Chemistry Part 1

1. a change in the form or physical properties of a substance without a chemical reaction or the creation of a new substance
3. any substance that occupies space and has mass
7. a change in the chemical composition or make-up of a substance
8. subatomic particles with a positive charge
9. the smallest chemical components (particles) of an element; structures that make up the element and have the same properties of the element
11. the simplest form of matter; cannot be broken down into a simpler substance without a loss of identity
13. a chemical combination of two or more atoms in definite (fixed) proportions

2. compounds; a chemical combination of two or more atoms of different elements in definite (fixed) proportions
4. molecules containing two or more atoms of the same element in definite (fixed) proportions
5. subatomic particles with a negative charge
6. characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the substance
10. subatomic particles with no charge
12. science that deals with the composition, structures, and properties of matter and how matter changes under different conditions