THSB
Substances, Chemical Reactions, and Conservation of Matter
Many substances react chemically in predictable ways with other substances to form new substances with different…
Item SB045002: Bubbles of gas forming as a seashell is placed in vinegar is an example of a chemical reaction.
Which of the following is an example of a chemical reaction?
- Salt crystals being crushed into a powder
- A powder dissolving in hot water to make hot chocolate
- The water from sweat evaporating off of your skin and into the air
- Proteins from food being broken down into amino acids in your digestive system
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 378 |
6–8 n = 378 |
9–12 n = 0 |
Male n = 207 |
Female n = 171 |
English n = 350 |
Other n = 28 |
||
| A. | Salt crystals being crushed into a powder | 2% | 2% | NAN% | 1% | 2% | 1% | 7% |
| B. | A powder dissolving in hot water to make hot chocolate | 20% | 20% | NAN% | 23% | 18% | 19% | 32% |
| C. | The water from sweat evaporating off of your skin and into the air | 4% | 4% | NAN% | 4% | 5% | 4% | 11% |
| D. | Proteins from food being broken down into amino acids in your digestive system | 74% | 74% | NAN% | 71% | 76% | 75% | 50% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 378 |
6–8 n = 378 |
9–12 n = 0 |
Male n = 207 |
Female n = 171 |
English n = 350 |
Other n = 28 |
||
| A. | Salt crystals being crushed into a powder | 1% | 1% | NAN% | 1% | 0% | 1% | 0% |
| B. | A powder dissolving in hot water to make hot chocolate | 12% | 12% | NAN% | 12% | 12% | 11% | 21% |
| C. | The water from sweat evaporating off of your skin and into the air | 2% | 2% | NAN% | 2% | 1% | 1% | 18% |
| D. | Proteins from food being broken down into amino acids in your digestive system | 86% | 86% | NAN% | 85% | 87% | 88% | 61% |