1 m= ______mm
1000
a x 10n
What are the two types of pure substances?
element and compound
What is the equation for density?
density=mass/volume
Which is more important when considering sigfigs: precision or accuracy?
Precision
1 km= _____cm
100,000
Put 45000 into scientific notation
What are the two types of mixtures?
heterogeneous and homogeneous
What is the volume of an object that increases the water level in a graduated cylinder from 54 mL to 92 mL?
38 mL
How many significant figures are in 3.4005070?
8
84 km= ______ miles
(1 mile= 1.60934 km)
52.1953 miles
52 mi (with sigfigs)
Put 8.99 x 10-3 into standard form.
.00899
Steel is an example of a __________
homogeneous mixture
(also accept solution or metal alloy)
What is the density of an object with mass of 50 grams and a volume of 150 mL?
0.33 g/mL
Calculate the following with appropriate number of sigfigs:
4.352 m+ 1.05 m =
5.40 m
33.56 m/s --> mph
75.0718 mph
(75.07 mph w/ sigfigs)
Calculate the following in scientific notation:
(8.5 x 1034) x (4.333x 1057)
3.7 x 1092
A car rusting is an example of a ____________
Chemical change
What is the mass of an object with density of 2.47 g/mL and a volume of 20 mL?
49.4 g
Calculate the following with appropriate sigfigs:
8.47 m/19.30005 hr
0.439 m/hr
Convert:
18 ft2--> m2
(1 m= 1.09361 yd)
1.6723 m2
1.7 m2 with sigfigs
Calculate the following in scientific notation
(3.50 x 1025)- (2.75 x 1023)
3.47 x 1025
Draw a particle diagram for a homogeneous mixture with 3 elements and 2 compounds
Varies
105 mL
Calculate the following with appropriate sigfigs:
(4.5 / 5) + 12.452=
0.9 (1 sigfig) + 12.452
1 dop, 3 dop
13.352--> 13.4