Item SC067003: When two liquids are mixed together and a solid forms, the solid is a new substance that was formed during a chemical reaction between the two liquids.
A student mixes two different liquids together. After mixing the liquids, a solid substance forms that cannot be turned back into the starting liquids. The student claims that a chemical reaction occurred. Why is the student correct?
- Because a solid substance is always formed during a chemical reaction
- Because a new substance is always formed during a chemical reaction
- Because a chemical reaction always occurs when two substances are mixed together
- Because the products of a chemical reaction can never be turned back into the starting substances
- Distribution of Responses
![Chart showing distrubtion of responses for Item SC067003](http://chart.apis.google.com/chart?chs=265x180&cht=bvg&chf=bg,s,00000000&chco=76A4FB|339933|76A4FB|76A4FB&chds=0,100&chd=t:9,39,17,35&chxl=0:|A|B|C|D&chxt=x,y&chbh=a&chbw=a&chm=N*f0*%,000000,0,-1,11,,e::5&filename=SC067003-dist.png)
- Students Responding Correctly
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 1814 | 4657 | 39% |
Grades | |||
6–8 | 907 | 2449 | 37% |
9–12 | 897 | 2179 | 41% |
Gender | |||
Male | 872 | 2199 | 40% |
Female | 906 | 2360 | 38% |
Primary Language | |||
English | 1631 | 4120 | 40% |
Other | 140 | 411 | 34% |