Do Now - AP - Mass Spec

Front

What are isotopes?

Back

Elements with different numbers of neutrons.

Front

How many isotopes are shown in this mass spectrum?

Back

4.

Front

What do these isotopes of carbon all have in common?

Back

Atomic number and electrons.

Front

What is the average atomic mass for this element?

Back

10.2 amu.

Front

Which element does this mass spectrum most likely represent?

Back

Boron.

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of mass spectrometry?

Back

It is used to determine the mass-to-charge ratio of ions.

Front

What is the difference between mass number and atomic mass?

Back

Mass number is the total number of protons and neutrons, while atomic mass is the weighted average of all isotopes.

Front

What is a common application of mass spectrometry?

Back

Identifying the composition of a sample.

Front

What does a mass spectrum display?

Back

The abundance of each isotope of an element.