Reading the Periodic Table

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 does atomic mass represent?

Back

Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Tags

NGSS.HS-PS1-7

Front

How do you calculate the number of neutrons in an atom?

Back

Number of neutrons = Atomic mass - Atomic number.

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.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What group does Carbon belong to in the periodic table?

Back

Carbon belongs to Group 14 in the periodic table.

Front

How many protons does Sulfur have?

Back

Sulfur has 16 protons, as indicated by its atomic number.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

What is an isotope?

Back

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

Front

How do you find the atomic weight of an atom?

Back

The atomic weight is approximately equal to the sum of the number of protons and neutrons in the nucleus.

Front

What does the number 1.00794 represent for Hydrogen?

Back

1.00794 represents the atomic mass of Hydrogen.