Question

The researcher wants to record the temperatures at which two new antifreeze formulas freeze. A sample of each formula is placed in a freezer until they are completely frozen. The researcher then removes the samples and monitors the temperature of each formula as it changes back to a liquid, using the same thermometer for each measurement.

1. Describe the effect on the attractive forces of each antifreeze formula as it changes from a solid to a liquid.

2. Explain how the strength of the attractive forces can affect the temperatures at which the formulas freeze.

3. Explain why using the same thermometer makes the comparison of the temperatures more reliable.

Answer 1

i1926, science found the answer: the petroleum-derived chemical compound ethylene glycol. This antifreeze additive, still widely used today, has the chemical formula C2H6O2. That means ethylene glycol is chemically composed of two carbon atoms, six hydrogen atoms, and two oxygen atoms.

Step-by-step explanation: