Test- Chemical Reaction

Question 1

21. A teacher wants to demonstrate a chemical reaction for her students. Which of the following observations does NOT indicate that a chemical reaction has occurred?

Answer 1

melting a solid piece of aluminum pg. 3

Question 2

25. Process by which the atoms of one or more substances are rearranged to form different substances

Answer 2

Chemical reaction pg. 3

Question 3

27. A teacher wants to demonstrate a chemical reaction for her students. Which activity below would best demonstrate a chemical reaction?

Answer 3

Placing metal in an acid to create gas pg. 3

Question 4

34. The materials present at the beginning of a chemical reaction are called the products.

Answer 4

False, reactant pg. 3

Question 6

41. Looking at your problems for part 2 # 35 through #39 which reaction was not shown? How do you know?

Answer 6

Combustion 
Burning 
Reactant has O2
Product has H2O and CO2
Pg. 12