1. Exam 1 review

2. List the 7 diatomic molecules Chemical and physical properties Chemical and physical changes Pure substances Characteristics of matter Groups 1 and 2 elements

3. Leroy is doing an experiment to see how the addition of sugar helps plants grow faster. – What is the dependent variable? – What is the independent variable?

4. Roger measures 30 mL of water into a graduated cylinder. He then drops a rock into 40 mL. What is the volume of the rock?

5. The mass of an object is 120 g. Its volume is 180 mL. Will it float in pure water?

6. The density of lead is 11.342 g/mL. What would be the volume of a 100.0 g sample of this metal?

7. A mechanical pencil has the density of 3 grams per cubic centimeter. The volume of the pencil is 12.6 cubic centimeters. What is the mass of the pencil?

8. 155 g = _______ Kg 160 mg = ______ g 450 cm = ________ mm 569 mL = __________ L

9. 155 g = 0.155 Kg 160 mg = 0.160 g 450 cm = 4500 mm 569 mL = 0.569 L

10. What common object has the mass of about 1 gram? 1 L is about ____ quarts or _____ gallons 1 Kg= ______ pounds A meter is about how many feet long? 5 miles is about how many Km

11. Density sheet answers 1 and 2 done in class 3. 1.76 g/ml 4136.3 g 5 817.6 g 6. 16.5 cm 3 7. 17.63 g 8.2.34 g/ml 9. 47.4 g 10. 0.418 cm3 If your answer is different, just make sure the difference is due to rounding.