Physical Properties And Physical Changes Of Substances

Question 1

What is Qualitative information?

Answer 1

It is Non-Numerical information

Question 2

What is Quantitative information?

Answer 2

It is Numerical information

Question 3

What is Matter?

Answer 3

Matter is anything that has mass and occupies space

Question 4

What is Chemistry?

Answer 4

Chemistry is the science concerned with the properties, composition and behaviour of matter

Question 5

What is a substance?

Answer 5

A substance is something with a unique and identifiable set of properties

Question 6

What is physical properties?

Answer 6

Physical properties can be observed or measured without changing the composition of matter

Question 7

What is chemical properties?

Answer 7

Chemical properties is a characteristic of substance that may be observed when it undergoes a chemical change or reaction

Question 8

Two types of physical properties?

Answer 8

Extensive and Intensive property

Question 9

What is an Extensive property?

Answer 9

An Extensive property of a substance is a physical property which depends on the amount of the substance present

Question 10

What is an Intensive property?

Answer 10

Intensive property depends on the nature of the substance and not on how much of the substance is present

Question 11

Three states of matter?

Answer 11

Solid, liquid, gas

Question 12

What is hardness?

Answer 12

Hardness is how resistant something is to scratching

Question 13

What is Malleability?

Answer 13

Malleability is the ability to be rolled up or hammered into thin sheets

Question 14

What is Ductility?

Answer 14

Ductility is the ability to be stretched or drawn into wires

Question 15

What is Lustre?

Answer 15

Lustre is how shiny something is

Question 16

What is Viscosity?

Answer 16

Viscosity is the resistance of a fluid to flow

Question 17

What is Vapour?

Answer 17

Vapour is gas formed by evaporation

Question 18

What is Vapour Pressure?

Answer 18

Vapour Pressure is pressure created by the vapour evaporating from a liquid

Question 19

What is an Element?

Answer 19

An Element is a pure substance which cannot be broken down into simpler substances by any chemical process

Question 20

What is an atom?

Answer 20

An Atom is the smallest unit of matter that forms a chemical element

Question 21

What is a Molecule?

Answer 21

A Molecule is two or more atoms that are bound together

Question 22

What is an Ion?

Answer 22

An Ion is an atom or molecule which possesses an electrical charge

Question 23

What is a Pure Substance?

Answer 23

Pure Substance is a substance that has unchanging, uniform properties

Question 24

What is a Mixture?

Answer 24

A Mixture is a system made up of two or more substances

Question 25

What is a Compound?

Answer 25

Compound is a pure substance made up of two or more elements chemically combined

Question 26

What is an Homogeneous mixture?

Answer 26

All samples of Homogeneous mixture have the same properties or characteristics

Question 27

What is an Heterogeneous mixture?

Answer 27

An heterogeneous mixture components has different physical properties

Question 28

What is a Solution?

Answer 28

A Solution is a homogeneous mixture of two or more substances

Question 29

What is a Solvent?

Answer 29

A Solvent is the component in a solution which exists in the greater quantity

Question 30

What is a Solute?

Answer 30

A Solute is the component in a solution which exists in the smaller quantity

Question 31

What is Hand Separation?

Answer 31

Hand Separation is the use of sieve or magnet

Question 32

What is Filtration?

Answer 32

Filtration allows the separation of liquids from big particles of solids

Question 33

The material which remains behind on Filter Paper is called?

Answer 33

The Residue

Question 34

The liquid which passes through the filter paper is called?

Answer 34

The Filtrate

Question 35

What is Evaporation?

Answer 35

Evaporation is used for a Mixture of solution to separate solid dissolved in liquid

Question 36

What is Distillation?

Answer 36

Distillation is used when two substances that are completely mixed but have different boiling points

Question 37

What is Solvent Extraction?

Answer 37

Solvent Extraction is used to separate liquids that does not mix

Question 38

What is Recrystallization?

Answer 38

Recrystallization is used when a substance has just a few impurities

Question 39

What is Centrifugation(Gravity Separation)?

Answer 39

Centrifugation is used to separate desired solids from mixture based on density

Question 40

What is Paper Chromatography?

Answer 40

Paper Chromatography is used to separate solution by allowing it to flow along Chromatography Paper

Question 41

What is Chemical Change?

Answer 41

Chemical Change is a change in which new substances are produced

Question 42

What is Physical Change?

Answer 42

Physical Change is a change in which no new substances are produced

Question 43

What is Kinetic energy?

Answer 43

Kinetic energy is the motion of particles

Question 44

What is Potential energy?

Answer 44

Potential energy is the forces holding particles together