CHEMISTRY FALL 2024 EXAM REVIEW

Front

What is a chemical bond?

Back

A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together.

Front

What are nuclear forces?

Back

The forces that attract protons within a nucleus to each other.

Front

What does Dalton's atomic theory state about atoms of different elements?

Back

Atoms of different elements combine in simple whole-number ratios to form compounds.

Front

What conclusion did Rutherford draw from his gold foil experiment?

Back

Atoms are mostly empty space.

Front

What is a key difference between Dalton's theory and modern atomic theory?

Back

Dalton's theory states that all atoms of the same element have the same mass, which is not true due to isotopes.

Front

Define valence electrons.

Back

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

Front

What is the significance of the atomic number?

Back

The atomic number defines the number of protons in an atom and determines the element's identity.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

Explain the concept of electronegativity.

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.

Front

What is a covalent bond?

Back

A chemical bond formed by the sharing of electrons between atoms.