measurement of matter

Question 1

what is the basic unit, symbol and measuring device of mass?

Answer 1

1. grams
2. g
3. balance

Question 2

What is the basic unit, symbole, and measuring device of volume?

Answer 2

1. L or cm3
2. l, cm3
3. graduated cylinder

Question 3

What is the basic unit, symbol, and measure device for length?

Answer 3

1. meter
2. m
3. ruler

Question 4

what is the basic unit, symbol and measuring device for temperature?

Answer 4

1. kelvins or celsius
2. K or C
3. thermometer

Question 5

what is the basic unit, symbol and measuring device for time?

Answer 5

1. seconds
2. s or sec
3. watch

Question 6

what is the basic unit, symbol and measuring device for amount of substance

Answer 6

1. mole
2. mol

Question 7

how many mm, cm, and dm equal to 1 m

Answer 7

1. 1000mm - 1m
2. 100 cm - 1m
3. 10dm = 1m

Question 8

When decimal place is present, how do you count for the number of sig figures?

ex. 0.002 = how many sf
0. 0020 = how many sf

Answer 8

1. you count from pacific side ( left to right(
2. start counting with the first non zero digit

ex 1. 1 sf

ex 2. 2 sf

Question 9

When decimal place is absent, how do you count for the number of sig figures?

ex 1. 45000 =

ex 2. 25001 =

Answer 9

1. count from atlantic side ( right to left)
2. first non zero you find and all the digits from here to end including any zeros
3. 2sf
4. 5sf

Question 10

0.0507010mL = how many sf

Answer 10

6 sf

Question 11

what is the rule for multiplying and dividing significant figures?

Answer 11

limit and round to the least number of significan figures in any of the factors

Question 12

What is the formula for mass?

Answer 12

mass = density x volume