$CATEGORY: Science - Khan Academy/3.Metals and Non-metals/3.Metals and Non-metals--Chemical Properties of metals

//Multiple Choice

What is typically produced when a metal reacts with an acid?
{
= Hydrogen gas
~ Oxygen gas
~ Nitrogen gas
~ Carbon dioxide gas
}

Which of the following metals does not react with dilute hydrochloric acid?
{
~ Magnesium
~ Zinc
= Copper
~ Iron
}

When zinc reacts with dilute hydrochloric acid, the salt formed is\:
{
= Zinc chloride
~ Zinc sulfate
~ Zinc nitrate
~ Zinc carbonate
}

Which acid is most commonly used to test the reactivity of metals?
{
= Hydrochloric acid
~ Sulfuric acid
~ Nitric acid
~ Acetic acid
}

Which of the following metals reacts violently with dilute acids?
{
~ Magnesium
= Sodium
~ Aluminum
~ Gold
}

//True or False

Hydrogen gas is released when a metal reacts with dilute sulfuric acid. {T}

Metals below hydrogen in the reactivity series do not react with dilute acids. {T}

Zinc reacts with hydrochloric acid to produce zinc nitrate. {F}

Sodium reacts explosively with dilute acids. {T}

The reaction between copper and hydrochloric acid produces hydrogen gas. {F}

//Fill in the blanks

When a metal reacts with dilute acid, __________ gas is released.
{
~ Oxygen
= Hydrogen
~ Carbon dioxide
}

The reaction of magnesium with hydrochloric acid forms __________ and hydrogen gas.
{
~ Magnesium nitrate
= Magnesium chloride
~ Magnesium sulfate
}

Copper does not react with dilute acids because it is __________ reactive than hydrogen.
{
~ More
= Less
~ Equally
}

The bubbles observed when zinc reacts with sulfuric acid are due to __________ gas.
{
~ Oxygen
~ Nitrogen
= Hydrogen
}

Aluminum reacts with dilute acids to form a salt and __________ gas.
{
= Hydrogen
~ Oxygen
~ Carbon dioxide
}

//Numericals



//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Magnesium + HCl -> Magnesium chloride + Hydrogen gas
=Zinc + H₂SO₄ -> Zinc sulfate + Hydrogen gas
=Copper + HCl -> No reaction
=Iron + HCl -> Iron chloride + Hydrogen gas
=Sodium + HCl -> Explosive reaction
}


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