ATOMS- 1. an atom is the smallest part of a pure substance which retains the _ of that pure substance

COMPOUNDS-
2. atoms of each element are essentially the _

LAW OF DEFINITE PROPORTIONS-
3. this law states that every molecule of a substance contains the _ number of atoms of each element

SOLUTIONS-
4. Solutions are special types of mixtures which are _ so they often can be confused as pure substances

STATES OF MATTER-
5. how would you describe the change in arrangement of particles as heat energy and temperature increases?

6. why does the temperature remain constant during a phase change even though the substance is absorbing heat energy?

7. (number six only)