Consumer Chemistry

The following are example of Alkali earth metal, except;

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This elements is present in shells and bones.

• Magnesium

• Calcium

• Potassium

• Iron

Which of the following example has a krypton element?

• Flashlight

• Advertising signs

• Fireworks

• Lasers

Which of the following is not belong in family 1?

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Which of the following elements found in Family 1 Period 2?

• Beryllium

• Sodium

• Hydrogen

• Lithium

Each horizontal row of the Periodic table is called ____

Which of the following does not describe the alkali earth metal?

• Alkali metal has high density, metallic luster and good in electrical and thermal conductivity.

• They form compounds by losing, or in the case of beryllium, sharing two electrons per atom

• alkali metal are heavy metals because their atoms are relatively small and their large numbers of protons and neutrons give them relatively large masses.

• The alkali metals also react readily with many other types of chemicals, including acids, sulfur, phosphorus, the halogens (Group VIIA), and, with the exception of beryllium, hydrogen.

The vertical columns are called groups or families that has_________.

• different properties due to their atomic number

• similar physical properties and they have the same number of electron

• similar chemical properties due to their similarities in the number of electrons in their outer shells.

• similar physical properties due to their similarities in the number of electrons in their outer shells.

Periodic table consists of horizontal rows are called _______

• period or series, and the elements belonging to same periods have different properties.

• period or series, and the elements belonging to same periods have similar properties.

• period or series have a unique properties

What happen to the metallic properties of an elements as you go from left to right?

• Increasing

• The same

• Decreasing