Physical Science
Unit 2: Classification of Matter
What is the difference between salt and soda?
Monday:
Objectives:
Discussion:
Activity:
HW:
Tuesday:
Objectives:
Discussion:
Activity:
Wednesday:
Objectives:
Activity:
HW:
Thursday:
Objectives:
Illustrate the difference between a molecule and an atom.
Classify matter as a pure substance (element or compound)
Substances
Element or Compound WS
Get tests signed
Finish WS
Illustrate the difference between a molecule and an atom.
Classify matter as a mixture (homogeneous/ heterogeneous) on the basis of its structure and/ or
composition
Mixtures
Element, compound and mixture concept map
Illustrate the difference between a molecule and an atom.
Classify matter as a pure substance (element or compound) or as a mixture (homogeneous/ heterogeneous)
on the basis of its structure and/ or composition
Can you classify matter? WS, Can you classify matter activity
Study for Celebration
Demonstrate an understanding of element, compound and mixtures through a Celebration.
Atoms vs. Molecules
A Worksheet
Illustrate the difference between a molecule and an atom.
Background information:
An atom is the basic building block of matter. It is the smallest particle of an element that can enter into a chemical change.
An atom consists of a central nucleus and electron clouds outside the nucleus. A symbol for the element represents the atom.
Examples are H, Al, Zn, Hg.
A molecule is the smallest part of a covalent substance that can exist free and still have the composition and properties of that
substance. Molecules are always composed of more than one atom. Examples are O 2, H2, H2O, C 6 H12 O6 , NH3 .
Exercise:
Symbol or Formula
Atom or Molecule?
Is it on the Periodic
Number of different
Table?
kinds of atoms
Atom or Molecule?
C12 H22 O11
H2 O2
O2
Ne
N2
CO2
SiO2
C
He
C2 H4 Cl2
Ag
F2
SO3
S8
Fe
Questions:
1.
What is true about the composition of all of the elements in the table?
2.
What is true about all of the substances you labeled molecules?
3.
Which substances in the table do NOT represent molecules?
4.
If a substance is listed on the Periodic Table is it an element or a compound?
Matter
Pure
Substance
Mixture
Element
Draw a picture
Draw a picture
Draw a picture
Draw a picture
Give 3 examples
Give 3 examples
Give three examples
Give three examples
Name: _______________________________________________
Date: ________________________
DATA TABLE
St # Name of Sample (chemical Symbol or
Physical Properties
Phase of
Element,
name, unless not given)
Formula
(color + min of 1
Matter (gas,
Compound or
(if present)
more)
liquid, solid)
Mixture (E, C,
or M)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
If Mixture,
homo- or
hetero-