Download File - Fern Creek Chemistry

Name:_____________________________
Date:______________________ Pd:_____
Elements, Atoms, Particles & the Periodic Table
Guided Notes
Elements & Atoms
All elements are composed of tiny indivisible particles called ________________.
List at least three different elements by name and symbol:
1. ______________ & _____
2. ______________ & _____
3. ______________ & _____
Atoms of the same element are ________________. This means that the atoms of any one element are
_________________ than those of any other element.
Atoms of different elements can _______________ ___________ together, or can _________________
______________ in simple ratios to form compounds.
Atomic Structure
What are the names of the three primary particles that make up an atom?
_____________________
_____________________
_____________________
Protons
 ___________ Charged (+1)

Mass of ______________

Found in the ________________

The number of protons determines the ATOMIC NUMBER of an atom.

The number of protons DEFINES the element! (These are BOLD because they are important!)
How many protons does Carbon have? _____________ How many does Helium have? ______________
Which element has 11 protons? __________________
Neutrons
 ______________ Charge (0 Charge)

Mass of _______________

Found in the ________________

The number of neutrons PLUS the number of protons EQUALS an atom’s atomic mass.

# of neutrons + # of protons = atomic mass

The number of neutrons can vary!

Isotope = ______________________________________________________________________

Draw the two most common isotopes of Carbon (C) with Mr. Redies:
Electrons
 ______________ Charge (-1)

Mass of ______________ (has almost no mass)

Found in energy levels or ____________.

For right now, the # of electrons = ________________

The first energy level can hold _____ electrons, later levels can hold _____.

How many electrons does Gold (Au) contain?
1. Find the element on the periodic table: Row = _________ Column:_________
2. What is the atomic number (big number)? _________________
3. How many protons does it have?_____________
4. How many electrons must it also have?____________
Periodic Table
Elements on the periodic table are arranged by ____________ ______________, or the number of
________________.
The periodic table gives the average _________ __________, of the most common isotope.
You can use the periodic table to determine how many protons, neutrons, & electrons each atom has.