Online labs include: Mixture Separation Living in a Thirsty World Matter and Change Why it Matters

Chemistry Is a 
Physical Science
Main ideas
Chemistry is the study of matter 
and its processes.
There are several branches of 
chemistry.
(a)
A balance is an instrument used 
to measure the mass of materials. 
(b) 
A sample of DNA placed in a scanning tunneling microscope 
produces an image showing the contours of the DNA’s surface.
Scientific Observations
Figure 1.1
> 
Virginia
standards
CH.1
The student will investigate and 
understand that experiments in which variables 
are measured, analyzed, and evaluated 
produce observations and verifiable data.
CH.1.EKS-1
3
Matter and Change
SecTion 1

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Invisible rays called X-rays can also be used to determine micro-
structures. The patterns that appear can be analyzed to reveal the
arrangement of atoms, molecules, or other particles that make up the 
material. By learning about microstructures, chemists can explain the 
behavior of macrostructures—the visible things all around you.
Main idea