Exam 1: The Science of Chemistry

Fill in the blanks: -A shrewd but tentative initial explanation for a relatively small set of observations is best described as a ______________________________.

Indicate whether each of the following statements represents a fact, a scientific law, or a hypothesis. -The volume of a sample of gas increased as its temperature increased.

Indicate whether each of the following statements is true or false. - A theory is subject to modification in light of new experimental observations.

Identify whether each of the following statements is a theory, hypothesis, observation or law. -A pure substance has a fixed, definite composition.

Chemistry is a scientific discipline which ________.

Match the definitions below with the terms at the bottom. -________ A valid observation about some phenomenon

Chemistry, physics, and geology are considered physical sciences because they involve the study of ________.

Fill in the blanks: -A ______________________________ is based on further experimental results that have either proven or disproven a set of initial observations.

Which of the following is an example of a scientific discipline that involves the study of living organisms?

Which of the following is a biological science?

Which of the following is the most important to chemical discovery?

Explain the difference between: -A hypothesis and a theory

Indicate whether each statement is a -A micrometer ( $\mu$ m) is larger than a nanometer (nm)

Identify whether each of the following statements is a theory, hypothesis, observation or law. -A candle burns more brightly in pure oxygen than in regular air.

Indicate whether each statement is a -The ocean water in Miami, FL contains more salt than water in Galveston, TX

Indicate whether each of the following statements represents -A strip of magnesium ribbon is 1.24 centimeters in length.

Indicate whether each of the following statements is true or false. - A hypothesis is a statement of fact concerning a natural law.

Explain the difference between science and technology.

A researcher studies the behavior of a fixed amount of gas under constant pressure conditions in a balloon with the following results. Experiment 1: At a temperature of 75 K, the gas occupied a volume of 5.0 liters. Experiment 2: At a temperature of 150 K, the gas occupied a volume of 10.0 liters. From this data one can generalize that as the temperature of the gas increases,

Indicate whether each of the following statements is true or false. - A scientific law is a generalization that summarizes information about natural phenomena.