E2.012 & E2.014 – Chemical & Physical Changes
OWL Introductory Chemistry: An Active Learning Approach
Cracolice and Peters
07th Edition
Determine if each item is a chemical or physical change.
Determine if each item is a chemical or physical change.
Determine if each items is a pure substance, a homogeneous mixture or a heterogeneous mixture.
Determine if each pure substance is an element or a compound.
Three items are given, are they endothermic or exothermic?
The half life (in days) of a substance is given. You begin with x mg of the substance. Determine how many mg remain after x days pass.
Your numbers will vary.
The half-life of a radioactive nuclide is given (in hours). Determine the percentage lost after x minutes.
Your numbers will vary.
The mass of a radioactive sample decays from x micrograms to x micrograms in a given number of years. Determine the half-life.
Your numbers will vary.
The half-life of a radioactive sample is given (in hours). The sample decays from x micrograms to x micrograms. Determine how many hours this will take.
Your numbers will vary.
The half-life of carbon-14 is given. An artifact made of wood has a given ratio of 14C to 12C. How old is the artifact in years?
Your numbers will vary.
A cloth found in Jerusalem shows x units of radiation. A living version should have x units. The half-life is also given. Is it possible for this cloth to come from this era? How old is the cloth?
Your numbers will vary.