Atoms, Ions, and Isotopes

Front

What is an isotope?

Back

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

Front

What particles determine the mass number of an atom?

Back

The mass number of an atom is determined by the total number of protons and neutrons.

Front

How do you calculate the mass number of an element?

Back

The mass number is calculated by adding the number of protons and neutrons in the nucleus of an atom.

Front

What is the atomic number of an element?

Back

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

Front

How many protons does Boron (B) have?

Back

Boron has 5 protons.

Front

What is the relationship between neutrons and isotopes?

Back

Isotopes are formed when the number of neutrons in an atom changes, while the number of protons remains the same.

Front

How many neutrons does a typical Bromine atom have?

Back

A typical Bromine atom has 45 neutrons.

Front

What is the significance of the atomic mass unit (amu)?

Back

The atomic mass unit (amu) is a standard unit of mass that quantifies mass on an atomic or molecular scale, used to express atomic and molecular weights.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions that have lost electrons, while anions are negatively charged ions that have gained electrons.

Front

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

Back

To determine the number of neutrons, subtract the atomic number (number of protons) from the mass number.