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17 Cards in this Set
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Temperature

Measures thermal energy the Kelvin scale is the absolute scale, we can never reach 0 degrees Kelvin.


Fahrenheit

F=9/5 C + 32


Celcius

C = 5/9 (F  32)


Kelvin

C = K  273
K = C + 273 

What is 10 C in Fahrenheit

EX 9/5*10/1 =90/5 =18+32=50


What is 40 F in C?

5/9 (40  32)=5/9 (8)40/9= 4.44 C.


What is 70 C in K.

K = 70 + 273 = 343 K


What is 100 F in K.

C = 5/9 (10032) = 37.8
37.8 + 273 = 310.8 K 

Density

Density measures the compactness of matter. The more compact the bigger the density value is.


Density formula

D = m/V.


What is the density of sodium chloride 10 cm cubed has a mass of 21.64 g?

21.64/10 = 2.164 g/cm cubed


Finding mass using density and volume.

M = D * V


Finding Volume using mass and Density

V = m/D


What is the volume of 54g of Al if its density is 2.7 g/mL
? 
V = 54/2.7 = 20 mL
V = m / D 

Densities of substances are affected by temperature and pressure (for gases)

DH2O (5C) ≠ DH2O (80C)


Percent error

% error = measure value  actual  actual value / actual value * 100


A ball has an actual mass of 4.00 g, you measure it to be 4.05 g. What is your percent error?

4.05  4.00/4.00 *100 = 1.25%
