earth alkali metals (group 2)

earth alkali metals (group 2)

by hanan khalil

​global citizen

• ​usage of earth alkali

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​engaging :

​write the electronic structure of Be, Mg ,Ca ?

​what is the pattern ?

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Multiple Choice

Which of the following is NOT an alkali metal?

• Li

• Mg

• K

• Cs

Multiple Choice

Alkali earth metals are found in which group of the periodic table?

• Group 1

• Group 2

• Group 7

• group 8

Multiple Choice

Which of the following is NOT an alkali earth metal?

• Be

• Mg

• Ca

• Sn

Multiple Choice

what is the valancy of group 2 ?

• 1

• 2

• 3

• 4

Multiple Choice

earth alkali metals make ..............ion

• +2

• +1

• _1

• +1

Multiple Choice

earth alkali metals have ................properties

• same because they are in the same group

• different because they are in the same group

• same because they are in the same period

• different because they are in the same period

​chemical properties :

​reaction with water

​watch video

Multiple Choice

--------------------- is released when earth alkali metal react with water

• Hydrogen
• Oxygen
• Metahne
• Carbon di oxide

Multiple Choice

What happens to the reactivity of the ear alkali metals as you move down the group?

• increases

• decreases

Multiple Select

Which of the following are earth alkali metals

• Sodium

• Caesium

• Francium

• Calcium

• Potassium

Multiple Choice

Reactivity is a(n) ________property of Metal

• Chemical Property
• Physical Property

Multiple Choice

What is Reactivity?

• The characteristics of a substance that can be observed without changing the identity of the substance.
• A property making a substance react with certain substances
• When a substance combines with another to form a new substance.
• I really don't know at all.

Multiple Choice

The family in the periodic table that contains the most reactive metals is the_______

• Alkaline Earth Metals
• Transition Metals 
• Alkali Metals
• Other Metals

Multiple Choice

Universal indicator would turn which colour when water reacts with the alkali metals?

• Red

• Green

• Blue

• Purple

Multiple Choice

An alloy is....

• A metal-containing rock found naturally in the earth

• Two or more metals joined together

• A substance which turns universal indicator purple

• An unreactive metal found pure in the earth

Multiple Choice

What is the main trend observed in group 2 metals?

• Easily decompose

• Increases in reactivity downwards

• Increases in reactivity upwards

• Becomes denser downwards

Multiple Choice

Reactivity is a(n) ________property of Metal

• Chemical Property
• Physical Property

Multiple Choice

Which of the following is NOT a clue that a chemical change has occurred?

• change in color
• production of gas
• change in termperature
• change in shape

Multiple Choice

What is Reactivity?

• The characteristics of a substance that can be observed without changing the identity of the substance.
• A property making a substance react with certain substances
• When a substance combines with another to form a new substance.
• I really don't know at all.

Multiple Choice

The family in the periodic table that contains the most reactive metals is the_______

• Alkaline Earth Metals
• Transition Metals 
• Alkali Metals
• Other Metals

Multiple Choice

Reacts with metals to form H₂.

• Acids
• Bases
• All
• Salts

Multiple Choice

What environmental element assists rusting?

• nitrogen
• carbon
• oxygen
• hydrogen

Multiple Choice

What is formed when sodium reacts with water?

• sodium oxide and hydrogen
• sodium hydroxide and hydrogen
• sodium hydroxide and oxygen
• sodium hydroxide and carbon dioxide

Multiple Choice

A rusting bicycle

• physical change
• chemical change

Multiple Choice

Which of the following is NOT an alkali metal

• Li
• Cl
• K
• Cs

Multiple Choice

What gas is always produced when a metal reacts with water?

• Oxygen
• Carbon Dioxide
• Hydrogen
• Carbon Monoxide

Multiple Choice

Universal indicator would turn which colour when water reacts with the alkali metals?

• Red

• Green

• Blue

• Purple

​reactivity with acid

​https://youtu.be/8qh5myTmcRs

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Multiple Choice

which is more reactive with acid 

• calcuim 

• magnisuim

Multiple Choice

when metal react with acid ............ gas evolve

• CO2

• H2

• H2o

• none