CHEM Lab Assessment

Front

What class of reaction is represented by the equation: FeS + HCl ⟶ H₂S + FeCl₂?

Back

Double replacement reaction.

Front

What happens to an indicator when it is in contact with an acid or base?

Back

It changes color.

Front

The reaction XY ⟶ X + Y is an example of what type of reaction?

Back

Decomposition reaction.

Front

What class of reaction is represented by the equation: CH₄ + O₂ ⟶ CO₂ + H₂O?

Back

Combustion reaction.

Front

What is a lone pair in chemistry?

Back

A pair of non-bonding electrons.

Front

Define a synthesis reaction.

Back

A reaction where two or more reactants combine to form a single product.

Front

What is a combustion reaction?

Back

A reaction that involves the burning of a substance in the presence of oxygen, producing heat and light.

Front

What is the difference between a single replacement and a double replacement reaction?

Back

In a single replacement reaction, one element replaces another in a compound; in a double replacement reaction, the ions of two compounds exchange places.

Front

What is the role of an acid-base indicator?

Back

To visually show the pH level of a solution by changing color.

Front

What is the general form of a decomposition reaction?

Back

A single compound breaks down into two or more simpler products.