Scientific Notation
Write 0.00056 in scientific notation
5.6 x10-4
How many significant figures are in 0.00450?
3
Measurements that are close to one another demonstrate this.
Precision
The SI base unit for mass.
kg
The equation used to calculate density.
D = m/V
Write 4.72 x105 in standard notation
472000
How many significant figures are in 10.020?
5
A measurement close to the accepted value demonstrates this.
Accuracy
1 mL is equal to this solid volume.
1 cm3
Density is classified as this type of property because it does not depend on sample size.
Intensive
Calculate: (3.0 × 10⁴)(2.5 × 10³)
7.5 x107
Calculate and report correctly: 12.45 + 3.2
15.7
What is the error if the experimental value is 24.8 g and the accepted value is 25.0 g?
-0.2 g
Which is affected by gravity: mass or weight?
weight
A sample has a mass of 36.0 g and volume of 15.0 mL. Find its density.
2.40 g/mL
Calculate: (8.4 × 10⁶) ÷ (2.0 × 10²)
4.2 × 10⁴
Calculate and report correctly: 6.25 × 2.4
15
Calculate the percent error for an experimental value of 9.50 g and an accepted value of 10.00 g.
5.0%
Convert 25°C to Kelvin.
298 K
An object has a density of 0.85 g/mL. Predict what it will do when placed in water (with density 1.00 g/mL).
float
Calculate: (6.25 × 10⁴) + (3.4 × 10³)
6.6 × 10⁴
Calculate and report correctly: 42.60 ÷ 3.5
12
Three students obtain 12.1 g, 12.1 g, and 12.2 g. The accepted value is 15.0 g. Their measurements are ______ but not ______.
Precise; Accurate
A box measures 4.20 cm × 3.5 cm × 2.00 cm. Calculate its volume with the correct significant figures.
29 cm3
During water displacement, a student accidentally records the final volume too high. What happens to the calculated density?
It becomes too low