Unit 1 Quiz 2
Name: ________________
Block: _____
Convert this number out of
scientific notation:
Round this answer to the
right number of sigfigs:
3.5 x 104
3.256 + 9.4 =
What sigfig rounding rule do
we use when we are
multiplying or dividing
numbers?
Are zeros at the end of a
number significant?
Round this answer to the
right number of sigfigs:
How many sigfigs are in the
number:
Convert 0.125 kilograms into:
2.345 x 6.5=
2300
__________milligrams
Convert this number into
scientific notation:
0.00000345
What sigfig rule do we follow
when we are adding or
subtracting numbers?
What are the metric units for
KHDBDCM?
Convert this number out of
scientific notation:
Convert this number into
scientific notation:
7.64 x 10-6
430,000,000
Convert 200 meters into:
_______ kilometers
________ centimeters
_________ grams
Define Precision
Are zeros in front significant?
Are digits 1-9 significant?
How many sigfigs are in the
number:
0.0030020
Are zeros in the middle of a
number significant?
Known Mass: 1.23g
Known Mass: 1.23g
Measurements:
Measurements:

0.23g

1.23g

4.24g

1.24g

9.25g

1.25g
Describe the measurements
accuracy and precision
Describe the measurements
accuracy and precision
Define Accuracy
What do you study when you
study chemistry?
Known Mass: 1.23g
Measurements:

3.23g

3.24g

3.25g
Describe the measurements
accuracy and precision
What do you study when you
study physics?
How many sigfigs are in the
number:
2.005