1. 2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Element, Compound Mixture Models & Formulas BondingEquationsMisc

2. What part of the atom is involved in bonding?

3. electrons 1 pt

4. How can a solute be made to dissolve faster in a solvent?

5. crush, stir, heat 2 pt

6. What are general characteristics of a base?

7. bitter, slippery, high pH 3 pt

8. When a solute can not be dissolved anymore in a solution at a given temperature and pressure, the solution is said to be this.

9. saturated 4 pt

10. Which substance decreases in solubility when the temp. goes up?

11. Ce 2 (SO 4 ) 3 5 pt

12. A molecule of potassium sulfate has 2 potassium (K) atoms, 1 sulfur (S) atom and 4 oxygen (O) atoms. What is its chemical formula?

13. K 2 SO 4 1 pt

14. A molecule of silver bromate is composed of 3 oxygen atoms (O), 1 bromine atom (Br), and 1 silver atom (Ag). This is the chemical formula for silver bromate.

15. AgBrO 3 2 pt

16. What is the formula for dinitrogen tetroxide?

17. N2O4N2O4 3 pt

18. What is the formula for the following substanace? Tetraphosphorous decoxide

19. P 4 O 10 4 pt

20. Which of the following is not written correctly? CaCl 2 or K 3 N

21. Both are correctly written. 5 pt

22. When atoms gain or lose electrons, they are called this?

23. ions 1 pt

24. The joining of atoms to form new substances is called this.

25. Chemical bonding 2 pt

26. Which of the following compounds is ionic? LiF or C 2 H 4

27. LiF 3 pt

28. Which of the following elements will most likely bond with Li? Al, C, F, N, O, S

29. F 4 pt

30. How does a balanced chemical equation demonstrate the Law of Conservation of Matter?

31. The number and type of atoms are the same in the reactant and the product. 5 pt

32. Which part of the following equation is the reactant. 2H 2 + O 2  2H 2 O

33. 2H 2 + O 2 1 pt

34. Balance the following chemical equation. LiCl + Br 2  LiBr + Cl 2

35. 2LiCl + Br 2  2LiBr + Cl 2 2 pt

36. What type of reaction is the following? 8Cu + S 8  8 CuS

37. synthesis 3 pt

38. Balance the following chemical equation. Na 3 P + CaF 2  NaF + Ca 3 P 2

39. 2Na 3 P + 3CaF 2  6NaF + Ca 3 P 2 4 pt

40. What type of reaction is the following? Cl 2 + 2KBr  2 KCl + Br 2

41. Single displacement 5 pt

42. Is the following equation balanced? SnO + 2 H 2 → Sn + 2 H 2 O

43. No 1 pt

44. What is/are the coefficient/s in the following equation. 2 C 4 H 10 + 13 O 2 → 8 CO 2(g) + 10 H 2 O

45. 2, 13, 8, 10 2 pt

46. When looking at a chemical formula, how can you tell if the substance is ionic or covalent?

47. Metal and non-metal = ionic non-metal and non-metal = covalent 3 pt

48. What do the following elements have in common? C, Si, Ge, Sn, Pb?

49. In group 14 and they have 4 valence electrons. 4 pt

50. How is a pure substance different from a mixture.

51. Pure are made from a single particle type, mixtures more than 1 type. Mixtures can be separated physically, pure can’t. 5 pt