Question 1 1 pts

Deuterium is one of two stable isotopes of hydrogen. The nucleus of a deuterium atom, called a deuteron, contains

one proton and one neutron. Which of the following is the correct notation for deuterium?

@7?H

O1n

O fH

OH

Question 2 i pts

Sova was decluttering in his garage when he suddenly found a copper wire attached to his old bow. He thought he

could still use this bow if it has enough resistivity. What can he do to improve the resistivity of the copper wire?

He must add impurities to the copper wire.

He must increase the length of the copper wire.

He must decrease the cross-sectional area of the copper wire.

He must connect the copper wire to a high voltage power supply,

Question 3 1 pts

An unknown element has a mass number of 238 and an atomic number of 92. How many neutrons does it have?

O 146

92

238

330

Question 4 1 pts

Chlorine, in its neutral state, gains one electron. What has it become?

i@ An anion

Acation

An isotope

Aboson

58h

Question 5 1 pts

This process refers to the heat treatment to materials to increases their ductility making them more workable.

Annealing

Doping

) Casting

Coating

Question 6 1 pts

This refers to the ability of an atom to attract toward itself the electrons in a chemical bond.

Blectronegativity

bonization energy

() Atomic radius

( Electron affinity

Question 7 1pts

If the atomic number of an element is E how many protons are inside its nucleus?

ol

O6

O8

Question 8 1 pts

Nylon and REDEGeemere are examplesof ;

Resins

Plastics

O Metals

CO Ceramics

Question 9 1 pts

Which of the following is not included in the four major components of materials?

Function

Performance

Properties

Structure

Question 10 1 pts

The figure below shows the electronic configuration of Antimony illustrated in an atomic model view, How many

valence electrons does Antimony have?

5

1

Venere ory Ts

Question 11 1 pts

Which of the following is an example of an amorphous solid?

Cotton candy

Quartz

Table salt

Diarniond

Next

Question 12 ipts

The figure below shows an FCC unit cell with lattice constant a and a face-diagonal length of 4R, What must be the

value of the lattice constant in terms of R?

O 2Rv2

4RV2

2R

1pts

Iron can change its crystal structure from [elo gee depending on temperature conditions. This property of iron

is called

Polymorphism

botropy

Ductility

Anisotropy

Question 14 1pts

How many members does the family (1H) have?

o8

O6

o3

Oo i4

1 pts

(010)

(010)

(011)

(110)

Question 16 ipts

Which of the following plane notation best describes the shaded region in the unit cell of the figure below?

(011)

(101)

(111)

(110)

Question 17 ipts

The hexagonal close-packed crystal structure has a coordination number of 12. How many atoms are there in one

unit cell in this crystal structure?

o6

o4

o2

o1

Question 19 1 pts

Solve for the Siomie packing factor of an FCC crystal structure.

oO o74

0.68

oO 052

0033

Question 20 ipts

This refers to the smallest unit of arrangement describing the pattern of crystals.

Unit Cell

) Lattice Constant

APF

( Interaxial Angles