Parts Of The Atom Worksheet printable pdf download

Parts Of The Atom Worksheet

Name____________________

Parts of the Atom

*Fill in the following table about the parts of the atom. (AMU stands for atomic mass unit.)

PART OF THE ATOM

ELECTRIC CHARGE

LOCATION IN ATOM

MASS (in AMU’s)

proton

neutron

electron

*Here’s how to predict the structure of any element on the periodic table. For example, look at carbon:

atomic number:

This is the number of protons (also the number of electrons)

chemical symbol:

This is an abbreviation for the element.

element name:

carbon

This is the name of the element.

atomic mass (in AMU’s):

This number (rounded off) tells you the number

12.011

of protons plus the number of neutrons. (Electrons are too small to be included.)

To find the number of protons, look at the atomic number:

Example for carbon:

Atomic number: 6

Number of protons: 6

To find the number of neutrons, subtract the atomic number from the atomic mass:

Example for carbon:

Atomic mass: 12 (rounded) Number of neutrons: 12 – 6 = 6

To find the number of electrons, look at the atomic number:

Example for carbon:

Atomic number: 6

Number of electrons: 6

*Complete the table for the elements with atomic numbers 1-10.

ELEMENT

ATOMIC

PROTONS

NEUTRONS

ELECTRONS

NAME

NUMBER

MASS

Parts Of The Atom Worksheet