Final Prep Flashcard 2

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. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Indicators include fizzing, foaming, and burning.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Dissolving sugar in water is an example of a physical change.

Front

What are some indicators of a chemical change?

Back

Indicators of a chemical change include fizzing, foaming, color change, temperature change, and the production of light or sound.

Front

What happens during a physical change?

Back

During a physical change, the form of a substance changes, but its chemical identity remains the same.

Front

Is freezing juice a physical or chemical change?

Back

Freezing juice is an example of a physical change.

Front

Which of the following is NOT a physical change: crumpled paper, pencil sharpening, shrunken clothing, or rust?

Back

Rust is NOT a physical change; it is a chemical change.

Front

Is melting butter for popcorn a chemical or physical change?

Back

Melting butter for popcorn is a physical change.

Front

What is an example of a chemical change?

Back

An example of a chemical change is the rusting of iron.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.