Physical Properties And Physical Changes Of Substances Flashcards
What is Qualitative information?
It is Non-Numerical information
What is Quantitative information?
It is Numerical information
What is Matter?
Matter is anything that has mass and occupies space
What is Chemistry?
Chemistry is the science concerned with the properties, composition and behaviour of matter
What is a substance?
A substance is something with a unique and identifiable set of properties
What is physical properties?
Physical properties can be observed or measured without changing the composition of matter
What is chemical properties?
Chemical properties is a characteristic of substance that may be observed when it undergoes a chemical change or reaction
Two types of physical properties?
Extensive and Intensive property
What is an Extensive property?
An Extensive property of a substance is a physical property which depends on the amount of the substance present
What is an Intensive property?
Intensive property depends on the nature of the substance and not on how much of the substance is present
Three states of matter?
Solid, liquid, gas
What is hardness?
Hardness is how resistant something is to scratching
What is Malleability?
Malleability is the ability to be rolled up or hammered into thin sheets
What is Ductility?
Ductility is the ability to be stretched or drawn into wires
What is Lustre?
Lustre is how shiny something is
What is Viscosity?
Viscosity is the resistance of a fluid to flow
What is Vapour?
Vapour is gas formed by evaporation
What is Vapour Pressure?
Vapour Pressure is pressure created by the vapour evaporating from a liquid
What is an Element?
An Element is a pure substance which cannot be broken down into simpler substances by any chemical process
What is an atom?
An Atom is the smallest unit of matter that forms a chemical element
What is a Molecule?
A Molecule is two or more atoms that are bound together
What is an Ion?
An Ion is an atom or molecule which possesses an electrical charge
What is a Pure Substance?
Pure Substance is a substance that has unchanging, uniform properties
What is a Mixture?
A Mixture is a system made up of two or more substances
What is a Compound?
Compound is a pure substance made up of two or more elements chemically combined
What is an Homogeneous mixture?
All samples of Homogeneous mixture have the same properties or characteristics
What is an Heterogeneous mixture?
An heterogeneous mixture components has different physical properties
What is a Solution?
A Solution is a homogeneous mixture of two or more substances
What is a Solvent?
A Solvent is the component in a solution which exists in the greater quantity
What is a Solute?
A Solute is the component in a solution which exists in the smaller quantity
What is Hand Separation?
Hand Separation is the use of sieve or magnet
What is Filtration?
Filtration allows the separation of liquids from big particles of solids
The material which remains behind on Filter Paper is called?
The Residue
The liquid which passes through the filter paper is called?
The Filtrate
What is Evaporation?
Evaporation is used for a Mixture of solution to separate solid dissolved in liquid
What is Distillation?
Distillation is used when two substances that are completely mixed but have different boiling points
What is Solvent Extraction?
Solvent Extraction is used to separate liquids that does not mix
What is Recrystallization?
Recrystallization is used when a substance has just a few impurities
What is Centrifugation(Gravity Separation)?
Centrifugation is used to separate desired solids from mixture based on density
What is Paper Chromatography?
Paper Chromatography is used to separate solution by allowing it to flow along Chromatography Paper
What is Chemical Change?
Chemical Change is a change in which new substances are produced
What is Physical Change?
Physical Change is a change in which no new substances are produced
What is Kinetic energy?
Kinetic energy is the motion of particles
What is Potential energy?
Potential energy is the forces holding particles together
