Chemical Equations Flashcard

Front

Balance the equation: P4 + O2 --> ? P2O3

Back

1 P4, 3 O2, 2 P2O3

Front

Which of the following does NOT form a precipitate? Pb(NO3)2(aq) + 2KI(aq) → ?, Sr(NO3)2(aq) + K2SO4(aq) → ?, AgNO3(aq) + Na2S(aq) → ?, Pb(NO3)2(aq) + AgNO3(aq) → ?

Back

Pb(NO3)2(aq) + AgNO3(aq) → (no precipitate)

Front

What are ions?

Back

Atoms with a positive or negative charge.

Front

Name the compound NO2.

Back

Nitrogen dioxide.

Front

What is the symbol for a Bromine ion that gains 1 electron?

Back

Br-1

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Front

What is a precipitate?

Back

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

Front

What is the difference between a reactant and a product?

Back

Reactants are substances that start a chemical reaction, while products are substances formed as a result of the reaction.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.