CCHEM Unit 12

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is the freezing point of water in Celsius?

Back

0°C is the freezing point of water.

Front

What is the boiling point of water in Celsius?

Back

100°C is the boiling point of water.

Front

What does it mean for a substance to change its state of matter?

Back

Changing state of matter refers to the transition of a substance from one physical form to another, such as solid, liquid, or gas.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products.

Front

What are coefficients in a chemical equation?

Back

Coefficients are numbers placed in front of the compounds in a chemical equation to indicate the number of molecules involved in the reaction.

Front

What is a particle diagram?

Back

A particle diagram visually represents the arrangement and behavior of particles in a substance, helping to illustrate its state of matter.