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Matter

QuestionAnswer
1. Where are transition metals located on the periodic table? The middle and bottom of the table. Groups 3-15.
2. Where are the least reactive elements on the periodic table? Group 18. The noble gasses. Far right.
3. Where are the most reactive elements on the periodic table? Group 1 and 2. The Alkali and Alkaline Earth Metals. Far left.
4. Where are the metalloids on the periodic table? The zig-zag after the transition metals.
5. Where are the nonmetals on the periodic table? The upper right of the table. Groups 14- 18 and Hydrogen.
6. Where are the metals on the periodic table? Groups 1-15. Along with the two bars below the table. Left of the zig-zag.
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? The 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 cannot be created nor destroyed.
13. What is the definition of density? How tightly packed the atoms of an objects are.
14. What is the formula for density? Mass/Volume= Density. Usually shows up as g/mL.
15. What are the types of physical properties? Density, boiling point, melting point, conductivity, hardness, freezing point, color, odor, size, luster, phase, and solubility
16. What are the types of chemical properties? Combustibility, toxicity, and reactivity.
17. What is the definition of melting point? The temperature at which a solid becomes a liquid. It is the same temperature as the 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 liquid turns into a gas.
21. What is a solute? A substance that is dissolved in another substance.
22. What is a solvent? The liquid in which a solute is dissolved.
23. What is a solution? A homogeneous mixture. Combination of the solute and the solvent.
24. What is a homogenous mixture? A mixture in which all parts are the same. A pure substance.
25. What is a heterogeneous mixture? A mixture in which the parts are different. Can be easily separated.
26. What does the atomic number represent? Number of protons. (Also usually the number of electrons)
27. What does the atomic mass represent? Number of protons and neutrons.
28. What is a noble gas? Row 18 on the periodic table. Least reactive elements.
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? In a chemical equation: Reactants are the substances you have in the beginning of the reaction. Products are what comes out of the reaction.
Created by: krozwood