13. Shana was asked to conduct the following experiment. Step 1: Label three test tubes 1, 2, and 3.
Step 2: Measure and record the mass of each test tube.
Step 3: Add a small amount of the unknown solid to each test tube and repeat step 2.
Step 4: Heat each test tube over a flame for 3 minutes, then repeat step 2.
She needs to create a data table that records the data in the order in which she collects them. Here is
Dart of Shana's data table.
?
Test
tube
?
Mass.
empty (9)
1
2
3
What headings should Shana list in place of the question marks?
A. Temperature before heating: Temperature after heating
B. Temperature before heating (°C); Temperature after heating (°C)
C. Mass with solid before heating; Mass with solid after heating
D. Mass with solid before heating (9); Mass with solid after heating (9)