Particles in Chemistry, Classification, and Changes

Front

What is a heterogeneous mixture?

Back

A mixture in which different materials can be identified easily.

Front

What is an element? Give an example.

Back

A pure substance that cannot be broken down into simpler substances. Example: O2 (oxygen).

Front

What is a homogeneous mixture?

Back

A mixture where components cannot be distinguished by simple sight.

Front

What are intramolecular forces?

Back

Forces that hold atoms together within a molecule.

Front

What are intermolecular forces?

Back

Attraction forces between 2 or more molecules.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down, while a compound is made up of two or more elements chemically combined.

Front

What is a solution?

Back

A homogeneous mixture where one substance is dissolved in another.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a physical change?

Back

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