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Matter
| Question | Answer |
|---|---|
| 1. Where are transition metals located on the periodic table? | In the middle and on bottom |
| 2. Where are the least reactive elements on the periodic table? | Far right column |
| 3. Where are the most reactive elements on the periodic table? | Far left |
| 4. Where are the metalloids on the periodic table? | On the zigzag line |
| 5. Where are the nonmetals on the periodic table? | Upper right and hydrogen |
| 6. Where are the metals on the periodic table? | To the left of the zigzag |
| 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? | How many valence electrons there are, columns or families |
| 11. What is the definition of mass? | How much matter an object has |
| 12. What is the Law of Conservation of Matter? | No matter is created or destroyed |
| 13. What is the definition of density? | How tightly packed an object is |
| 14. What is the formula for density? | mass/volume (g/mL) |
| 15. What are the types of physical properties? | Color, density, volume, mass, boiling point, melting point, odor, size, hardness, luster, phase of matter, solubility, conductivity |
| 16. What are the types of chemical properties? | Toxicity, flammability, and reactivity |
| 17. What is the definition of melting point? | The temperature at which a substance turns from solid to liquid; same temp as freezing point |
| 18. What is the definition of combustibility? | How flammable a substance is |
| 19. What is the definition of reactivity? | How reactive a substance is |
| 20. What is the definition of boiling point? | The point at which a substance transforms from a liquid to a gas |
| 21. What is a solute? | The substance that is dissolved in a solution |
| 22. What is a solvent? | The substance that dissolves the solute in a solution |
| 23. What is a solution? | Solute and solvent, homogeneous |
| 24. What is a homogenous mixture? | A mixture where all parts are uniformly distributed; pure substance |
| 25. What is a heterogeneous mixture? | A mixture where some parts are more uniform than others; can be easily separated |
| 26. What does the atomic number represent? | How many protons are in an element |
| 27. What does the atomic mass represent? | Protons in an element + neutrons |
| 28. What is a noble gas? | Gas elements on the far right of the periodic table that are very unreactive |
| 29. How do you find the number of neutrons? | Atomic mass - atomic number |
| 30. What are reactants and products? | The before and after in a chemical reaction |