Semester 1 Chemistry Final review

Front

What is hydrogen bonding?

Back

Hydrogen bonding is a type of attractive interaction that occurs when hydrogen is covalently bonded to highly electronegative atoms such as nitrogen (N), oxygen (O), or fluorine (F).

Front

Which molecules exhibit hydrogen bonding?

Back

Molecules like NH3 (ammonia) exhibit hydrogen bonding due to the presence of hydrogen bonded to nitrogen.

Front

What is the atomic mass of Fluorine (F)?

Back

The atomic mass of Fluorine (F) is 19.

Front

How many protons does the element with atomic number 7 have?

Back

The element with atomic number 7 is nitrogen (N), which has 7 protons.

Front

Identify a nonmetal from the following options: sodium, tungsten, sulfur, silicon.

Back

Sulfur is a nonmetal.

Front

What is a correct dot diagram for oxygen (O)?

Back

A correct dot diagram for oxygen shows 6 valence electrons, not 8.

Front

Define atomic mass.

Back

Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is the significance of protons in an atom?

Back

Protons determine the atomic number of an element and its identity.

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

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are dull, insulative, and brittle.