Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Material Science > Final > Flashcards

Final Flashcards

58 True/False

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

The concept of an atom is 1 hundred years old?

A

False: several thousands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Robert brown came up with the idea that atoms vibrate.

A

True: Brownian motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

All materials burn at the same color

A

False: It depends on the atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The number of electrons equal the number of neutron.

A

False: protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Aluminum is a solid.

A

False: an Amorphous liquid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A crystal is a ionic bond.

A

False: coordinate covalent bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Metals are usually single elements.

A

False: usually alloys

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Specific gravity is the density of a material divided by the density of the weight. A comparison to the specific gravity of water.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Pure metal has a specific melting point you can look up.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Specific heat is the amount of calories you have to add to raise the material up by one degree of heat.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Silver is a better conductor of heat than aluminum

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Silver conducts heat better than steel.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Thermoexpansion is how much something expands to heat.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

All materials expand through thermoexpansion.

A

False: Antimonie contracts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

A good conductor of electricity is not a good conductor of heat

A

False: A good conductor of heat is a good conductor of electricity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Copper is a good conductor of electricity and heat

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Crystalline structure of a material determines the corrosion resistance of the material.

A

False: The chemical makeup

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Adding a lot of carbon to steel increases the temperature to freeze it.

A

False: it goes down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

If you add 1 degree of carbon the temperature to freeze steel increases.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Tensile strength is the ability of a material to push together

A

False: Stretch apart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Yield strength is the force to deform a material

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Fracture strength is the force required to break a material.

A

False: The ability to break a material divided by the cross sectional area.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Ductility is the percent of elongation and percent of material that elongates in two inches of pull

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Hardness is resistance to indenting

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Compression strength is the resistance to compression

A

False: and stressing (push or pull)

26
Q

Cooling steel produces ferret, perlite, and cementite crystalline structures.

A

True

27
Q

Cooling steel slowly produces cementite and ferret structures.

A

False: cementite and perlite

28
Q

Cementite is made of iron-carbon

A

True

29
Q

Sulfur is always in carbon-steel

A

True

30
Q

An alloy of steel contains chrome.

A

False: contains 1.65 percent manganese or .6 percent copper.

31
Q

Annealing steel requires heating the material above critical range then cooling the material slowly.

A

True

32
Q

An ossetintite structure is produced when annealing steel and is very sturdy.

A

False: Malleable

33
Q

Perlite is a combination of ferret and concretite.

A

False: ferret and cementite

34
Q

Ferret has oxygen in it.

A

True: iron oxide

35
Q

Tempering steel requires heating the material below the transformation range.

A

False: above

36
Q

Ferret steel contains chromium and carbon

A

True

37
Q

Osstenthetic steel is the same as ferretic steel.

A

False: It has nickel in it

38
Q

Martenistic steel has lower carbon then ferretic steel.

A

False: Higher carbon

39
Q

You cannot weld cast iron

A

False: you can

40
Q

The first two digits on steel is the percent of carbon

A

False: The alloy

41
Q

The second two digits on steel is the percent of carbon

A

True

42
Q

A bolt with three lines on top is medium carbon steel

A

True

43
Q

A black bolt is high carbon steel

A

True

44
Q

No lines on a bolt is medium carbon steel.

A

False: Low carbon

45
Q

A bolt with 10.9 is low carbon steel.

A

False: medium carbon steel

46
Q

You can make aluminum stronger by hot rolling the aluminum.

A

False: cold rolling

47
Q

You can drill, mill, and bend casting alloys of aluminum.

A

False: They will break

48
Q

The first number on aluminum tells you the percent of aluminum in it.

A

True

49
Q

A 1 on aluminum is telling you that the material is 99 percent or greater of aluminum.

A

True

50
Q

A 2 as the first number on aluminum tell you that it has zinc in it.

A

False: Not zinc

51
Q

The danger of drilling steel fast is the effect of anneeling occuring on the material.

A

True: it will make the material weaker

52
Q

Plastics are polymers of carbon and are malleable.

A

True

53
Q

Plastics are classified using structure and backbone polymer or side chains.

A

True

54
Q

Thermoplastics change chemical structure when they are heated.

A

False: They do not change

55
Q

Polypropylene will change its chemical structure when heated.

A

False: It is a thermoplastic

56
Q

Polypropylene and nylon have the same chemical structure.

A

False: Nylon has nitrogen in it.

57
Q

The ways to remove heat from the body are radiation, evaporation, conduction, convection, and behavioral adaption.

A

True

58
Q

Apocrine sweat glands release oils.

A

True

59
Q

The best way for your body to release heat is convection.

A

False: Radiation

60
Q

The best material for your body is a wicking material like synthetic cotton blends.

A

True

61
Q

Fiberglass makes a strong tensile strength material.

A

True

Material Science (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions