1. Critical and Non-Critical information
Tuesday, 9/ Day 2
Agenda
1. Please have these
Items on your desk.
Science Starters
Sheet
Reading
Note
Card
Phase
Change
W.S.
Critical and Non-Critical information
2- Fill out your Agenda.
What are the top 5 critical ideas that are on your notecard? Share with your shoulder partner.
Put a star by the non-critical answers that you and your shoulder partner have the same.
Whole group: Highlight the answer on your notecard that you have the same as shown under the document camera.

2. Table of Contents Update
Page /13 Mixtures & Solutions
(Solute/Solvent)

3. MATTER Elements Compounds Homogeneous Heterogeneous Pure Substances
Mixtures
Elements
Compounds
Homogeneous
Heterogeneous
Particle:
Atom
Ex:
O, H, Na, C
Particle:
Molecule
Ex:
H2O, NaCl,
CO2
Parts not visible, evenly mixed
Ex: Salt water, air,coffee
Visibly different parts
Ex: Salt + pepper, Water + sand

4. PURE SUBSTANCES Single kind of matter Specific composition
Specific Properties
Elements and Compounds
Examples:
CO2
Water
Gold

5. ELEMENTS Most basic form of matter Cannot be seperated or broken down
116 elements in the Periodic Table
Represented by symbols
O, H, Fe, Au, He, Ne, C
Smallest particle - atom

6. Carbon (Coal and diamonds)
Examples
Carbon (Coal and diamonds)
Mercury
Oxygen

7. Compounds 2 or more elements chemically combined in a set ratio
Can only be separated by chemical methods electrolysis of water
Represented by a formula
Smallest particle- molecule

8. Examples water salt (sodium chloride) ammonia (NH4)
rust (iron oxide) chalk (calcium carbonate) sugar (glucose)

9. MIXTURES
2 or more substances, combined, but NOT chemically
Can be separated by physical means

10. Homogeneous mixtures Examples: Air Solutions (salt water) Alloys
Evenly distributed particles
Particles NOT visible
The prefix: "homo"- indicates the same
Have the same uniform appearance and composition throughout
Examples:
Air Solutions (salt water) Alloys

11. Heterogeneous mixtures
Visibly different parts
The prefix: "hetero"- indicates difference
Examples:
Salt and pepper
Rice
Soup
Pizza
Sulfur and iron

12. Mixtures and Solutions
Solute and Solvent

13. Definitions
Solute- The part of a solution present in a lesser amount and dissolved by the solvent.
Solvent-The part of a solution that is present in the largest amount and dissolves a solute.

14. Mixtures Homogeneous mixtures Pure substances Solution
Heterogeneous materials - can see two parts
Homogeneous materials can see only one thing - one set of properties
Mechanical Mixture
Homogeneous mixtures
They’re mixed together so well you only see one thing – it looks pure but it isn’t
Pure substances
You can only see one thing because there is only one kind of particle in it.
Solution

15. Review Solutions Are solutions homogeneous or heterogeneous?
Are solutions mixtures or pure substances?
Mixtures
What kind of states can a solution be?
Solid, liquid, or gas
What are the two “s” words that every solution must have?
A solute and a solvent

16. In a salt water solution…
Is salt the solute or the solvent?
Solute
Is water the solute or the solvent?
Solvent
What does the solute do?
Gets dissolved
What does the solvent do?
Does the dissolving

17. A Salt Water Solution
Solute (salt)
Animation
Solvent (water)

18. Dissolving

19. Solution Worksheet solute solute solute solute solute solute solute
solvent
solvent
solvent
solvent
solvent
solvent
solvent
solvent

20. Solution Worksheet SOLUTION solute solute solute solute solute solute
8. Minerals Water Hard Water
9. Water Sugar Maple Syrup
10. Acetic Acid Water Vinegar
11. Salt Water Ocean Water
12. Zinc Copper Brass
13. Water Air Humid Air
solute
solute
solute
solute
solute
solute
solute
solute
Solution Worksheet
solvent
solvent
solvent
solvent
solvent
solvent
solvent
solvent