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WorksheetsMeasuring in Chemistry
Total questions: 15
Worksheet time: 38mins
Determine the number of significant digits.
a) 0.0157 g ________________
b) 700 m ________________
c) 508,987 mm ________________
d) 1.2 x 103 ________________
e) 25 computers ________________
Round the following to the specified degree of accuracy. (4 pts)
8.696 to 2 significant figures ___________________
0.39888 to 3 significant figures ___________________
66.279 to 1 significant figure ___________________
279.09558 to 2 significant figures ___________________
Use the conversion factor to solve the following:
Mrs. Rodríguez is visiting Japan. She wants to buy a Kimono to take back home. She has $500 US and the kimono costs 475 yens, will she have enough money to buy one? Conversion factor (1 Japanese Yen = 0.0095 US Dollar)
Use a Conversion factor to solve the following.
1.9 x 105 mg = __________ dg
14.8 g = __________ µg
6.6 x 103 mm = __________ Dam
The SI units of measurement for the following are:
mass ___________________________
volume _________________________
length or distance ________________________
time ________________________
amount of matter ________________________
temperature
(a)
Convert the following numbers into standard notation. (6 pts)
a) 7.4 x 10-5 ____________________
b) 5.76 x 100 ____________________
c) 4.11 x 103 ____________________
Convert the following numbers into Scientific notation. (4 pts)
a) 0.0157 g ________________
b) 700 m ________________
c) 508,987 mm ________________
d) 1.2 ________________
Solve the following problems. (10 pts)
108 x 104 = _______________________
10 9/102 = _______________________
108/10 - 4 = _______________________
100 + 101 = _______________________
105 - 103 = _______________________
Is this image of a bee sting a physical or a chemical change?
Physical change
Chemical change
Is this image of crushing ice a physical or a chemical change?
Physical change
Chemical change
Is this image of condensation of water vapor a physical or chemical change?
Physical change
Chemical change
Is this image of melting lead a physical or a chemical change?
Physical Change
Chemical change
Which of the following prefix corresponds with its value?
Tera = 103
Mega= 106
deci = 10-1
micro = 10 -12
hecto= 102
Place a check mark next to the correct statements.
Temperature is an extensive property of matter.
Water's boiling point is 100 degrees Celsius
The melting point is the temperature at which a gas turns into a liquid.
Mass is an extensive property of matter.
Use the image to explain in your own words the differeance between accuracy and precision.
