1. Activator – Draw the diagram below and label each blank with the following terms: boiling point, melting point, solid, liquid, gas.

2. Folder Set-Up
When you get a folder, write your name on the small tab at the top and on the front. I will be passing back papers that all need to stay in your folders.
I will be passing back lots of papers today!

3. Properties of Matter – Flammability, Odor, Solubility
September 19, 2017

4. Objective
Students will be able to identify properties of substances such as flammability, odor, and solubility.

5. Connection
Last week we started talking about properties of matter, or characteristics used to describe matter
 melting point and boiling point
Today we are going to learn about three more properties of matter.

6. Solubility
Solubility is a chemical property referring to the ability for a substance to dissolve.
When this happens, it creates a solution, otherwise known as a homogeneous mixture.
Substances that are soluble: salt, sugar
Substances that are insoluble: sand, rice

7. Solubility Solute: the substance that dissolves (salt)
Solvent: the substance that the solute dissolves in (water)

8. Degree of flammability
Flammability is the chemical property for how easily something can burn
Substances are
given a rating for
how flammable
they are.
Rainbow Flames
Rating
Degree of flammability
Examples
Materials that will not burn
water 1
Materials that must be preheated before they will ignite
lubricating oils cooking oils 2
Materials that must be moderately heated or exposed to relatively high ambient temperatures before they will ignite
diesel fuel 3
Liquids and solids that can ignite under almost all temperature conditions
Gasoline   acetone 4
Materials which will rapidly vaporize at atmospheric pressure and normal temperatures, or are readily dispersed in air and which burn readily
natural gas propane
butane

9. Odor
Odor is a property referring to the scent or fragrance of a substance.
This is considered a physical property, because it can be observed without changing the substance.
Some odors are pleasant, some are unpleasant, and some substances have no odor at all.

10. Check for Understanding
_______________ is the property that describes how well a substance dissolves.
Solute
Solubility
Solvent
_________ refers to the substance that is dissolving, and _________ refers to the substance that it is dissolving in.
Solvent; solute
Solubility; solute
Solute; solvent

11. Check for Understanding
Flammability is a property that a substance either has or does not have.
True
False
The more flammable a substance is, the lower the rating it gets on the flammability scale.

12. Check for Understanding
The property of having a scent or fragrance is called ___________.
Odor
Flammability
Solubility

13. Brainstorming
Brainstorm at least three substances that fall into each category:
Flammable
Non-Flammable
Soluble
Insoluble
Has an odor
No odor

14. Exit Ticket Folder Set-Up
Do you think that it is important for scientists to know about the properties of a substance before an experiment? Why or why not?
When you get a folder, write your name on the small tab at the top and on the front. I will be passing back papers that all need to stay in your folders.
Folder Set-Up