Significant Figures
How many significant figures are in 424.1
What is the formula for area of a triangle
1/2 base x height
What is the density of an object of mass 4kg and volume 2m3
2 kg/m3
V = pi r2 h
Which instrument is used to measure the diameters of tubes?
Vernier caliper
How many significant figures are in 4200.9
5
What is the area of this rectangle: H -9m, l-4m
36m2
What is the density of water?
1 g/cm3 or 1000 kg/m3
Which apparatus can help you find the volume of an object that is too large to fit in a measuring cylinder?
displacement can / eureka can
Express 43,000 in standard form
4.3 x 10 4
What is 74.87 down to 3 significant figures
74.9
When finding the area of a circle, what is the value of pi?
3.14 or 22/7
Why does oil float on water?
Because it has a smaller density value.
Which instrument can be used to determine a specific volume of liquid?
pipette
measuring cylinder
burette
Name two instruments that may be used to determine mass.
Triple beam balance
spring balance
top-pan balance
lever arm balance
How many significant figures are in 00000100
3
Find the area of a circle with a diameter of 14 cm
154 cm2
Calculate the mass of a substance if the density is 3 g/cm3 and its volume is 20 cm3.
60 g
This term is used when water in a measuring cylinder is pushed up by an object.
displacement
Convert 6,000m to cm
600,000 cm
What is 8.05 + 10.1 down to 3 significant figures
18.2
Find the area of a triangle when the base is 4 cm and its height is 6cm
12 cm2
Convert the 5 g/cm3 to kg/m3
5000 kg/m3
This is the curvature of the water, you read the bottom part of this.
Meniscus
Express 3.55 x 10-3 in its expanded form
0.00355