$CATEGORY: Science - Khan Academy/2.Acids, Bases and Salts/2.Acids, Bases and Salts--More About Salts

//Multiple Choice

Baking soda is chemically known as\:
{
~ Sodium carbonate
= Sodium bicarbonate
~ Calcium carbonate
~ Ammonium chloride
}

The chemical formula of baking soda is\:
{
~ NaCl
~ NaOH
= NaHCO₃
~ Na₂CO₃
}

Baking soda is manufactured using the\:
{
~ Haber process
= Solvay process
~ Electrolysis method
~ Fractional distillation
}

Which gas is released when baking soda reacts with an acid?
{
~ Oxygen
= Carbon dioxide
~ Hydrogen
~ Nitrogen
}

Baking soda is used in fire extinguishers because it releases\:
{
~ Oxygen
~ Water vapor
= Carbon dioxide
~ Hydrogen gas
}

//True or False

Baking soda is acidic in nature. {F}

Baking soda is used in making antacids to neutralize excess acid in the stomach. {T}

The decomposition of baking soda produces sodium carbonate, water, and carbon dioxide. {T}

Baking soda is used in the manufacturing of soaps and detergents. {T}

Baking soda reacts with acidic substances to release oxygen gas. {F}

//Fill in the blanks

The chemical name of baking soda is __________.
{
~ Sodium hydroxide
= Sodium bicarbonate
~ Sodium carbonate
}

The chemical formula of baking soda is __________.
{
~ NaOH
~ Na₂CO₃
= NaHCO₃
}

Baking soda is __________ in nature.
{
~ Acidic
= Basic
~ Neutral
}

Baking soda reacts with acids to release __________ gas.
{
~ Oxygen
= Carbon dioxide
~ Hydrogen
}

Baking soda is used in fire extinguishers because it produces __________ gas when heated.
{
~ Oxygen
= Carbon dioxide
~ Nitrogen
}

When baking soda is heated, it decomposes into __________.
{
~ Sodium hydroxide and water
= Sodium carbonate, water, and carbon dioxide
~ Sodium chloride and oxygen
}

Baking soda is used in baking because it makes the dough __________.
{
~ Hard
= Soft and fluffy
~ Bitter
}

//Numericals



//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Baking soda formula -> NaHCO₃
=Reaction with vinegar -> Carbon dioxide release
=Use in fire extinguishers -> Produces CO₂
=Baking soda decomposes to -> Na₂CO₃
=Solvay process -> Production of sodium bicarbonate
}


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