Back to Basics: Chemistry 101 - Atoms, Acids, Bases, and More!

2. Chemistry: Back to Basics

3. Atoms of the Periodic Table

4. Acids and Bases

5. MIX it Up!

6. Bond With Us

7. Physical & Chemical Properties and Changes

8. Chemistry: Back to Basics Atoms and the Periodic Table Acids and Bases MIX it Up! Bond With Us Physical & Chemical Properties and Changes $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 $500

9. An ion is formed when this occurs.

10. An atom gains or loses an electron

11. In an atom, the protons are equal to the number of ________, as well as the ________ number.

12. Electrons; atomic

13. The law of conservation of mass states that this is never created or destroyed throughout a chemical reaction.

14. Matter

15. The properties of an atom all are determined by the total number of these in an atom. They are also the same for every element in the same group.

16. Valence electrons

17. Name the three subatomic particles, their charges and their location within the atom.

18. Proton (+), in nucleus Electron (-), orbits nucleus Neutron (neutral), in nucleus

19. These elements make up the majority of the Periodic Table.

20. Transition Elements

21. These elements are the most reactive metals on the Periodic Table.

22. Group 1: Alkali Metals

23. Metalloids share properties with these two types of elements.

24. Metals and Non-metals

25. Describe three properties associated with metals on the Periodic Table.

26. Ex: Solids, have luster, are ductile & malleable, are good conductors of heat & electricity

27. Which group on the Periodic Table do elements in Group 17 tend to bond with? Why is this?

28. They bond with Group 1 (Alkali metals) because they only need one more electron to become stable.

29. What tool would you use to find the pH of a substance?

30. Litmus, or pH paper

31. What does it mean for a substance to be neutral? Give an example of a neutral substance.

32. It has a pH value of 7; Water

33. Acids have a range between these two numbers on the pH scale, while bases fall within this range.

34. Acids are between 0-6.9 Bases are between 7.1-14

35. Describe the difference in taste between acids and bases, and describe when it would be okay to eat them.

36. Acids taste sour, while bases taste bitter. You can only eat them when they are weak.

37. Think back to the acids and bases lab - which colors represent acids and bases on the pH scale?

38. Acids are red-orange, while bases are blue-green

39. Is the substance Na2S (Sodium sulfide) a mixture, solution or a compound? How do you know?

40. A compound because it cannot be separated using physical means.

41. Describe the difference between a heterogeneous and homogeneous mixture.

42. Heterogeneous mixtures are unevenly mixed, while homogeneous mixtures are evenly (uniformly) mixed.

43. In a saltwater solution, what is the solute, and what is the solvent?

44. Solute - (is dissolved) salt Solvent - (does dissolving) water

45. This physical property is the measure of how well a solute can dissolve in a solvent.

46. Solubility

47. Describe the process you would use to separate a mixture of saltwater, sand, gravel, and iron filings. (Be sure to use proper terminology!)

48. Iron filings - Magnetism Sand, gravel - various sizes of filters in Filtration Saltwater - Evaporation

49. Give the chemical formulas for water and carbon dioxide.

50. Water = H2O Carbon dioxide = CO2