Atoms and Periodic Table

Front

The periodic table is organized into columns called _______ and rows called ______.

Back

groups and periods

Front

Which particle has a positive charge?

Back

proton

Front

An atomic mass unit can be described as:

Back

A unit of mass used to express atomic and molecular weights.

Front

Which of the following best describes the three general groups (classes) of elements?

Back

metals, nonmetals, metalloids

Front

This material will slow down or stop the flow of energy.

Back

insulator

Front

What is the smallest unit of an element that retains the properties of that element?

Back

atom

Front

What is the center of an atom called?

Back

nucleus

Front

What are the negatively charged particles in an atom called?

Back

electrons

Front

What is the term for elements that have similar properties and are found in the same column of the periodic table?

Back

groups

Front

What is the term for the horizontal rows in the periodic table?

Back

periods