1st Semester Review (PS)

Front

What is a family in the periodic table?

Back

A grouping of elements based on similar properties, arranged by columns; also known as a group.

Front

Which color represents metalloids on the periodic table?

Back

Bright yellow.

Front

How do you order liquids from most dense to least dense?

Back

The order is 4, 3, 2, 1.

Front

What is the correct name for the compound NaCl?

Back

Sodium chloride.

Front

What is the half-life of iodine-131?

Back

8 days.

Front

What is a period in the periodic table?

Back

A horizontal row of elements in the periodic table.

Front

Define metalloids.

Back

Elements that have properties of both metals and nonmetals.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in an atom's nucleus and determines the element's identity.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.