Exam 1: Introduction to Chemistry

Observations and Models What is the difference between a hypothesis and a question?

Observations and Models Two golfers are practicing shots around a putting green. Each golfer takes 20 shots. Golfer 1 has 7 shots within 1 meter of the hole, and the other 13 shots are scattered around the green. Golfer 2 has 17 shots that go into a small sand trap near the green and three just on the green near the trap. Which golfer is more precise? Which is more accurate?

The Study of Chemistry Explain chemical properties with an example.

Numbers and Measurements Express each of the following temperatures in ° C.

Focus on Problem Solving Exercises Battery acid has a density of 1.285 g\mL and contains 38.0% sulfuric acid by mass. Describe how you would determine the mass of pure sulfuric acid in a car battery, noting the item(s)you would have to measure or look up.

The Study of Chemistry How can a liquid be distinguished from a fine powder? What type of experiment or observation might be undertaken?

Numbers and Measurements Assuming the numbers given are measurements, carry out the indicated arithmetic operations and give the answer with the correct number of significant figures.