Classify each of these statements as always true, sometimes true or never true.
__NT___11. The SI base unit of mass is the milliliter.
__AT___12. A decigram is 100 times smaller than a gram.
___ST__13. The SI unit of volume is derived from the unit of length.
__NT___14. There are six basic SI units of measurement.
11. ok
12. No. a decigram is 10 times smaller than a gram.
13. Length x width x height = volume so it is always true (of course widths and heights are lengths, too).
14. right. there are 7.
there are 6 basic units in the SI unit
To classify each statement, let's go through them one by one:
11. The SI base unit of mass is the milliliter.
This statement is never true. The SI base unit of mass is actually the kilogram, not the milliliter. The milliliter is a unit of volume, not mass.
12. A decigram is 100 times smaller than a gram.
This statement is always true. A decigram is indeed 100 times smaller than a gram. The prefix "deci-" indicates a factor of 10^-1, which means that a decigram is 0.1 grams.
13. The SI unit of volume is derived from the unit of length.
This statement is sometimes true. While the SI unit of volume is derived from the unit of length, it can also be derived from other units. The SI unit of volume is cubic meters (m^3), which can be obtained by multiplying a length (in meters) by another length and another length. Therefore, volume can be derived from the unit of length, but it can also be derived from other units.
14. There are six basic SI units of measurement.
This statement is never true. There are actually seven basic SI units of measurement. They are the kilogram (mass), meter (length), second (time), ampere (electric current), kelvin (temperature), mole (amount of substance), and candela (luminous intensity).
So, to summarize the classifications:
11. Never true
12. Always true
13. Sometimes true
14. Never true