Reaction of metal with acids

Front

Metals that react quickly or strongly with water and acids are described as?

Back

Reactive

Answer explanation

Metals that react quickly or strongly with water and acids are classified as reactive. This term indicates their tendency to undergo chemical reactions readily, distinguishing them from unreactive metals.

Front

An acid reacts with a metal to produce:

Back

Salt and hydrogen gas

Answer explanation

When an acid reacts with a metal, it typically produces salt and hydrogen gas. The reaction involves the metal displacing hydrogen from the acid, resulting in these two products.

Front

What type of reaction is the following?
HCl + Zn → ZnCl₂ + H₂

Back

Acid and a metal

Answer explanation

The reaction between HCl and Zn produces ZnCl2 and H2, indicating that an acid (HCl) reacts with a metal (Zn). This is characteristic of an acid and a metal reaction, making it the correct choice.

Front

What observation might indicate that a metal is reacting with water?

Back

Fizzing, gas produced

Answer explanation

When a metal reacts with water, it often produces fizzing due to the release of hydrogen gas. This is a clear indication of a chemical reaction, making 'Fizzing, gas produced' the correct observation.

Front

Which salt will be produced if magnesium reacts with hydrochloric acid?

Back

Magnesium chloride

Answer explanation

When magnesium reacts with hydrochloric acid, it produces magnesium chloride (MgCl2) and hydrogen gas. The other options, such as magnesium oxide, sulfate, and sulfide, are not formed in this reaction.

Front

An acid reacts with a metal to produce:

Back

Metal salt and hydrogen gas

Answer explanation

When an acid reacts with a metal, it typically produces a metal salt and hydrogen gas. This is a common reaction in chemistry, distinguishing it from other products like carbon dioxide.

Front

Reaction of metals with dilute hydrochloric acid: zinc, copper, magnesium, iron.

Back

Gas given off with magnesium.

Answer explanation

When dilute hydrochloric acid is added to magnesium, it reacts vigorously, producing hydrogen gas. This is the correct observation, while zinc and copper do not react significantly with dilute HCl, and iron reacts but not as quickly as magnesium.

Front

Which statement is correct about all metals? Options: They are attracted to magnets., They are weak and brittle., They may be used to form alloys., They react with water.

Back

They may be used to form alloys.

Answer explanation

The correct statement is that all metals may be used to form alloys. This is true as metals can combine with other metals or non-metals to create materials with enhanced properties, unlike the other statements which are not universally applicable.

Front

What are the reactants in the reaction of a metal with an acid?
Metal + acid → metal salt + hydrogen

Back

Metal and acid

Answer explanation

In the reaction of a metal with an acid, the reactants are the metal and the acid. The products formed are a metal salt and hydrogen gas, making 'Metal and acid' the correct choice.

Front

What are the products of the reaction between a metal and an acid? Metal + acid → metal salt + hydrogen

Back

Metal salt and hydrogen

Answer explanation

The reaction between a metal and an acid produces a metal salt and hydrogen gas. Therefore, the correct answer is 'Metal salt and hydrogen', as both products are formed in this reaction.