24-25 Fall Final Review

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 shattering.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Signs of a chemical change include gas formation, temperature change, precipitate formation, and color change.

Front

What does the coefficient in a chemical formula represent?

Back

The coefficient is the number before a compound formula that indicates the number of molecules present.

Front

What is a molecule?

Back

A molecule is formed when two or more atoms chemically combine.

Front

What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates move towards each other, often causing one plate to be forced below the other.

Front

What is a divergent boundary?

Back

A divergent boundary is where two tectonic plates move away from each other, leading to the formation of new crust.

Front

What is a transform boundary?

Back

A transform boundary is where two tectonic plates slide past each other horizontally.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements chemically combine.

Front

What is a precipitate?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

What is gas formation in a chemical reaction?

Back

Gas formation is a sign of a chemical change where a gas is produced as a result of the reaction.