Anything
How do you convert °C to Kelvin?
°C+____=Kelvin (K)
273.15
When particles are spreading apart and moving faster that means energy is _____ to the system, which leads to an increase in _______.
added;temperature
What is the density equation?
Is density considered an extensive or an intensive property?
d=m/v;intensive
What is the equation for density?
Calculate the density of acrylic if it has a mass of 8.23g and a volume of 15.63 cm3
d=m/v;0.53 g/cm3
What is the equation for mass?
If you had a density of 9.5g/mL and a volume of 22 mL for a cup of soup, what would be its mass?
M=d(v);209 g
What is the equation for volume?
What would be the volume of a metallic substance if it weighed 32.7g and had a density of 6.43 g/cm3
v=m/d;5.09cm3
Convection has to do with _____ & ______; conduction means substances are ______; radiation means ______ waves.
liquids;gasses;touching;electromagnetic
How do you calculate percentage error?
An expirement called for 50 mL of water, you measured 75 mL of water accidently. What is your percentage error?
(experimental-actual)/actual x 100;50%
What is the significant figure rule for addition and subtraction?
Convert the following into scientific notation: 0.093452
Answers should be to the least precise measurement (lowest decimal) USE THE BUDDY SYSTEM;9.35x10-2
What do seperation techniques take advantage of?
Physical properties
What is the definition of Accuracy?
The closeness of a measurement to the correct/accepted value.
What is the definition of Precision?
The closeness of a set of measurements to one another.
1 year = _____ days; 1 day = ____ hours; 1 hour = ____ seconds
How many seconds are there in one year?
365;24;3600;31,536,000 seconds
Homogenous mixture means it is _____;a heterogenous mixture means it is NOT _____
uniform;uniform
How do you convert from moles of a substance to particles (atoms) of a substance and vice versa?
What is avogadro's number?
Using avogadro's number;6.02x1023
Your doing an expirement with 73.2 mol of aluminum. How many particles are present in this substance/expirement.
4.41x1025 part
(73.2 mol Al)/1 x 6.02x1023/1 mol
Give an example of a chemical and physcial property.
Chemical: alkali metals w/ water, flammability; Physical: density, color, shape
Solid particles are _____ tightly together; liquid particles _____;gas particles _____ _____.
packed;flow;move rapidly
Our calorimeter was an _____ system because _____ & _____ were able to _____ _____.
open;matter;energy;flow freely
You are performing an expirement with 21.7g of Nickel. The temperature change that occured was 45°C to 108°C. The specific heat capacity of Nickel is 0.44 J/g⋅°C. How much energy was required for this temperature change to occur?
q=601.5J;q=mcΔT; q= (21.7g)(0.44 J/g⋅°C)(108°C-45°C)
Elements _____ be broken down into simpler substances; Compounds _____ be broken down into simpler substances
Give an example of a compound
Cannot;Can;NaCl, KCI, H2O
Definition of Constraint
Examples of constraints
limitations to the design; cost, weight, dimensions, resources, time.
Definition of Criteria
Examples of Criterias
goals that state whether or not the system is successful; cost, safety, reliability, aesthetics
What kind of transformation is occuring when we are burning a marshmallow during our calorimeter expirement? (TYPE)
Chemical (food) --> Thermal (heat/fire)
What kind of transformation is occuring when we are burning a marshmallow during our calorimeter expirement? (FORM)
Potential --> Kinetic