VE Balancing Equations, Chemical Reactions,

Front

What is a valence electron?

Back

The number of electrons in the last shell of an atom.

Front

What does the Law of Conservation of Mass state?

Back

During a chemical reaction, mass is neither created nor destroyed.

Front

What is the general reaction scheme for a single replacement reaction?

Back

A + CD -> C + AD

Front

Which statement BEST describes a proton?

Back

A proton has a larger mass than an electron and a positive charge.

Front

What occurs when electrons are lost by one atom and gained by another?

Back

This process forms an ionic bond.

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products).

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond involves the transfer of electrons, while a covalent bond involves the sharing of electrons.

Front

What is a reactant in a chemical equation?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical equation?

Back

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

Front

What is the purpose of balancing a chemical equation?

Back

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