Which of the following steps is missing from Selma's experiment?
Question:
Which of the following steps is missing from Selma's experiment?
Choices:
- Use a thermometer to measure the water's temperature.
- Place the beaker on the balance and measure its mass.
- Run the water through a filter to make sure there are no impurities in it.
- Set a timer for 2 hours.
Answer:
Use a thermometer to measure the water's temperature.