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Chem question finals

Chapter 1 questions

QuestionAnswer
A scientist is working in the lab, with compounds containing carbon. She is most likely working in the field of... organic chemistry
The branch of chemistry called analytical chemistry most likely would be used in determining the... chemical composition of a new substance
A scientist is working with mathematical and computer models to learn about the principles at work in a chemical reaction. He is working in the field of... theoretical chemistry
Research that is carried out for the sake of increasing knowledge, such as research into the properties of a substance, is considered to be... basic research
A scientist is working to improve a product that uses fiber optics. This is an example of... applied research and technological development
To find a safer chemical for industrial purposes, a scientist is working with chemicals that do not cause depletion of ozone in the atmosphere. This is an example of... applied research
The smallest unit of matter that retains the properties of that matter is... an atom
An element is... a pure substance made up of only one kind of atom
An example of extensive property of matter would be... volume
An example of intensive property of matter would be... density
An example of a physical change of matter would be... water evaporating
Which state of matter is composed of atoms that have lost many of their electrons? plasma
An example of a chemical change of matter would be... vinegar combining with baking soda to produce carbon dioxide
A homogeneous mixture is one that... is uniform in composition
An example of a heterogeneous mixture would be... chunky peanut butter
What is the difference between a mixture and a compound? Mixtures can be separated by physical processes.
What is an example of a pure substance? water
Homogeneous mixtures are also called solutions
At sea level, water boils at 100*C. This is an example of a... physical property
In general. which properties are common to elements within a single group on the periodic table? chemical properties and ability to bond to other atoms
The horizontal rows on the periodic table are called... periods
Which property would be least helpful in determining whether a substance is metal or a nonmetal? luster
Noble gases are generally unreactive
Created by: christinav
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