CHEM 131 Midterm Examination APU

1. Who discovered the atomic theory?

2. Who discovered the law of conservation of mass?

3. A lead ball has a mass of 49.0 grams and a density of 11.3 g / cm 3. What is the volume of the ball?

4. What is the volume in mL of a cube of water with dimensions 11.0 cm × 11.0 cm × 11.0 cm?

5. When the value 98.54 is rounded to two significant figures, the number should be reported as

6. Given the sequence of temps below, which one represents the Fahrenheit boiling, room temp, and freezing points of water, in that order?

7. How should someone classify grape juice?

8. Gallium metal will melt in your hand. Which of the following is a true statement about this process? It represents a _______.

9. If a nickel atom formed an ion, what charge would it have?

10. The elements located in groups 3B through 2B are known as

11. Which of these can be found in the nucleus?

12. What would be the proper way to write the ion formula for acetate?

13. When naming Na 3 PO 4, it cannot be trisodium phosphate. Why?

14. We discussed diatomic molecules in this lesson. Which of these would NOT be classified in that category?