THSB
Matter and Energy in Living Systems
Plants use sugar molecules to make a variety of larger carbon-containing molecules that become part of their bod…
Item SC035004: During a chemical reaction, atoms stay the same but rearrange to form new molecules.
Two substances interacted and a chemical reaction occurred. What happened to the atoms and molecules of the substances during the chemical reaction?
- All of the atoms changed into new atoms and formed new molecules.
- All of the atoms stayed the same but rearranged to form new molecules.
- The molecules and the atoms they are made of are the same after the chemical reaction.
- Some atoms rearranged to form new molecules, and other atoms were changed into new atoms.
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 356 |
6–8 n = 356 |
9–12 n = 0 |
Male n = 193 |
Female n = 163 |
English n = 329 |
Other n = 27 |
||
| A. | All of the atoms changed into new atoms and formed new molecules. | 20% | 20% | NAN% | 20% | 21% | 21% | 15% |
| B. | All of the atoms stayed the same but rearranged to form new molecules. | 36% | 36% | NAN% | 38% | 33% | 37% | 22% |
| C. | The molecules and the atoms they are made of are the same after the chemical reaction. | 12% | 12% | NAN% | 12% | 12% | 11% | 22% |
| D. | Some atoms rearranged to form new molecules, and other atoms were changed into new atoms. | 32% | 32% | NAN% | 30% | 34% | 31% | 41% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 345 |
6–8 n = 345 |
9–12 n = 0 |
Male n = 184 |
Female n = 161 |
English n = 318 |
Other n = 27 |
||
| A. | All of the atoms changed into new atoms and formed new molecules. | 7% | 7% | NAN% | 7% | 7% | 7% | 7% |
| B. | All of the atoms stayed the same but rearranged to form new molecules. | 71% | 71% | NAN% | 69% | 74% | 72% | 67% |
| C. | The molecules and the atoms they are made of are the same after the chemical reaction. | 9% | 9% | NAN% | 10% | 9% | 9% | 7% |
| D. | Some atoms rearranged to form new molecules, and other atoms were changed into new atoms. | 13% | 13% | NAN% | 15% | 11% | 12% | 19% |