reactions of matter.
2. Organic Chemistry ANS >>> the study of the structures that contain the element
carbon
3. Inorganic Chemistry ANS >>> the study of all other substances except those that
contain the element carbon
4. Geochemistry ANS >>> the study of the chemical composition of ores, soils, and
minerals of the surface of earth and other planets
5. Measured numbers ANS >>> are numbers you obtain when you measure a
quantity
6. Exact numbers ANS >>> are numbers obtained by counting items
7. Density formula ANS >>> D=m/v
8. Chemical ANS >>> a substance that always has the same composition and
properties wherever it is found
9. Matter ANS >>> anything that has mass and occupies space
10. Pure substance ANS >>> matter that has a fixed or definite composition
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