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Matter
| Question | Answer |
|---|---|
| 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. |