1. North Strabane Intermediate School
Room 209 and 207

2. Matter and Elements
Matter Elements
 Anything that has mass and  Make up all matter in the
takes up space world
 Describes physical substances  Can be solids, liquids, or
around us gases
 Is made up of elements  Sometimes they mix together
physically
 Can be chemically combined
 Are made of atoms

3. Atoms
 Smallest particles of an element that have the same
chemical properties as the element
 Differ from element to element
 Very, very, very small
 Include:
 Nucleus
 Protons
 Neutrons
 Electrons
Click to go back to question

4. Atomic
Structure

5. Click for a hint Check Answer

6. The Periodic Table of Elements
 Most useful tool for a chemist
 Created by Dmitry Mendeleyev
 Organized in rows by increasing atomic number (has
periods and families)
 Includes information about each element:
 Atomic number
 Element symbol
 Element name
 Atomic mass

7. Periods
 Each row is called a period
 Atomic number increases from left to right across a
row
 Periods get wider as you move down the table
 The first period has only 2 elements (Hydrogen and
Helium)
 There are 7 periods

8. Families
 Columns are grouped
into families (sometimes
called groups)
 Elements in the same
group have similar
properties

9. Classification
 Metals – conduct heat and electricity, shiny when
polished, bend rather than break
 Nonmetals – brittle solids, do not conduct heat or
electricity
 Metalloids – mixture of the two
 Noble Gases – the elements that make up group 18

10. Questions
Click here to view the
Periodic Table of Elements Check Answer

11. Questions
Click here to view the
Periodic Table of Elements Check Answer

12. Follow the directions to create your Acrostic Poem