Understanding Chemical Reactions

Front

Each substance written to the LEFT of the arrow in a chemical equation is a ____.

Back

reactant

Front

What are the reactants in the equation 2H₂O₂ ---> 2H₂O + O₂?

Back

hydrogen peroxide (2H₂O₂)

Front

Which of the following is certain proof a chemical reaction has occurred? (bubbles, examining the properties of the matter, color, all of these)

Back

examining the properties of the matter

Front

A change in _____ is a sign of ENERGY being used in a chemical reaction.

Back

temperature

Front

If the arrangement of atoms in a substance changes, then which of the following is true? (A chemical reaction has occurred, The physical state of the substance changes, The chemical properties of the substance stay the same but the physical properties change)

Back

A chemical reaction has occurred.

Front

What is a chemical reaction?

Back

A process where reactants transform into products, involving the rearrangement of atoms.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction, written to the RIGHT of the arrow.

Front

What is a catalyst?

Back

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

Front

What is a precipitate?

Back

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

Front

What does the law of conservation of mass state?

Back

Matter cannot be created or destroyed in a chemical reaction; the mass of reactants equals the mass of products.