Question

In what way is this a semi-quantitative test?

1) It involves both qualitative and quantitative analysis
2) It is a test that measures semi-quantitative skills
3) It is a test that combines qualitative and quantitative questions
4) It is a test that focuses on semi-quantitative concepts

Answer 1

A semi-quantitative test combines both qualitative and quantitative analysis in chemistry.

Step-by-step explanation:

A semi-quantitative test is a test that combines qualitative and quantitative analysis. It involves both qualitative and quantitative analysis, meaning it includes descriptive observations as well as measurements or calculations.

In chemistry, there are various methods used for semi-quantitative analysis, such as titrations and gravimetric analysis. Titrations involve measuring the volume of a solution required to react completely with a sample solution, which is then used to calculate the concentration of the analyte. Gravimetric analysis involves separating the analyte from a sample by physical or chemical processes and then measuring its mass.

Therefore, option 3) 'It is a test that combines qualitative and quantitative questions' accurately describes a semi-quantitative test.