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matter

TermDefinition
1. Where are transition metals located on the periodic table? Middle / bottom
2. Where are the least reactive elements on the periodic table? The last period (far right)
3. Where are the most reactive elements on the periodic table? alkali metals (far left first period)
4. Where are the metalloids on the periodic table? on the zig-zag line
5. Where are the nonmetals on the periodic table? to the right of the zig-zag
6. Where are the metals on the periodic table? on the left and middle
7. What is the smallest part of an element? an atom
8. What is the smallest part of a compound? a molecule
9. What does a period represent? rows of similar elements (energy levels)
10. What does a group represent? a column of similar elements (valence elec. family)
11. What is the definition of mass? how much matter something has
12. What is the Law of Conservation of Matter? matter can not be created nor destroyed, only changed from one state to another
13. What is the definition of density? the amount of mater in a given area
14. What is the formula for density? p=m/V (usually g/mL)
15. What are the types of physical properties? appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, etc
16. What are the types of chemical properties? combustibility, reactivity, and toxicity
17. What is the definition of melting point? the temperature at which a solid changes to a liquid (same temp as freezing)
18. What is the definition of combustibility? how easily something combusts
19. What is the definition of reactivity? How easily it can react/combine with other elements
20. What is the definition of boiling point? the temperature at which a material changes from a liquid to a gas
21. What is a solute? something that dissolves
22. What is a solvent? something that dissolves something else.
23. What is a solution? A mix of liquids or a liquid containing a solute (homogeneous)
24. What is a homogeneous mixture? a mixture with a uniform composition [pure(as in even)]
25. What is a heterogeneous mixture? a mixture without a uniform composition (easily separated)
26. What does the atomic number represent? the number of protons in an atom
27. What does the atomic mass represent? the approximate number of protons and neutrons in an atom the mass of an atom of a chemical element
28. What is a noble gas? an element with a full valence shell, last group
29. How do you find the number of neutrons? subtract the protons from the mass number
30. What are reactants and products? reactants are what react and the product is what comes from the reaction. (the new substance)
Created by: DespacitoDan