Black Squares

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Black Squares

First Name

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Which feels warmer?

Pick up the block after measuring its temperature and determine how it feels to your hands.

block A

block B

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Prediction

Which will melt ice faster?

(A) ice will melt faster on block A

(B) ice will melt faster on block B

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(A) Time required to completely melt ice (s) on block A

How many seconds did it take to completely melt the ice on block A

(B) Time required to completely melt ice (s) on block B

How many seconds did it take to completely melt the ice on block B

Mass of block A (g)

Volume of block A (mL)

Measure the length, width and height in cm. Determine the volume in milliliters. Note, 1 mL = 1 cubic centimeters: V = L x H x W

Density of Block A (g/cc)

Divide the mass of block A (g) by the volume of bock A (mL)

Refer to the D:S (distance to spot) scale when measuring temperature

Temperature of block A (C)

Place the infrared thermometer gun 10 cm from the center of the block and record the temperature in Celsius.

Temperature of block B (C)

Place the infrared thermometer gun 10 cm from the center of the block and record the temperature in Celsius.

Block A

Block A is an element. Knowing its density, what do you think it is made of? These elements are listed in order of increasing density (g/mL)

0.09 Hydrogen H

0.18 Helium He

0.53 Lithium Li

0.86 Argon Ar

0.9 Neon Ne

0.97 Sodium Na

1.25 Nitrogen N

1.43 Oxygen O

1.55 Calcium Ca

1.63 Rubidium Rb

1.7 Fluorine F

1.74 Magnesium Mg

1.78 Potassium K

1.82 Phosphorus P

1.85 Beryllium Be

1.87 Cesium Cs

2.07 Sulfur S

2.26 Carbon C

2.33 Silicon Si

2.34 Boron B

2.54 Strontium Sr

2.7 Aluminum Al

3 Scandium Sc

3.12 Bromine Br

3.21 Chlorine Cl

3.59 Barium Ba

3.75 Krypton Kr

4.47 Yttrium Y

4.54 Titanium Ti

4.79 Selenium Se

4.93 Tellurium Te

5.24 Europium Eu

5.32 Germanium Ge

5.5 Radium Ra

5.72 Arsenic As

5.9 Xenon Xe

5.91 Gallium Ga

6.11 Vanadium V

6.15 Lanthanum La

6.24 Iodine I

6.51 Zirconium Zr

6.68 Antimony Sb

6.77 Cerium Ce

6.77 Praseodymium Pr

6.9 Ytterbium Yb

7.01 Neodymium Nd

7.13 Zinc Zn

7.19 Chromium Cr

7.3 Promethium Pm

7.31 Indium In

7.31 Tin Sn

7.43 Manganese Mn

7.52 Samarium Sm

7.87 Iron Fe

7.9 Gadolinium Gd

8.23 Terbium Tb

8.55 Dysprosium Dy

8.57 Niobium Nb

8.65 Cadmium Cd

8.8 Holmium Ho

8.9 Nickel Ni

8.9 Cobalt Co

8.96 Copper Cu

9.07 Erbium Er

9.3 Polonium Po

9.32 Thulium Tm

9.73 Radon Rn

9.75 Bismuth Bi

9.84 Lutetium Lu

10.07 Actinium Ac

10.22 Molybdenum Mo

10.5 Silver Ag

11.35 Lead Pb

11.5 Technetium Tc

11.72 Protactinium Pa

11.85 Thallium Tl

12.02 Palladium Pd

12.37 Ruthenium Ru

12.41 Rhodium Rh

13.31 Hafnium Hf

13.5 Curium Cm

13.55 Mercury Hg

13.67 Plutonium Pu

14.78 Berkelium Bk

15.1 Californium Cf

15.4 Thorium Th

16.65 Tantalum Ta

18.95 Neptunium Np

19.32 Gold Au

19.35 Tungsten W

19.84 Americium Am

20.2 Uranium U

21.04 Rhenium Re

21.45 Platinum Pt

22.4 Iridium Ir

22.6 Osmium Os

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