Chemical Reactions Module Exam Practice Flashcard

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances with different properties.

Front

What is a precipitate?

Back

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

Front

What is a single displacement reaction?

Back

A reaction where one element replaces another in a compound, represented as A + BC → AC + B.

Front

What is a double displacement reaction?

Back

A reaction where parts of two compounds exchange places to form two new compounds, represented as AB + CD → AD + CB.

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products, represented as AB → A + B.

Front

What is a synthesis reaction?

Back

A reaction where two or more simple substances combine to form a more complex substance, represented as A + B → AB.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What is an example of a chemical reaction that produces gas?

Back

Mixing vinegar and baking soda produces carbon dioxide gas.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings, usually in the form of heat.