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Design and Technology > Properties > Flashcards

Properties Flashcards

1
Q

What is strength

A

The ability to withstand forces without breaking.

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2
Q

What is hardness

A

The ability to withstand scratching, abrasion or denting

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3
Q

What is toughness

A

The ability to be hard to snap or break.

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4
Q

What is elasticity

A

The ability to be stretch and bent but then return to its original shape

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5
Q

What is malleability

A

The ability to be bent and shaped

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6
Q

What is ductility

A

The ability to be drawn into a wire

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7
Q

Name the 6 working properties

A

-Strength
-Hardness
-Toughness
-Elasticity
-Malleability
-Ductility

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8
Q

Name the 5 physical properties

A

-Electrical conductivity
-Thermal conductivity
-Fusibility
-Absorbency
-Density

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9
Q

What are electrical conductors

A

Materials that let electricity travel through them easily

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10
Q

What are electrical insulators

A

Materials that don’t let electricity travel through them easily

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11
Q

What are good electrical conductors

A

Metals

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12
Q

What are good electrical insulators

A

Plastics

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13
Q

What are thermal conductors

A

Materials that let heat travel through them easily

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14
Q

What are thermal insulators

A

Materials that don’t let electricity travel through them easily

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15
Q

What are good thermal conductors

A

Metals

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16
Q

What are good thermal insulators

A

Plastic, board and wood

17
Q

What properties do materials with high fusibility have

A

-Low melting points : only a small amount of heating is required to convert these materials to liquids

18
Q

What is density

A

A measure of its mass per unit volume

19
Q

What is absorbency

A

The ability to soak up moisture

20
Q

What are some properties of absorbent materials

A

-Can be dyed easily
-Dry slower
-More vulnerable to stains

21
Q

What properties to non-metals generally have

A

-More brittle
-Not always solid at room temperature
-Poor electrical conductors
-Dull looking
-Less dense

22
Q

What properties to metals generally have

A

-Strong
-Malleable
-Good conductors of heat and electricity
-Not very fusible

23
Q

What is an alloy

A

A mixture of two or metals, or a metal mixed with another element

24
Q

What are the benefits of alloys

A

Can be made for specific properties

Design and Technology (6 decks)

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