which of the following is not true?
the amount of matter after a chemical reaction is more than the amount of matter before the reaction
which of the following is the correct order of the steps of the scientific method?
observations, hypothesis, experiment
a set of hypotheses that gives an overall explanation of a natural phenomenon, which can be modified over time is called a :
which of the following is NOT true about a law?
it can be modified (changed)based on new information
express the number 0.000779 in scientific notation
express 165,000 in exponential (scientific) notation
what is the product of (1x10^-4)(3x10^2)?
we generally report a measurement by recording all of the certain digits plus the ---uncertain
how many significant figures are there in the number 0.0456?
the agreement of a particular value with the true value is called
------- it reflects the reproducibility of a given type of measurement