Chem Sem 1 Exam

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons to achieve a full outer shell.

Front

How do covalent bonds help atoms achieve a full outer shell?

Back

The atoms share electrons in order to get a full outer shell.

Front

Where are electrons located in an atom?

Back

Electrons are located outside the nucleus.

Front

What is the ionic formula for magnesium oxide?

Back

MgO

Front

What is the name of the compound MgO?

Back

Magnesium oxide.

Front

How do you name the molecular compound NF3?

Back

The name is nitrogen trifluoride.

Front

What does the atomic mass of an element represent?

Back

The atomic mass represents the average mass of an element's atoms, measured in atomic mass units (amu).

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the chemical symbol for oxygen?

Back

The chemical symbol for oxygen is O.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.