1. a student determines the density of water to be 0.966g/ml at a
particular temperature. a search of the literature gives the
density as 0.943g/ml. determine the per cent error in the
student's measurement.

The percentage error in the measurement is 2.4%

Explanation:

The measurement made by the student is .

But the actual value of density is

The formula to calculate percentage error is  

percentage error =

Hence percentage error in this case is given by

Percentage error =

=

A physical quantities value will be determines by various quantities. If errors are made in measuring any of these quantities there will be error in the measurement of the final physical quantity as well.

Here density of a substance is a derived quantity determined by measuring mass and volume of  that substance. If errors are made in mass and volume measurements the density value will also be erroneous.

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."