Vocab Unit 1

4. An element that has some characteristics of metals and nonmetals (B, Si, Ge, As, Sb, and Te)
5. Depends on the amount of matter
8. The direct solidification of a vapor by cooling
9. Type of compound in which bond are covalent bonds
11. Any substance with definite composition
13. Does not depend on the amount of matter
14. Substance made of two or more types of atoms that are chemically bonded
16. Measure of the amount of matter
17. Not uniform in composition, visible parts
19. Relates to a substances ability to undergo changes that transform it into a different substance
21. Characteristics that can be observed or measured without changing the identity of a substance
24. When liquid is poured off after solid has settled to bottom
25. Machine that spins a sample very quickly so that components with different densities will seperate
26. Anything that has mass and takes up space

1. Pure substance made of only one type of atom
2. Uniform in composition, no visible parts
3. Where the liquid portion is evaporated off to leave solid
6. Smallest unit of an element that keeps the properties of element
7. Used to seperate mixtures because different parts move quicker on paper than other
10. The direct vaporization of a solid by heating without passing through the liquid stage
12. Element that is a good conductor of electricity, most are solids, they are malleable and ductile
15. An element that is a poor conductor of heat and electricity, many are gases at room temperature
18. Blend of two or more types if matter, can be seperated by physical means
20. Solid part is trapped by filter paper and the liquid part runs through the paper
22. The study of the composition, structure, and properties of matter, the changes they undergo, and the energy changes that accompany these changes
23. Every sample has the same composition and same properties