Chemistry A Semester Exam Practice Flashcard

Front

What is table salt (NaCl) classified as?

Back

Compound and pure substance.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

How is metallic bonding best described?

Back

A lattice of positively charged metal ions surrounded by a sea of delocalized electrons.

Front

How many liters are in 253 mL?

Back

0.253 L.

Front

What is the order of elements from lowest to highest electronegativity: Selenium (Se), Chlorine (Cl), Bromine (Br), Sulfur (S)?

Back

Selenium (Se), Sulfur (S), Bromine (Br), Chlorine (Cl).

Front

Define a compound.

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is an ionic bond?

Back

A chemical bond formed through the transfer of electrons from one atom to another.

Front

What is a covalent bond?

Back

A chemical bond formed by the sharing of electron pairs between atoms.

Front

What is electronegativity?

Back

A measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What is the significance of the periodic table in chemistry?

Back

It organizes elements based on their atomic number, electron configuration, and recurring chemical properties.