Study of Matter
Conversions
Sig Figs and Errors in Measurement
Energy
Miscellaneous
100
All matter has both mass and _____.
What is volume
100
This is a fraction that equals 1 and includes units that cancel to give you the desired unit in your answer
What is a conversion factor
100
The degree of correctness of a measurement
What is accuracy
100
Temperature is a measure of this
What is kinetic energy or average speed of particles
100
The symbol for the metric unit "micro"
What is (mu)
200
Mass and weight are different because weight involves this force.
What is gravity
200
These MUST be written in a problem setup and answer and must cancel accordingly in order to receive full points when solving a problem.
What are UNITS
200
The number of known digits in a measurement plus one estimated digit
What is significant figures
200
The unit used to measure heat energy
What is joules
200
Type of substance that has a relatively LOW specific heat
What is metal
300
This type of change can be observed without changing the identity of a substance.
What is a physical change
300
What conversion factor can be used to convert nanometers to meters?
What is 10^-9m/1 nm or 1 m/10^9 nm
300
Number of sig figs in the number 0.000420700
What is 6
300
Why the temperature does not rise when ice is melting or water is boiling
What is heat is being used to break intermolecular bonds
300
Amount of heat necessary to increase the temperature of 1 gram of a substance by 1 degree Celsius.
What is specific heat
400
The four signs of a chemical change
What is color change, heat or light given off or absorbed, gas given off, precipitate forms
400
Show your setup in converting 3x10^8 m/s to miles/hr. 5000m = 3.1 mi., 1 hr = 3600 s
What is (3x10^8 m/s) x (3.1 mi/5000m) x (3600 s/1 hr)
400
Convert to Kelvins: 25.2 oC
What is 298.4 K
400
The formula for specific heat
What is c = q/(m*deltaT)
400
Round off the number 2,159,723 cm to 2 sig figs.
What is 2,200,000 cm or 2.2 x 10^6 cm or even 2.2 million cm
500
All changes in state are this type of change.
What is physical
500
The two conversion factors that can be formed from the equality 10 dimes = 1 dollar.
What is 10 dimes/1 dollar and 1 dollar/10 dimes
500
Multiply (6.02 x 10^23 atoms) x (1.667 x 10^-27 kg/atom)
What is 10.03 x 10^-4 = 1.00 x 10-3 kg
500
1 calorie = how many joules?
What is 4.184
500
5 m x 5 m
What is 30 m2
M
e
n
u