BY: ASTI RAHAYU SLAMET

ALKALI METAL

S

BY: ASTI RAHAYU SLAMET

ALKALI ELEMETS

WHAT DO YOU THINK ABOUT IT???

CONTENT OF MATTER

ALKALI METALS

What do you know about characters alkali metals???

Alkali metals is the most reactive metal

The compounds alkali metal ions and compounds are generally classified soluble in water.

Reactivity of alkali metals

ANIMASI

Comparison the character of alkali metal and alkaline earthTO THE RIGHT (ONE PERIOD) Increases the melting

point Increasing boiling point Increased destiny Reduced atomic radius Reduced volume of the

atom Reduced base

UNDER (ONE GROUP) Increased speed Increasing atomic

radius Increased reductant Reduced boiling point Reduced melting point

REACTION OF ALKALI METALSWith Oxigen

With Halogen

With Hydrogen

With water

With dilute acid

With ammonia gas

Alkali metals abudance

Alkali manufacture (making natrium)

ANIMASIANIMASI

HERE IS THE REACTION

REACTION: NaCl(l) → 2Na+(l) + 2Cl- (l)CATHODE : 2Na+ (l) + 2e → 2Na (l)ANODE : 2Cr (l) → Cl2(g) + 2e

Function of Alkali metals

Useful of lithiumLithium batteries used to make

Sodium cloride is used fortable salt

KNO3 used as an essential

componenet of explosive

Cont’d

For fertilizer and plant (KCl & K2SO4)use as an essential component of explosives

TASK

Find the other functions of the alkali metals !!!

Simulations of alkali metal

ANIMASI

Cont’d

VIDEO

Alkali metal is more reactive than the alkaline earthTRUE FALSE

EXERCISES

Cont’d

In the manufacture of sodium metal, molten NaCl is mixed with compounds CaCl2 objective that sodium metal produced the more

TRUE FALSE

TEST

1. Between the base below the greatest solubility….

A. Mg(OH)2 B. Ba(OH)2 C. Be(OH)2 D. Sr(OH)2 E. Ca(OH)2

2. If the compound KNO3 was burnt on the fire, the flame color of potassium Is…..

a. Purpleb. Redc. Blued. Green e. Yellow

TOTAL TRUE :TOTAL FALSE :

TEST RESULT

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