Atomic Structure and Periodic Table Review

Front

What type of change occurs when sodium metal burns in water?

Back

Chemical Change

Front

How many valence electrons does Phosphorus have?

Back

5

Front

What does the '-131' in Iodine-131 represent?

Back

mass number.

Front

How many valence electrons does Silicon have?

Back

4

Front

What is the subatomic particle with a charge of 0?

Back

neutron

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.