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Matter
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| Question | Answer |
|---|---|
| 1. Where are transition metals located on the periodic table? | Middle and Bottom |
| 2. Where are the least reactive elements on the periodic table? | The far right |
| 3. Where are the most reactive elements on the periodic table? | The far left |
| 4. Where are the metalloids on the periodic table? | zig zag line |
| 5. Where are the nonmetals on the periodic table? | upper right + hydrogen |
| 6. Where are the metals on the periodic table? | Left of 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 electron columns |
| 11. What is the definition of mass? | it is the amount of matter in an object |
| 12. What is the Law of Conservation of Matter? | matter can not be created or destroyed |
| 13. What is the definition of density? | how tightly packed something is |
| 14. What is the formula for density? | mass divided by volume shows as g/mL |
| 15. What are the types of physical properties? | Density, Melting point, boiling point, size, color, hardness, luster.phase of matter, mass , conductivity, solubility |
| 16. What are the types of chemical properties? | Reactivity, combustibility, toxicity |
| 17. What is the definition of melting point? | The temp. which something melts same temp as freezing point |
| 18. What is the definition of combustibility? | The ability for something to catch fire and how easily |
| 19. What is the definition of reactivity? | How reactive a mixture is how easily |
| 20. What is the definition of boiling point? | The point something boils liquid is gas |
| 21. What is a solute? | A substance that is dissolved in another substance |
| 22. What is a solvent? | The liquid that dissolves the solute |
| 23. What is a solution? | substances in a mixture that are evenly distributed , all parts are the same, solute dissolved in solvent |
| 24. What is a homogenous mixture? | Same parts throughout the whole mixture:pure substance |
| 25. What is a heterogeneous mixture? | Mixture that is not the same through out :can be easily separated |
| 26. What does the atomic number represent? | Number of protons usually number of electrons |
| 27. What does the atomic mass represent? | The mass of the atom:protons+ neutrons |
| 28. What is a noble gas? | They do not react with other elements far right least reactive |
| 29. How do you find the number of neutrons? | round atomic mass to nearest whole number (mass number) Subtract the mass number and the Atomic number |
| 30. What are reactants and products? | reactants are the elements or substances that are doing the reaction. Product is what the reaction makes. |