Periodic Table Review

Front

What is the atomic number of an alkali metal?

Back

19

Tags

NGSS.HS-PS1-1

Front

What type of change causes a substance to change to a new substance with different properties?

Back

Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

How many valence electrons do halogens have?

Back

7

Front

Which element has two valence electrons and two energy levels?

Back

Beryllium (Be)

Front

What do the vertical columns on the periodic table indicate?

Back

The number of valence electrons (electrons on the outermost shell)

Front

What is the definition of an alkali metal?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for having one valence electron and being highly reactive.

Tags

NGSS.HS-PS1-1

Front

What is the significance of the atomic number?

Back

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

Front

What are valence electrons?

Back

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

Front

What is a chemical bond?

Back

A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-3

Front

What is the periodic table?

Back

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