Chapter Flashcard 5-6 (DEC 7)

Front

What is percent yield?

Back

Percent yield is a measure of the efficiency of a reaction, calculated as (actual yield / theoretical yield) x 100%. It indicates how much of the expected product was actually obtained.

Front

How do you calculate percent yield if the actual yield is 25g and the theoretical yield is 30g?

Back

Percent yield = (25g / 30g) x 100% = 83.33%.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout. Examples include sweet tea and saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the composition is not uniform throughout. Examples include salad and sand.

Front

What are coefficients in a chemical equation?

Back

Coefficients are the numbers placed before the compounds in a chemical equation to indicate the number of moles of each substance involved in the reaction.

Front

How do you balance the equation Na + F₂ → NaF?

Back

The balanced equation is 2Na + F₂ → 2NaF, with coefficients 2, 1, 2.

Front

What type of reaction is A + B → AB?

Back

This is a synthesis (combination) reaction, where two or more reactants combine to form a single product.

Front

What is a combustion reaction?

Back

A combustion reaction is a chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a chemical reaction where a single compound breaks down into two or more simpler products.