Atoms & Periodic Table

Front

What does the atomic number represent in an element?

Back

The atomic number represents the number of protons in the nucleus of an atom.

Front

How many valence electrons do elements in Group 17 have?

Back

Elements in Group 17 have 7 valence electrons.

Front

What is the chemical symbol for Magnesium?

Back

The chemical symbol for Magnesium is Mg.

Front

What does the letter 'C' represent in the periodic table?

Back

The letter 'C' represents the chemical symbol for Carbon.

Front

Which element is found in Group 2 and Period 4 of the periodic table?

Back

The element found in Group 2 and Period 4 is Calcium.

Front

What is the definition of an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Tags

NGSS.MS-PS1-1

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

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

Back

The atomic mass is the weighted average mass of an element's isotopes, reflecting the number of protons and neutrons.

Tags

NGSS.HS-PS1-7

Front

What is a group in the periodic table?

Back

A group is a vertical column in the periodic table that contains elements with similar chemical properties.