Physics, 17.12.2020 18:10 leylaanderson85311

In this performance task, you will classify substances according to similar physical properties. In the first part, you will practice this skill by organizing a variety of common items according to characteristics you choose. Then you will write an explanation as to why you placed the objects into the categories. In the second part of this task you will classify physical properties of elements. Part 1: Study the list of items.
Cereal
Saw
Rice
Hammer
Carrot sticks
Measuring tape
Pliers
Sailboat
Train
Bread
Grapefruit
Pickles
Bicycle
Screwdriver
Airplane
Skateboard
Bus
Wrench
Classify the items into three categories according to their similar physical properties. Once you have all the items classified, write a brief paragraph to explain your classification system and why you chose particular items for each category.
Part 2: The table below lists some elements and their physical properties.
Element
Density (g/cm3)
Boiling Point (°C)
Melting Point (°C)
Mercury (Hg)
13.546
357
-39
Gold (Au)
19.32
2807
1064
Silver (Ag)
10.5
2212
962
Hydrogen (H)
0.0899
-253
-259
Boron (B)
2.34
2550
2300
Barium (Ba)
3.59
1140
725
Radium (Ra)
5.5
1737
700
Antimony (Sb)
6.684
1750
700
Platinum (Pt)
21.45
3827
1772
Plutonium (Pu)
19.84
3235
640
Classify these elements into three categories according to their similar physical properties. Once you have all the elements classified, write a brief paragraph to explain your classification system and why you chose particular elements for each category.

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 20:30

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

Answers: 2

Answer

Physics, 22.06.2019 07:30

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

Answers: 2

Answer

Physics, 22.06.2019 10:50

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

Answers: 3

Answer

Physics, 22.06.2019 11:30

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Answers: 1

Answer

You know the right answer?

In this performance task, you will classify substances according to similar physical properties. In...

Questions