Periodic Table Flashcard

Front

What does the atomic number represent in an atom?

Back

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

Front

How are elements arranged in the modern periodic table?

Back

Elements are arranged by atomic number.

Front

Which element is located in group 2, period 4 of the periodic table?

Back

Calcium (Ca) is found in group 2, period 4.

Front

What is the name of the group of elements that are stable and do not react?

Back

The group of elements that are stable and do not react are called noble gases.

Front

What does the number at the bottom of each square on the periodic table indicate?

Back

The number at the bottom of each square indicates the atomic mass of the element.

Front

What is the chemical symbol for Strontium?

Back

The chemical symbol for Strontium is Sr.

Front

What are valence electrons?

Back

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

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is the significance of the periodic table's groups?

Back

The groups in the periodic table indicate elements with similar chemical properties.

Front

What is an isotope?

Back

An isotope is a variant of an element that has the same number of protons but a different number of neutrons.

Front

What are halogens?

Back

Halogens are elements found in group 17 of the periodic table, known for being highly reactive.