Honors Chem Unit 3 - Midterm Exam Review - 24-25

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into different substances with new chemical properties, such as burning paper.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, also known as a solution.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition and the different components can be seen.

Front

What is a compound?

Back

A compound is a substance formed when two or more atoms are chemically combined.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is filtration?

Back

Filtration is a separation method that uses a filter to allow liquid particles to pass through while trapping solid particles.

Front

What is decanting?

Back

Decanting is a separation technique that involves pouring off a liquid to separate it from solid particles that have settled at the bottom.

Front

What is distillation?

Back

Distillation is a separation process that relies on differences in boiling points to separate components of a mixture.

Front

What is centrifugation?

Back

Centrifugation is a separation technique that uses rapid spinning to separate substances of different densities.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.