Atenea -S3: Chemistry - End of Trimester II Exam

Section A: Periodic Table

Multiple choice.

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How are the elements arranged in the Periodic Table

• In order of increasing atomic number

• In order of increasing proton charge

• In order of decreasing weight

• In order of decreasing mass number

What does the term Periodic mean in Chemistry?

• Occurs almost never
• Occurs in heavy elements
• Occurs once or twice
• Occurs or repeats at regular intervals

How is the trend of reactivity of metals down the group?

• It stays constant
• It decreases down the group
• Depends on the size of metal atom
• It increases down the group

Why do you think the reactivity of non-metals decreases down the group?

• Because they attract neutrons
• Because they react with noble gases
• Because the elements lose the power of pulling valence electrons to center
• non-metals are too heavy to react with other elements

Why are members of Group I called Alkali metals?

• The names were given by Mendeleev himself
• Because they react with as Alkali gas
• Because when dissolved in water, they form alkali solution.
• Because when dissolved in alkali they form acid

Aluminium is a metal member of Group 13.

As a metal it has many properties.

Below is one of the properties (select it)

• It is heavy
• It can resist corrosion

• Poor conductor of heat
• It is found in air as gas

This information is not present in periodic table

• Atomic number
• Mass number / Atomic mass

• Element symbol
• Element name

• Element volume

The following are noble gas elements except ______

• Vibranium

• Xenon

• Neon
• Krypton

Which of the following, have the same property?

• Elements in a period
• Elements in a group
• Elements with the same color
• Elements with same number of letters