CH 12 - Solids

Question 1

Atoms in a solid that are arranged in a certain way called?

Answer 1

Crystal

Question 2

Metals, salts, and most materials here on Earth can be described as

Answer 2

Crystalline

Question 3

The crystalline form of carbon

Answer 3

Diamonds

Question 4

Solids that do not have their atoms arranged in a certain way called

Answer 4

Amorphous solids or non-crystalline

Question 5

Amorphous solids are distributed

Answer 5

Randomly

Question 6

Examples of amorphous solids

Answer 6

Rubber, glass and plastic

Question 7

Three bonds between atoms

Answer 7

Ionic bonds, covalent bonds, and metallic bonds.

Question 8

Can ionic bonds be separated?

Answer 8

No.

Question 9

Can a Covalent bond be spectated?

Answer 9

Yes

Question 10

The properties of a solid are dependent upon

Answer 10

The kind of bonds that exists between the atoms.

Question 11

Density

Answer 11

The amount of mass per unit volume of a material.

Question 12

Density formula

Answer 12

Density = mass / volume

Question 13

Density depends on

Answer 13

The mass of the atoms and the spacing between the atoms.

Question 14

Elasticity

Answer 14

An object that undergoes changes in shape and/or size.

Question 15

A body’s elasticity is a measured by

Answer 15

how much it changes when force is exerted on it and how well it returns to its original shape.

Question 16

Inelastic

Answer 16

Materials that do not return to their original shape.

Question 17

Hooke’s law

Answer 17

A spring thats stretched is directly proportional to the force applied to it.

Question 18

Elastic limit

Answer 18

the distance beyond which permanent distortion occurs is the elastic limit

Question 19

Hooke’s law is only true as long as the force

Answer 19

Does not stretch or compress the material beyond its elastic limit.

Question 20

tension

Answer 20

When something is pulled

Question 21

compression

Answer 21

When it is squashed

Question 22

I–beam

Answer 22

A beam with a cross-section shaped as the letter I.

Question 23

With I-beams the middle of the beam that is not under stress has the least material.

Answer 23

Minimizes weight

Question 24

With I-beams the top and bottom have the most material which

Answer 24

Maximizes strength

Question 25

Arches

Answer 25

Arches take advantage of the capacity of stone to withstand compression.

Question 26

Catenary

Answer 26

When the arch is supporting its own strength, the curve that gives it maximum strength

Question 27

dome

Answer 27

An arch rotated around 360 degrees is a dome.

Question 28

Which is more dense – a 24k gold ring or a 24k ton of gold? 

Answer 28

Both are made of the same material, so both have the same density

Question 29

When something is squished which physical quantity changes?

Answer 29

Density

Question 30

When something is squished which physical quantity does NOT change?

Answer 30

Mass

Question 31

Which is more elastic—steel or rubber? 

Answer 31

Steel regains its original shape much better than rubber after the force is removed.