When a chemist performs an experiment, the factor being tested is called the
What is variable
100
How many sig figs are in the measurement 5.0070g
What is 5
100
Measurements that you might make in the lab are NeVeR uncertain. True or false
What is false. (Always)
100
The sig figs in
A) 0.0026701m
B) 19.0550kg
C) 3500V
What is
A) 5
B) 6
C) 2
200
Chemistry is the study of ----------- and the ------------ that it undergoes
What is matter and the changes
200
After making observations and proposing a hypothesis, a scientist's next step is usually to --------
What is a thory
200
An appropriate metric unit to measure the distance between New York and Boston is
What is kilometer
200
The DeNsItY of a substance is usually measured in units if grams per cubic centimeter. True or false
What is true
200
Write the following in scientific notation
A) 32,700
B) 1024000
C) 0.0047100
What is
A) 3.27 x 10^4
B) 1.024 x 10^6
C) 4.7100 x 10^-3
300
1 foot = in.?
What is 12 inches
300
List the steps of the scientific method.
What is observing, forming a question,making a hypothesis, testing by experiment drawing a conclusion,and summarizing results in a natural law to describe what happened
300
A zero that is a place keeper in a measurement is not a sig fig. True or false?
What is true
300
SI base unit is one of the seven precisely defined metric units. Derived unit is a combo of base units.
What is the difference between a SI base unit and a derived unit.
300
Measured value - accepted value
-------------------------------------- X 100%
Accepted value
What is percent error
400
86 cm = ft.?
What is 2.8 feet
400
After making observations that lead to a question a scientist may arrive at a
What is a hypothesis
400
The cubic meter is an example do an SI BaSe unit. True or false?
What is false. (Derived unit)
400
1mile=ft?
What is 5280 feet
400
D= ?
m= ?
v= ?
What is mass / volume
What is density x volume
What is mass / density
500
1 in. = cm?
What is 2.54 cm.
500
When drawing scientific graphs the independent variable is shown on the
What is the x axis
500
A measurement that is close to the accepted value has high PrEcIsIoN. True or false