There are this many significant figures in 0.00450.
What is 3?
This is the SI unit of time.
What is the second?
100 (cm) is equal to this length.
What is 1 (m)?
Of the two rulers shown, this one gives the more precise measurement.
What is Ruler B?
The slope of this graph represents this physical property of the material.
What is density?
The number of significant figures in 105.02.
What is 5?
A speed reported simply as “20” is missing this.
What are units?
The number of meters in a kilometer
What is 1000 (m)?
Measurements that are close to their accepted values are described by this word.
What is "accurate"?
The mathematical model relating density, mass, and volume.
m=ρ*V
Calculate 12.11+0.3+1.245 and report it correctly.
What is 13.7?
A ratio of two quantities with identical units has this unit.
What is no unit / is unitless?
Convert 375 cm to meters.
What is 3.75 m?
Measurements that are consistently very close to one another are described by this word.
What is "precise"?
If two blocks have the same volume, this one is denser: the one with greater mass or smaller mass.
What is the one with greater mass?
Calculate 2.30×4.1 and report the answer with the correct significant figures.
What is 9.4?
A graph has grams on the vertical axis and milliliters on the horizontal axis. Its slope has these units.
What are (g/mL)?
Convert 72 (km/h) to (m/s).
What is 20 (m/s)?
A measurement is reported as 4.2±0.6. This interval contains these minimum and maximum values.
What is a min of 3.6 and a max of 4.8?
Water rises from 22.0 (mL) to 28.5 (mL) when an object is submerged. This is the object's volume. 
What is 6.5 (mL) or 6.5 (cm³)?
The value 1500 written so that it clearly has three significant figures is this.
What is 1.50×103?
A graph has mass in grams on the vertical axis and time in seconds on the horizontal axis. Its slope would have these units.
What are (g/s)?
750 nm written in meters using scientific notation is this value.
What is 7.50×10−7 (m)?
A measurement of 8.4±0.2 (cm) could reasonably include this value: 8.1, 8.5, or 8.8 (cm).
Response: What is 8.5 (cm)?
This is the denser of the two materials.

What is Material A?