Conversions
kilo, hecto, deca, base, deci, centi, milli
How many sig figs in the following measurement?
0.000250 cm
3
What device is used to measure the length of a book?
Metric ruler or meter stick
What is the formula for calculating density?
d = m/v
What is the base unit for mass?
gram
How many mL in 1.25 L?
1250 mL
How many sig figs in this measurement: 4.3050 g
5
What device is used to measure the mass of a sample of aluminum?
A balance
If an object has a mass of 250. grams and a volume of 10.0 mL, what is its density?
25 g/mL
What is the base unit for time?
seconds
Convert 35oC to Kelvin.
308 K
Complete the following and report your answer with the correct number of sig figs:
2.44 + 143.99 + 3
149
Which device is best to accurately measure the volume of a liquid?
beaker or graduated cylinder
graduated cylinder
What happens to an object if it is less dense than water and it is placed into water?
It floats
What is the formula for calculating percent error?
| actual - experimental | / actual x 100
What is the significance of -273oC?
Absolute zero, the coldest temperature possible, or when molecules stop moving
3.559 m x 0.0023 m =
0.0082 m2
Describe how to measure the volume of a regular shaped object. (formula?)
length x width x height
An object has a mass of 150. g. When the object is placed into 50 mL of water, the water level rises to 72 mL. What is the density of the object?
6.82 g/mL
If an object's density is experimentally determined to be 5.45 g/mL when the actual value is 5.75 g/mL, what is the percent error?
5.22 %
Convert 14.3 km to mm.
1,430,000 mm
Complete the following and report your answer with the correct # of sig figs.
Convert 13.5 days to minutes
19400 minutes
Describe how to measure the volume of an irregular shaped object. (like a rock)
Water displacement
Measure the volume of water
Add the object
Remeasure volume and subtract
What is the mass of 75.0 mL of aluminum that has a density of 0.92 g/mL?
69 grams
Calculate the number of mm found in 134 hm.
13,400,000 mm