Chemical Reactions

Front

Is burning wood a chemical or physical change?

Back

Chemical change: A process where substances transform into new substances with different properties.

Front

What is the left part of a chemical equation called? H2 + O → H2O

Back

Reactants: The starting substances in a chemical reaction.

Front

What is the best evidence that a chemical reaction occurs when coal burns?

Back

A new substance is produced: Indicates a chemical change has occurred.

Front

What are the substances listed on the right side of a chemical equation called?

Back

Products: The substances formed as a result of a chemical reaction.

Front

What are the four main types of chemical reactions?

Back

Synthesis, decomposition, single displacement, and double displacement.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of atoms to form new substances.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction; it is conserved.

Front

What is a catalyst?

Back

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

Front

What is an exothermic reaction?

Back

A reaction that releases energy, usually in the form of heat.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.