1. Periodic Table and Chemical Reactions Review

2. What is the atomic mass of Silicon?
or 28

3. What do you call the substance(s) produced by a chemical reaction?
products

4. Where do you find the products written in a chemical equation?
To the right of the arrow

5. What is the atomic number of Silicon?14

6. What does the arrow in a chemical equation mean?
yields

7. Who arranged the first periodic table?
Dmitri Mendeleev

8. Precipitate formation
Name the 5 indicators of a chemical reaction. (You will receive 1 point for each correct answer.)
Color change
Gas production
Light production
Temperature change
Precipitate formation

9. Who rearranged the periodic table into its current format?
Henry Moseley

10. The current periodic table is arranged in order of ______.
Atomic number

11. What has luster, is malleable, ductile, and good conductor of heat and electricity?
metals

12. Hydrogen is highly flammable is an example of a _________ property.
chemical

13. What are usually gases or brittle solids and poor conductors?
nonmetals

14. Beryllium, Magnesium, Strontium, Barium, or Radium
Name an element that is MOST similar to Calcium.
Beryllium, Magnesium, Strontium, Barium, or Radium

15. Lithium, Beryllium, Carbon, Nitrogen, Fluorine, Neon
Name an element that has the same number of energy levels as Boron.
Lithium, Beryllium, Carbon, Nitrogen, Fluorine, Neon

16. What is the element symbol of Silicon
What is the element symbol of Silicon? (must be written in correct format. Si

17. How many valence electrons does Aluminum have?3

18. Water boils at 100 degrees Celsius is an example of a _______ property.
physical

19. The MOST important subatomic particle to look at when determining chemical properties of an element is ___.
Valence electron

20. Using the periodic table and looking at elements 33, 34, 35, 52, and 53, which of the following statements is true?
A. Selenium is most like Bromine.
B. Iodine has more valence electrons than Tellurium.
C. Bromine and Iodine have the same number of energy levels.
D. Arsenic has more protons.

21. The atomic number of an element represents the number of ____________.
protons

22. What do you call the substance(s) before a chemical reaction begins?
reactants

23. Where do you find the reactants written in a chemical equation?
To the left of the arrow

24. Lighting a match is an example of a ________ change.
chemical

25. What share properties of both metals and nonmetals?
metalloids

26. If a chemical equation is balanced, what law is it following?
Law of conservation of mass

27. Nitrogen, Arsenic, Antimony, Bismuth
An element with the same number of valence electrons as Phosphorus is _____.
Nitrogen, Arsenic, Antimony, Bismuth

28. The group of elements that are the most reactive metals are in group number ____.
1 or 1A

29. The group of elements that are nonreactive gases are in group number _____.
18 or 8A

30. Ice melting is an example of a ___________ change.
physical

31. What is the coefficient of the phosphorus molecule?
P4 + 5O22P2O5
What is the coefficient of the phosphorus molecule? 1

32. What is the subscript of the phosphorus molecule?
P4 + 5O22P2O5
What is the subscript of the phosphorus molecule? 4

33. Does this equation follow the law of conservation of mass?
3N2O5 + 3H2O  5HNO3 no

34. Does this equation follow the law of conservation of mass?
2HgO  2Hg + O2
yes

35. Which coefficients would balance the following equation?
__ NaClO3  __ NaCl + __ 02
2, 2, 3

36. If 16 grams of oxygen are combined with 2 grams of hydrogen, how much water would be formed?