Elements and the Periodic Table

Front

What is the atomic number of an element based on?

Back

The atomic number of an element is based on the number of protons in its nucleus.

Front

At room temperature, what state are more than half of the nonmetals in?

Back

At room temperature, more than half of the nonmetals are gases.

Front

What does beta radiation consist of?

Back

Beta radiation consists of particles that are identical to electrons.

Front

What can you predict from an element's location in the periodic table?

Back

From an element's location in the periodic table, you can predict its properties.

Front

True or False: Thompson's model of the atom describes electron orbits as resembling planets orbiting the sun.

Back

False.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements, organized by increasing atomic number and grouped by similar properties.

Front

What are nonmetals?

Back

Nonmetals are elements that typically lack the characteristics of metals and are often poor conductors of heat and electricity.

Front

What is the significance of the atomic mass of an element?

Back

The atomic mass of an element is the weighted average mass of its isotopes, reflecting the relative abundance of each isotope.

Front

What are isotopes?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.