8th Graders: Thank you for being responsible, respectful students last week. Congratulations to the basketball teams - great job - aren't God's gifts wonderful when you work with others using them appropriately!!

REMINDERS
PLEASE Bring $2.00 for Natalie for January
VERY IMPORTANT 8th Grade Parents' Meeting 6pm Monday, Jan 31st
Sign for Catholic Schools Week Mass: Permission Slip and Drivers

Calendar of Weekly Events
Saturday, Jan 29th: 5pm Mass at St. Patrick's Church to begin Catholic Schools Week - all student are asked to attend in uniform to thank the parishoners of OLM/St. Patrick Parish for their support of Our Lady of Mercy School throughout the years.

? of the Day: Today, January 26th, is Australia Day. This commemorates the arrival of the first official British fleet in Australia in what year and how is this connected to our country's history? Very interesting!

8th GRADE HOMEWORK
Religion:
U.S. History: Constitution book: Read p.4 Answer all questions & sa.
Physical Science: Study: Test Thursday [see study guide below]
Algebra
Keeler: Written Exercises p.192 #2-46 every 4th even, all evens=EC
Tyler: See Mrs. Tyler's Blog
English: See Miss Pedrozo's Blog

7th GRADE HOMEWORK
World History:
Life Science: Use study guide to diagram and study for Test Thursday

8th Grade Science Test Study Guide
Ch. 4. Elements, Compounds, Mixtures
S.1. Elements:
Vocabulary
~ 109
Pure substances: all particles in substance identical - homogeneous
Each with unique set of characteristic properties
Most combined in nature – chemically react with water or oxygen
except: gold, copper, sulfur, neon, carbon
3 groups - classified by properties: p.85
metals
nonmetals
metalloids
know properties, uses and examples of each
S.2. Compounds
Most common substance
Pure substance: all particles in substance identically made of 2 or more elements chemically combined in exact ratio - homogeneous
Unique set of properties that are different from the original elements properties
Can ONLY be separated CHEMICALLY
Know uses in industry; know examples: water, salt, sugar (glucose), calcium phosphate, ammonia, carbon dioxide, carbon monoxide, etc.
S.3. Mixtures
Vocabulary + saturated/ unsaturated, dilute
Combination of 2 or more substances
physically combined
in no particular ratio
that retain the properties of the original substances
5 methods of physically separation p.89
evaporation
distillation
magnetism
centrifuge
filtration
3 types :
Solutions
Appears to be single substance – homogeneous
Particles small do not settle out
2 or more substances distributed evenly throughout mixture
amount of solute dissolved in solvent = concentration = grams/mL
concentration saturated when cannot dissolve any more solute in solvent
solubility increased by mixing, heating, crushing unless dissolving gas, then solubility decreased by heating p.91
separated by evaporation and distillation
know examples: air, soda, salt water, sugar water,
brass, steel
and method to calculate concentration
Suspensions
Particles of 2 or more substances mixed together but
large enough to settle out – heterogeneous
Scatter or block light
Separated by filtration
Know examples: muddy water, salad dressing, medicines
Colloids
Have properties of solutions and suspensions
2 or more substances physically combined
particles disperse light but not heavy enough to settle out
separated by centrifuge
know examples: milk mayonnaise, stick deodorant, gelatin, whipped cream


** WILL BE AVAILABLE IN CLASS **