can Explode if Wet.
What happens if an Alkali reacts with an Acid? What is Made?-A Salt will be made, containing the Acid and Alkali -Hydrogen gas will be Present
Give an example with Sodium reacting with Hydrochloric Acid -Balanced Equation-Sodium + Hydrochloric Acid ---> Sodium Chloride + Hydrogen [2Na] + [2HCl] ---> [2NaCl] + [H²]
What's the Problem with reacting an Acid with an Alkali?-They can get a lot more Dangerous, compared to doing it with Alkali + Water -They might have to be stored in Oil, to stop them reacting with the Air.