Question

fill in the blanks. how close multiple measurements are to each other is called __. while measuring the mass of a 5.0g weight, you observe measurements of 3.4g, 5.4g, and 7.3g. these measurements do not have good precision nor . while observing a chemical reaction, you say to your lab partner “the outside of the beaker is very hot.” this is an example of a observation. the measurement of 13.5° celsius from a thermometer is a observation. when measuring off any instrument, you must measure all certain digits off the instrument plus one extra digit. scientific notation includes two parts, the and the power of 10. an exact number has an __ amount of significant figures.

Explanation:

1. Precision describes how close repeated measurements are to one another.
2. Accuracy refers to how close measurements are to the true value; these measurements lack both precision and accuracy.
3. A qualitative observation describes properties (like temperature as "hot") without numerical values.
4. A quantitative observation uses numerical measurements (like a temperature value with units).
5. When reading instruments, you record certain digits plus one estimated digit to reflect measurement uncertainty.
6. Scientific notation has a coefficient (a number between 1 and 10) and a power of 10.
7. Exact numbers (like defined counts) have an infinite number of significant figures because they have no measurement error.

Answer:

1. Precision
2. Accuracy
3. Qualitative
4. Quantitative
5. Estimated
6. Coefficient
7. Infinite