MatterAnd Classification Flashcards

(36 cards)

1
Q

Explain matter

A

All object consist of matter and take space and mass

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2
Q

Def material

A

Substance made out of matter

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3
Q

Def Streangth

A

If it cans support heavy load without breaking

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4
Q

Def thermal conductivity

A

If it conduct heat or not

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5
Q

Electrical conductivity

A

If it can conduct electricity or not

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6
Q

Brittleness

A

How easily it can break

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7
Q

Malleable

A

How easily it can change it’s form

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8
Q

Elasticity

A

How easily is can stretch

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9
Q

Magnetic or non magnetic

A

These it attracted metals or not metal

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10
Q

Density

A

Mass per unit of object

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11
Q

Mixture

A

Combination of two or more pure substances

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12
Q

Homogenous mixture

A

Has a uniform composition and component of the mixture cannot be seen

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13
Q

Heterogeneous mixture

A

Does not have uniform composition and component mixture can be seen

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14
Q

Name the two categories matter is divided in

A

Mixture and pure substances

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15
Q

Pure substances

A

Materials that are not a mixture

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16
Q

Pure substances include

A

Elements and compound

17
Q

How to determine if substances is a pure substances

A

Melting and boiling point or chromatography

18
Q

Melting point

A

Temperature which solid changes to liquid

19
Q

Boiling point

A

Temperature at which liquid changes to gas

20
Q

Chromatography

A

Process where substances ate divided into various components

21
Q

Types of chromatography

A

Paper and liquid and columns

22
Q

Elements

A

Pure substances that cannot be broken into simpler substance

23
Q

Atom

A

Smallest particles of an element

24
Q

Compound

A

●Consist of two or more different atoms that are chemically bonded into single substances

25
Physical properties of metals
● good electrical conductors ●heat conductor ●high melting and boiling point
26
Physical properties of non metals
●No gloss ●poor heat conductors ●low melting and boiling point
27
Common metalloids
Silicon which is shiny but malleable
28
Silicon and germanium is useful in
Electronic devices
29
Electrical conductors
Substance that allow electrical currents to pass through
30
Semi conductors
Poor electricity conductors
31
What happen when to conductivity metals when temperature increases
The conductivity of metals decrease
32
Examples of thermal insulators
Non mental
33
Ferromagnetic
Materials that are strongly attractive by magnetic
34
Examples of ferromagnetic
●iron ●nickel ●cobalt
35
Magnetic alloys
Ferromagnetic materials that consist of non metals with magnetic substances
36
Examples of magnetic alloys
●ceramics - iron and metals oxides ●alnico - aluminum ●steel - iron and carbon