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