Chemistry In Society Midterm Exam

Front

What is an alkali metal?

Back

Alkali metals are elements found in Group 1 of the periodic table, characterized by their high reactivity and the presence of one electron in their outermost shell. Example: Sodium (Na).

Front

Which material is a liquid?

Back

Material B is a liquid.

Front

What is the name for PBr2?

Back

The name for PBr2 is phosphorus dibromide.

Front

What happens when an atom loses an electron?

Back

When an atom loses an electron, it becomes a positive ion.

Front

What does an oxidation charge of 2+ indicate about an element's electrons?

Back

An oxidation charge of 2+ indicates that the element has lost 2 electrons.

Front

What are the properties of alkali metals?

Back

Alkali metals are soft, shiny, and highly reactive, especially with water, forming alkaline hydroxides.

Front

What is the difference between a positive ion and a negative ion?

Back

A positive ion (cation) is formed when an atom loses electrons, while a negative ion (anion) is formed when an atom gains electrons.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is a chemical bond?

Back

A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.

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.