Chemistry 111 Chapter 1 Exam 158 Questions with Verified Answers
Define science. - CORRECT ANSWER Knowledge; Specifically, knowledge gained through experience or experiment (empirical knowledge).
Science is both an activity and the result of the activity
Define chemistry. - CORRECT ANSWER T...
Chemistry 111 Chapter 1 Exam 158 Questions with Verified
Answers
Define science. - CORRECT ANSWER Knowledge; Specifically, knowledge gained
through experience or experiment (empirical knowledge).
Science is both an activity and the result of the activity
Define chemistry. - CORRECT ANSWER The study of matter and its changes and
interactions with other matter and with energy.
Define scientific method - CORRECT ANSWER Investigations that are guided by
theory and earlier experiments.
Define hypothesis. - CORRECT ANSWER A possible explanation for an event.
Define law - CORRECT ANSWER A statement that summarizes a large number of
observations.
Define theory - CORRECT ANSWER An explanation of the laws of nature.
Define matter. - CORRECT ANSWER Anything that has mass and takes up space
Define mass. - CORRECT ANSWER The amount of matter in an object
Define weight. - CORRECT ANSWER The force of attraction between an object and
another object; is dependent upon mass.
Define property. - CORRECT ANSWER Anything observed or measured about a
sample of matter.
Define physical properties. - CORRECT ANSWER Properties that can be measured
without changing the composition of the sample.
, Give examples of physical properties. - CORRECT ANSWER Mass, density, color,
melting point
Define physical change. - CORRECT ANSWER A change that occurs without
changing the composition of the material.
Give examples of physical change. - CORRECT ANSWER Freezing and melting
Define chemical properties. - CORRECT ANSWER Properties that describe the
reactivity of a material.
Give examples of a chemical property. - CORRECT ANSWER Methane burns in the
air (Flammability); lead is toxic
Define chemical change. - CORRECT ANSWER At least part of the material is
changed into a different kind of matter.
Give an example of a chemical change. - CORRECT ANSWER Burning methane in
air produces carbon dioxide and water.
Matter can be divided into what two types? - CORRECT ANSWER (Pure)
substances and mixtures
Define substance. - CORRECT ANSWER A material that is chemically the same
throughout. A substance cannot be separated by physical methods
What are the two types of substances? - CORRECT ANSWER Elements and
compounds
Define elements. - CORRECT ANSWER Cannot be broken down into simpler
substances. Ex: Fe, O
Define compounds. - CORRECT ANSWER Can be broken down into elements. Ex:
H2O
Define mixture. - CORRECT ANSWER Matter that can be separated by physical
methods.
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