Mixture and Solution

2. any group of elements that conducts heat and electricity has a shiny luster and is flexible
4. anything that has mass and takes up space
6. the mass of an object divided by its volume
12. the center of an atom that has most of its mass
13. a particle in the nucleus an atom that carries one unit of positive electric charge
14. how hot or cold something is
16. a particle in the nucleus of an atom that has no electric charge
17. the process of changing directly from a solid to a gas
18. when a solid substance is no longer visible
20. a substance that is dissolved by another substance to form a solution

1. a measure of how gravity pulls on an object
3. when 2 substances go together but can return to it original substances
5. when particles leave a liquid and become a gas
7. a particle in the space outside the nucleus of an atom that carries out one unit of negative charge
8. a type of mixture in which the particles of one material are scattered through another and block the passage of light without settling out
9. a mixture with 2 substances and cant return to its original substances
10. the amount of matter in a solid liquid or gas
11. the smallest unit that make up matter
15. the smallest unit of matter
19. the amount of space an object takes up