Question

Hypothesis: If fizzing tablets are placed in cold water, then they will dissolve faster. An experiment is designed to test the hypothesis. Two glasses of water are filled with water. One glass

is filled with 200 mL and heated to 50 degrees Celcius, and the other is filled with 150 mL of water and cooled to 4 degrees Celcius. One fizzing tablet is put in the heated cup, and two
fizzing tablets are put in the cooled cup. A stopwatch is used to record how long it takes the tablets in each cup to stop fizzing. The glass with heated water stops fizzing in 45 seconds,
and the glass with cooled water stops fizzing in 5 minutes. What errors were made? Select all that apply
A different number of tablets was put in each cup.
The thermometer was not accurate.
The cups had different amounts of water.
The stopwatch was stopped accidentally in the middle.

Answer 1

Answer: Down

Explanation: The stopwatch was stopped accidentally in the middle.

The cups had different amounts of water.