Chemistry

2. it is a nonmetal, its in group 2 with a valence electron of 5, and its atomic# is 7.
3. an air like fluid substance which expands freely to fill any space available, irrespective of its quantity.
5. concluded that atoms are hard, round, and solid balls.
6. the amount of space that a substance or object occupies, or that is enclosed within a container
8. a physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.
9. the temperature at which a liquid turns into a solid when cooled.
11. the kinetic theory of gases describes a gas as a large number of small particles, all of which are in constant, random motion.
15. having a consistency like that of water or oil, flowing freely but of constant volume.
18. a table of the chemical elements arranged in order of atomic number, usually in rows
20. an ancient Greek philosopher who claimed that everything is made up of atoms.
22. firm and stable in shape; not liquid or fluid.
23. occupies space

1. who called the wave- mechanical model
4. the quantity of a particular substance that can dissolve in a particular solvent
7. change from one state (solid or liquid or gas) to another without a change in chemical composition.
10. substances and mixtures which are in a single phase. This is in contrast to a substance that is heterogeneous.
12. a variable whose variation does not depend on that of another.
13. something that is constant and unchanged in an experiment.
14. mixture is a material system made up of two or more different substances which are mixed but are not combined chemically.
16. the temperature at which a liquid boils and turns to vapor.
17. which is the correct value for the measurement based on reliable references.
19. the atom by J. J. Thomson discovered the electron in
21. a quantity that has both a number and a unit.