MatterAnd Classification

Question 1

Explain matter

Answer 1

All object consist of matter and take space and mass

Question 2

Def material

Answer 2

Substance made out of matter

Question 3

Def Streangth

Answer 3

If it cans support heavy load without breaking

Question 4

Def thermal conductivity

Answer 4

If it conduct heat or not

Question 5

Electrical conductivity

Answer 5

If it can conduct electricity or not

Question 6

Brittleness

Answer 6

How easily it can break

Question 7

Malleable

Answer 7

How easily it can change it’s form

Question 8

Elasticity

Answer 8

How easily is can stretch

Question 9

Magnetic or non magnetic

Answer 9

These it attracted metals or not metal

Question 10

Density

Answer 10

Mass per unit of object

Question 11

Mixture

Answer 11

Combination of two or more pure substances

Question 12

Homogenous mixture

Answer 12

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

Question 13

Heterogeneous mixture

Answer 13

Does not have uniform composition and component mixture can be seen

Question 14

Name the two categories matter is divided in

Answer 14

Mixture and pure substances

Question 15

Pure substances

Answer 15

Materials that are not a mixture

Question 16

Pure substances include

Answer 16

Elements and compound

Question 17

How to determine if substances is a pure substances

Answer 17

Melting and boiling point or chromatography

Question 18

Melting point

Answer 18

Temperature which solid changes to liquid

Question 19

Boiling point

Answer 19

Temperature at which liquid changes to gas

Question 20

Chromatography

Answer 20

Process where substances ate divided into various components

Question 21

Types of chromatography

Answer 21

Paper and liquid and columns

Question 22

Elements

Answer 22

Pure substances that cannot be broken into simpler substance

Question 23

Atom

Answer 23

Smallest particles of an element

Question 24

Compound

Answer 24

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

Question 25

Physical properties of metals

Answer 25

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

Question 26

Physical properties of non metals

Answer 26

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

Question 27

Common metalloids

Answer 27

Silicon which is shiny but malleable

Question 28

Silicon and germanium is useful in

Answer 28

Electronic devices

Question 29

Electrical conductors

Answer 29

Substance that allow electrical currents to pass through

Question 30

Semi conductors

Answer 30

Poor electricity conductors

Question 31

What happen when to conductivity metals when temperature increases

Answer 31

The conductivity of metals decrease

Question 32

Examples of thermal insulators

Answer 32

Non mental

Question 33

Ferromagnetic

Answer 33

Materials that are strongly attractive by magnetic

Question 34

Examples of ferromagnetic

Answer 34

●iron ●nickel ●cobalt

Question 35

Magnetic alloys

Answer 35

Ferromagnetic materials that consist of non metals with magnetic substances

Question 36

Examples of magnetic alloys

Answer 36

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