2019 Mod 1 Flashcards
What contains matter?
Everything except forms of energy
List the basic metric unit used to measure length, mass, time and volume
Meter (m), gram (g), second (s), liter (l)
In the metric system, what does the prefix milli- mean
0.001 or one-thousandth
In the metric system, what does the prefix centi- mean
0.01 or one-hundredth
I’ll conversion factors, when in the form of a fraction, must equal what?
One
Two students measure the mass of an object that is known to be 50. 0 g the first student measures the mass to be for 9.8123 g. The second measures the mass to be 50.1 g. Which student was more precise? Which student was more accurate?
The first
the second
Explain what a significant figure is
It’s significant figure is a Measure digit that comes from a measuring instrument
A student measures the mass of an object a to be 50.3 g And measures the mass of abject B to be 200.24 g. She didn’t report the combined mass to be 251 g. Is the student correct? Why or why not?
No, too few significant numbers
What are the two basic rules for using scientific notation?
Only one digit In front of the decimal point and only significant figures go in front of the multiplication sign