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Matter

QuestionAnswer
1. Where are transition metals located on the periodic table? in the center and the bottom
2. Where are the least reactive elements on the periodic table? far right
3. Where are the most reactive elements on the periodic table? far left
4. Where are the metalloids on the periodic table? along the zigzag
5. Where are the nonmetals on the periodic table? upper right and hydrogen
6. Where are the metals on the periodic table? left of the zig zag
7. What is the smallest part of an element? atom
8. What is the smallest part of a compound? molecule
9. What does a period represent? energy levels; rows
10. What does a group represent? number of valence electrons (also called a family); columns
11. What is the definition of mass? the amount of matter in an object
12. What is the Law of Conservation of Matter? matter is neither created nor destroyed
13. What is the definition of density? how tigthly packed something is; mass/volume
14. What is the formula for density? mass /volume usually shows up as g/mL
15. What are the types of physical properties? color, odor, phase change, melting point, mass, boiling point, solubility, luster, hardness, conductivity, and density
16. What are the types of chemical properties? flamability, toxicity, and reactivity
17. What is the definition of melting point? the temperature at which a substance changes from solid to liquid; same temperature as freezing point
18. What is the definition of combustibility? the ability to burn
19. What is the definition of reactivity? the ability for a substance to chemically combine with something else
20. What is the definition of boiling point? the temperature at which a substance changes from liquid to gas
21. What is a solute? a substance that is disslolved in liquid
22. What is a solvent? liquid that becomes a solution by dissolving a solid, liquid, or gas
23. What is a solution? two substances evenly mixed together
24. What is a homogenous mixture? a solid, liquid, or gas mixture that has the same proportions of it's components throughout any given example; pure substance
25. What is a heterogeneous mixture? mixture made of two or more substances that are combined together but not dissolved together; easily seperated
26. What does the atomic number represent? number of protons
27. What does the atomic mass represent? number of protons plus neutrons
28. What is a noble gas? the least reactive elements on the periodic table; far right
29. How do you find the number of neutrons? round the atomic mass to the nearest whole number then subtract the atomic number from the atomic mass
30. What are reactants and products? reactants (left) are what you have in the begining of a chemical equation and products (right) are what comes out of the reaction
Created by: AnnaMckenzee