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Chemistry > MatterAnd Classification > Flashcards

MatterAnd Classification Flashcards

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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
Q

Physical properties of metals

A

● good electrical conductors
●heat conductor
●high melting and boiling point

26
Q

Physical properties of non metals

A

●No gloss
●poor heat conductors
●low melting and boiling point

27
Q

Common metalloids

A

Silicon which is shiny but malleable

28
Q

Silicon and germanium is useful in

A

Electronic devices

29
Q

Electrical conductors

A

Substance that allow electrical currents to pass through

30
Q

Semi conductors

A

Poor electricity conductors

31
Q

What happen when to conductivity metals when temperature increases

A

The conductivity of metals decrease

32
Q

Examples of thermal insulators

A

Non mental

33
Q

Ferromagnetic

A

Materials that are strongly attractive by magnetic

34
Q

Examples of ferromagnetic

A

●iron
●nickel
●cobalt

35
Q

Magnetic alloys

A

Ferromagnetic materials that consist of non metals with magnetic substances

36
Q

Examples of magnetic alloys

A

●ceramics - iron and metals oxides
●alnico - aluminum
●steel - iron and carbon

Chemistry (6 decks)

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