2SAS pg.130 #1-12

1. 

a. physical 

b. chemical

c. chemical

d. physical 

2. 

a. physical 

b. physical

c. chemical  

d. chemical 

3. 

a. chemical 

b. chemical 

c. physical 

d. phsyical 

4. 

a. physical

b. physical 

c. chemical 

d. physical 

5. 

4a) Athough the apple appears to be brown the apple itself remains the same. 

4b) Although the flashlight batteries loose their charge the flashlight itself remains the same. 

4c) Because the clothing changes into a new substance one without oil. 

4d) Although italian dressing seperates over time the dressing itself remains the same. 

6. Put oven rack in middle position and preheat oven to 375°F. Line 2 large baking sheets with parchment or wax paper.

Whisk together flour, baking soda, and salt in a small bowl.

Beat together butter and sugars in a large bowl with an electric mixer at high speed until pale and fluffy, 2 to 3 minutes. Lightly beat 1 egg with a fork in a small bowl and add 1 3/4 tablespoons of it plus 2 remaining whole eggs to butter mixture, beating with mixer until creamy, about 1 minute. Beat in vanilla. Reduce speed to low and mix in flour mixture until just blended, then stir in chips.

Scoop 1/4 cup batter for each cookie, arranging mounds 3 inches apart, on 2 baking sheets. Flatten mounds into 3-inch rounds using moistened palm of your hand. Form remaining cookies on additional sheets of parchment.

Bake, 1 sheet at a time, until golden, 13 to 15 minutes. Transfer cookies to a rack to cool and continue making cookies in same manner using cooled baking sheets.

7) 

a. metals

b. nonmetal

c. nonmetal

d. metal

8) 

a. metal

b. metalloid

c. nonmetal

d. metal

9) 

1. Boron (B)

2. Sillicon (Si)

10)

a. will scatter

b. not scatter

c. scatter

d. not scatter

11) 

1. They conduct electricity.

2. They don't bend, which causes them to scatter.

12) 

1. They are durable (don't bend).

2. Some are not as chemicallly reactive as others.

3. They last a long time.