Balancing Chemical Equations

Front

What is a coefficient in a chemical equation?

Back

The large number in front of a chemical formula that indicates how many molecules or moles of that substance are present.

Front

What are reactants in a chemical equation?

Back

The substances that undergo a chemical change, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

The substances that are produced as a result of a chemical reaction, found on the right side of the equation.

Front

What type of reaction is represented by the equation 2HI --> H2 + I2?

Back

Decomposition reaction, where a single compound breaks down into two or more products.

Front

What type of reaction is represented by the equation Pb(NO3)2 + 2KI --> PbI2 + 2KNO3?

Back

Double replacement reaction, where two compounds exchange components.

Front

What does the arrow (--> ) signify in a chemical equation?

Back

It indicates the direction of the reaction, showing that reactants are transformed into products.

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 a synthesis reaction?

Back

A type of reaction where two or more reactants combine to form a single product.

Front

What is a decomposition reaction?

Back

A type of reaction where a single compound breaks down into two or more simpler substances.

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another in a compound.