Chemical Equations

Front

What are the signs that a chemical reaction has occurred?

Back

Color change, odor change, change in temperature, and formation of a precipitate.

Front

What are the reactants in the equation N2 + H2 -> NH3?

Back

N2 + H2

Front

In a chemical reaction, what is a product?

Back

A substance that is formed as a result of a chemical reaction.

Front

What indicates that a new substance was formed when mixing two clear liquids?

Back

A yellow solid forms and settles to the bottom of the beaker.

Front

According to the law of conservation of mass, if reactant A has 5g and product C has 9g, how much does reactant B weigh?

Back

4g

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does the arrow in a chemical equation represent?

Back

The direction of the reaction, indicating that reactants are transformed into products.

Front

What is a reactant?

Back

A substance that undergoes change in a chemical reaction.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is a precipitate?

Back

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