hi everyone this is teacher jane of teach talk where learning is fun and easy if this is your first time watching our videos don't forget to subscribe and click that bell button so you'll get notified on our next videos welcome to census amazing [Music] science concepts from grade 7 to grade 12. from general science biology chemistry physics and earth science at dito bidang [Music] physical and chemical properties of matter have you ever wondered why young pinkish narrow meat ain't a gigging brown once unigrilled or perpleto na natinto and have you asked why in gold which looks like this becomes like this when it is turned into necklaces rings and other types of jewelry the physical and chemical properties of matter if you remember merenta young concept map laginagamet to classify matter matter can be classified into either pure substances or mixtures under pure substances matter can be elements or compounds under elements matter can either be metals metalloids or non-metals under compounds matter can be organic or inorganic let's go to the other side when matter is a type of mixture it can be a solution a colloid or a suspension in this topic we will focus on the physical and chemical properties of the common substances or matter that we know first physical properties physical properties are those that we can easily observe like size color how does it feel when you touch it state solid liquid or volume how much space it occupies physical properties can easily be identified using our naked eye physical properties are the characteristics of material that can be observed without changing the identity of the material in physical properties the material remains the same even though it changes one or more properties some substances exhibiting physical properties are nails which contain iron and they are attached to a magnet the magnetic attraction is a physical property of iron we also have gold which can be used to create jewelries and ornaments they can be flattened into sheets like gold leaf or a gold ring this physical property is malleability what is harder to identify are the chemical properties some chemical properties are combustion electrolysis oxidation and tarnishing chemical properties are the characteristics of a material that can be observed only when one or more substances are produced soil chemical properties change as a substance or it produces another substance first we have combustion combustion is the fast combination of a fuel with oxygen producing heat light and a new substance substance not just shown on combustion we have this burning paper anubayo news hobistan cena produce we can observe smokes and ashes and these two are the evidences that a chemical property is seen because a new substance is made another chemical property or chemical change is electrolysis electrolysis is the use of electricity to separate or break a compound into elements or simpler compounds what is an example an example is breaking water to produce hydrogen and oxygen take a look at the illustration this is a solution of water but when electricity is used in the process of electrolysis water separates into hydrogen and oxygen the red dots are the red bubbles are hydrogen and the blue bubbles are oxygen next we also have oxidation oxidation is the interaction of oxygen with the substance or material to form a new product a common chemical property is the formation of a new product in oxidation a new product just like in rusting males is formed the new product in this chemical change is the rust date but because of oxidation rust is formed another one is the darkening or blackening of bananas it interacts with oxygen causing it then last on our list of chemical properties of changes is tarnishing tarnishing is the slow combination of a shiny metal just like your rings your necklaces it combines with oxygen sulfur or another substance producing a dark coating therefore losing its brightness it is but through time through the small accumulation of oxygen sulfur and other substances the bright and the shiny instrument becomes like this it produced a dark coating and it is no longer bright just like before this time that ends our discussion and we will have a short quiz i will give you three minutes to answer this quiz after three minutes we will check [Music] number one gold can be shaped into jewelries this is it's black among the choices we only have two nababaga sentence either physical property or chemical property balikta is the first part gold can be shaped is that a physical or a chemical property that is a physical property next number two it causes jewelries to lose its shine o kumoku what is this chemical change or chemical property it is tarnishing number three when you burn wood smoke comes out as a result of blank when you burn something that is the key word when you burn something it involves the process of combustion and smoke is the new substance that is released as a result of this chemical process next number four banana left in the kitchen becomes black because of blank the answer is oxidation because the banana has interacted with oxygen since it is left to be exposed with the air around us it became black due to oxidation last number what chemical process causes water to separate into hydrogen and oxygen between the two choices we are asked which is a chemical process not a chemical property therefore the answer that would fit is electrolysis congratulations to everyone who got five over five i hope you really learned a lot i want to know your score so please comment down but check number that ends our seanch amazing episode we hope that you've learned something from our video don't forget to subscribe and share this video to your friends so that we can learn together bye [Music] [Music] you