2019 Mod 1

Question 1

What contains matter?

Answer 1

Everything except forms of energy

Question 2

List the basic metric unit used to measure length, mass, time and volume

Answer 2

Meter (m), gram (g), second (s), liter (l)

Question 3

In the metric system, what does the prefix milli- mean

Answer 3

0.001 or one-thousandth

Question 4

In the metric system, what does the prefix centi- mean

Answer 4

0.01 or one-hundredth

Question 5

I’ll conversion factors, when in the form of a fraction, must equal what?

Answer 5

One

Question 6

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?

Answer 6

The first

the second

Question 7

Explain what a significant figure is

Answer 7

It’s significant figure is a Measure digit that comes from a measuring instrument

Question 8

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?

Answer 8

No, too few significant numbers

Question 9

What are the two basic rules for using scientific notation?

Answer 9

Only one digit In front of the decimal point and only significant figures go in front of the multiplication sign