Chem chapter 1
elements, compounds
The two types of matter that are pure substances are ____________________ and ____________________.
analytical
Two scientists are trying to determine the exact nature of the chemicals in a lava flow
inorganic chemistry
A chemistry student is studying the formation of quartz crystals.
analytical
A scientist is using mathematical models to isolate a new chemical process
physical chem
A scientist is working to determine the properties and changes of matter and their relation to energy of a newly discovered mineral. She is working in the field of
Organic chem
A scientist is working to develop better dating methods for substances that contain carbon
biochemistry
A team of scientists is working to discover how an enzyme affects blood cells in sheep.
problem
Applied research is often performed to find the answer to a particular
knowledge
Basic research is performed to increase
product
In a bonfire, oxygen allows wood to combust, leaving behind ashes. In this process, oxygen and wood are the reactants, and ashes are the
compound
Iron and sulfur, when heated, form an iron sulfide that has different properties from either iron or sulfur. The formation of iron sulfide is an example of a ____________________ change.
lives
Technological development is performed to better our
physical
When examining a mineral, hardness and color are two of the properties used for identification. Hardness and color are examples of ____________________ properties.
Chemistry
the study of matter and changes that occur in matter