Physical Science-Benchmark #2

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons in order to have eight electrons in their outer shell, achieving a stable electron configuration.

Front

How many electrons do atoms want in their outer shell according to the octet rule?

Back

8

Front

Where are valence electrons located in an atom?

Back

In the outermost energy level.

Front

Who proposed the nuclear model of the atom through the gold foil experiment?

Back

Ernest Rutherford.

Front

What is the definition of density?

Back

Density is the mass per unit volume of a material.

Front

What is a supersaturated solution?

Back

A supersaturated solution contains more solute than it can hold at a given temperature.

Front

What is the primary characteristic of a saturated solution?

Back

A saturated solution contains exactly the maximum amount of solute that can dissolve at a given temperature.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is a substance formed when two or more different types of atoms bond together.

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 significance of the periodic table?

Back

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