Comprehension Check from chapter 6 of Discovering Design with Chemistry by Dr. Jay Wile, Berean Builders
Crushing an aluminum can
Digesting Food
Cutting Paper
Melting Ice
Making a hard-boiled egg
Exploding a bomb
At the highest parts of the interior of Antartica, the average temperature is about -76 degrees F. What is it in celsius?
Suppose you put one finger in a glass of water at room temperature and another finger in a glass of alcohol at the same temeperature. Will one finger feel cooler than the other if they remain in the liquid? If so which one?
Suppose you put one finger in a glass of water at room temperature and another finger in a glass of alcohol at the same temeperature. If you pull both both fingers out at the same time will one feel cooler? If so which one?
The heating curve of an unknown substancce shows that the temperature rises steadily, then stays constant at 15 degrees C for a while. The temperature then starts increasing again for a while. However, at 234 degrees C, the temperature stays constant for quite some time. At what temperature does this substance melt? At what temperature does it vaporize (boils) ?
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
234 C | arrow_right_alt | Melts |
15 C | arrow_right_alt | Vaporize |
The utility companies that supply natural gas for burning in stoves, furnaces, etc. , store it in its liquid phase. It is then converted into its gas phase to be deliverred to the customer. Why do they store it in its liquid phase, when the customers need it in its gas phase?
Is the following reaction balanced:
Is the following reaction balanced