Periodic Table

Front

Hydrogen and Helium have similar physical and chemical properties.

Back

False

Front

What is the atomic mass of Calcium (Ca)?

Back

40.08

Front

The chemical properties of an element are determined by the number of:

Back

valence electrons

Front

Ions are elements with the same number of protons and a different number of neutrons.

Back

False

Front

How many protons does Potassium (K) have?

Back

19

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that determine its chemical properties.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is an ion?

Back

An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.

Front

What is the difference between an isotope and an ion?

Back

Isotopes have the same number of protons but different numbers of neutrons; ions have the same number of protons but different numbers of electrons.