Chemistry crossword puzzle

7. / A pure substance that cannot be broken down into any other substances by chemical or physical means.
9. bond / a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
11. / Anything that has mass and takes up space.
12. / Has a definite volume but no shape of its own.
15. / When a liquid changes to a gas below its surface as well as at the surface.
16. Properties / A characteristic of a pure substance that can be observed without changing it into another substance.
18. Bond / A force of attraction between two atoms.
19. Mixture / A mixture in which pure substances are unevenly distributed throughout the mixture.
22. energy/ The energy of electrically charged particles moving from one place to another.
24. energy / The total energy of all of the particles in an object.
25. / A pure substance made of two or more elements chemically combined in a set ratio.

1. / A material that can easily flow
2. The ability to do work or cause change.
3. change / A change in matter that produces one or more new substances
4. Mixture / A mixture in which substances are evenly distributed throughout the mixture.
5. / A fluid that can change volume very easily.
6. / The basic particle from which all elements are made.
8. / Made of two or more substances that are together in the same place but are not chemically combined.
10. / A single kind of matter that is pure and has a specific set of properties.
13. / A measure of the average of random motion of particles of matter.
14. of conservation of matter / The fact that matter is not created or destroyed in any chemical or physical change.
17. / Groups of two or more atoms held together by chemical bonds.
20. point / The characteristic temperature in which melting occurs.
21. / An example of a homogeneous mixture.
23. / Has a definite shape and a definite volume.