3.1.2 Group 2 and 3.1.3 Group 7
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/10
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
11 Terms
3.1.2 (b)(i) Write an equation for the reaction between a group 2 metal and oxygen
2M(s) + O2(g)→ 2MO(s)
3.1.2 (b)(ii) Write an equation for the reaction between a group 2 metal and steam
M(s) + H2O(g) → MO(s) + H2(g)
3.1.2 (b)(ii) Write an equation for the reaction between a group 2 metal and water
M(s) + 2H2O(l) → M(OH)2(aq) + H2(g)
3.1.2 (c) Why does reactivity increase as you go down group 2?
shielding and atomic radius increase down the group
decreased nuclear attraction
lower first and second IE
3.1.2 (d) Write an equation for the reaction between a group 2 oxide and water
MO(s) + H2O(l) → M(OH)2
3.1.2 (d) Explain the trend in increasing alkalinity
solubility of hydroxides increase as you go down the group
concentration of OH- ions increases, increasing pH
3.1.2 (d) Which metal hydroxide is insoluble in water?
Be(OH)2
3.1.2 (e)(i) Give one use of Ca(OH)2
Used in agriculture to neutralise acidic soil
3.1.2 (e)(ii) Give one use of Mg(OH)2 and CaCO3
anatcids which treat indigestion
3.1.3 What is the trend in oxidising ability of halogens down group 7?
Oxidising ability decreases down the group as reactivity decreases
shielding and atomic radius increase down the group
nuclear attraction decreases
more difficult to gain an electron to form 1- ions
3.1.3 What is the trend in reducing ability of halide ions down group 7?
Reducing ability increases down the group
shielding and ionic radius increases
nuclear attraction decreases
more likely to lose an electron
