Honors Chemistry Semester 1 Review

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does a sodium atom have?

Back

1

Front

What is accuracy in measurements?

Back

Accuracy refers to how close a measured value is to the accepted or true value.

Front

What is a chemical property of a substance?

Back

A chemical property describes a substance's ability to undergo chemical changes.

Front

What is the chemical property of water when it reacts with sodium?

Back

Water reacts with sodium to produce sodium hydroxide and hydrogen gas.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, has no charge, and contributes to the atom's mass.

Front

What is the difference between accuracy and precision?

Back

Accuracy is how close a measurement is to the true value, while precision refers to how consistent repeated measurements are.

Front

What happens to electronegativity in group 16 elements as you move down the group?

Back

Electronegativity decreases as you move down group 16.

Front

What is the significance of the Bohr Model in chemistry?

Back

The Bohr Model illustrates the arrangement of electrons in an atom and helps explain atomic structure.

Front

What is the definition of a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.