1. Unit 2, Lesson 2: Classifying Matter

2. A Few More Definitions...
Atom: the smallest possible unit of an element that retains the fundamental properties of the element.
Molecule: a cluster of two or more atoms held together strongly by electrical forces.
Ion: an atom or molecule that possesses an electrical charge.
Particle: a general term used to describe a small bit of matter such as an atom, molecule, or ion.

3. Try This! Identify the atoms, molecules, and the ions: NO3- Cl- H2O Ag
5 min
C12H22O11 Cu
CH3CH2OH
Na+

4. Brain Break!

5. Flow Chart Activity
Without looking at your textbook, follow the instructions and complete the activity on today’s handout.
Start by explaining what a flow chart is (eg. trees). Individual, then go over answers - 15 min

6. Components of Solutions
A solution is made up of a solvent and a solute.
The solvent is the component of a solution that exists in the greater quantity.
The solute is the component of a solution that exists in the smaller quantity.
When the solvent is water, the solution is called an aqueous solution.
Tip for remembering: solvent is a longer word than solute. – 5 min

7. Homework:
Pg. 52 #33, 36, 39-41, and 44
10 min