1. which of these is the basic unit of mass?
a. l
b. kg
c. cm
d. ml

2. the amount of matter is an object is known as
a. weight
b. volume
c. density
d. mass

3.which of these is an appropriate instrument to measure mass?
a. balance
b. burette
c. ruler
d. graduated cylinder

4. weight is a measure of:
a. inertia
b. force
c. matter
d. mass

5. the mass of 1 gram:
a. is kept as a standard platinum cylinder in france
b. is .01 kg
c. equals the mass of 1 ml of water at 4°c
d. equals 1 cm³

1) the basic unit of mass (SI unit) is Kg

2) the amount of matter in an object is known as density, infact the amount of matter in a unit volume is density

3) We can measure the mass with a balance

Burette: for volume

rule : for length

graduated cylinder : for volume

4) Weight is measure of force of gravity on a matter

5) the density of water = 1 g / mL at 4 C

so mass of 1 mL of water will be equal to 1 gram

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

the answer is the first option

explanation:

just googled it m8. not that hard

lol