Happy early dismissal!
As you know, we have our Studying Materials Scientifically (SMS) test on Thursday, Dec. 19.
Most of you got part 1 of your Review Sheet on Friday, and some got it on Monday.  You got the next part (Volume Study Guide) yesterday and we've gone over it in class today.

(Period 2 Extra Credit - you didn't get it yet, but you can find it posted on yesterday's blog and answer it by Wednesday for Extra Credit)
 Period 1 - Correct Volume Study Guide answer to question 6 is: 6, 1, 5, 3, 2, 4.
Other periods: check out the slide shows at the top of my Links list!!! Good learning tools!
Below is another part of your SMS Study Guide.  Tomorrow, please bring in the written answers to these questions:

1.     If you have two bars of silver colored metal of the same volume, how could you tell which one was iron and which was aluminum? (choose one)

a.    Aluminum will feel heavier

b.    Iron will react in hot sulfuric acid

c.    Iron will feel heavier

d.    Iron will feel lighter

2.    Which of the following is evidence that one substance is chemically reacting with another?  When the substance(s):

a.    Gives off light, smoke, or odor;

b.    Gets hotter or colder;

c.    Gives off bubbles, gas, or a precipitate (causes solids to fall to the bottom);

d.    When the properties of the substances become different.

e.    All of the above.

    

READ THIS: Look at the measurements for this rectangular cube: (shown in text here in case they don't show up on the blog: L = 5 cm, W =3cm, H = 4 cm, mass = 180g.

3.    Will this cube float or sink in water (density of water = 1 g/cm³)? Explain why. (Hint: if you can’t answer it, answer the next 3 questions, then come back to this).

4.    What is the volume of this cube? Remember: V = L x W x H (choose one)

a.    23 cm

b.    60 cm²

c.    60 cm³

d.    180 g

5.    What is the mass of this cube?  (choose one)

a.    23 g

b.    60 g

c.    60 cm³

d.    180 g

6.    What is the density of this cube? Remember: D = m/v  (choose one)

a)    .33 g/cm³

b)    3 g/cm³

c)    180 g/cm³

d)    15 g/cm³

7.    The MSDS (Material Safety Data Sheet) below is for a common ice-melting product.

Material Safety Data Sheet	Potassium chloride MSDS
Physical and Chemical Properties	Color: White flakes or crystals. Physical state and appearance: Solid. Odor: Odorless. Taste: Saline. (Strong.) Solubility: Soluble in cold or hot water. Very slightly soluble in alcohol. pH (1% soln/water):  7 Boiling Point: 1420°C (2588°F) Melting Point: 770°C (1418°F)
Toxicity ( Health)		1	Reactivity: 0 Specific hazard:
Flammability:		0
Health Effects	Potential Acute Health Effects: Slightly hazardous irritant through contact with skin or eyes, ingestion, or  inhalation. Potential Chronic Health Effects: Substance may be toxic to blood, cardiovascular system. Repeated or prolonged exposure can produce organ damage.
First Aid Measures	Eye Contact: In case of contact, flush eyes immediately with plenty of cold water for at least 15 minutes. Get medical attention. Skin Contact: Wash with soap and water. Cover the irritated skin with an emollient. Get medical attention if irritation develops. Inhalation: If inhaled, remove to fresh air. If not breathing or breathing is difficult, give artificial respiration or oxygen. Ingestion: Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention if symptoms appear.
Handling and Storage	Keep container tightly closed. Keep container in a cool, well-ventilated area, away from incompatibles such as oxidizing agents, acids, moisture. Use exhaust ventilation. Personal Protection: Safety glasses, gloves, lab coat. Be sure to use approved/ certified dust respirator or equivalent. Personal Protection if Large Spill: Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used to avoid inhalation of the product. Consult specialist BEFORE handling this product.
Waste Disposal:	Waste must be disposed of in accordance with federal, state and local environmental control regulations.  Place in a waterproof container.

8.   8. What does this product look like? _____________________________________________________________

9.    If using chemicals or materials in a science lab, what 3 precautions would you take?

10. What would you do if you got some on your eyes or skin? _________________________