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q early theories of matterin ancient greece philosophers discussed the nature of matter the philosopher democritus held that matter was composed of
q what is law of definite proportionsa given compound is forever composed of the same elements in the same proportion by mass this fact is recognized
q what is compounda compound is a substance which consists of two or more elements chemically combined the elements in a compound arent simply
q describe about groups or families in periodic tableevery element may be represented by a one or two letter symbol in the middle of nineteenth
what are the three periods into which interphase is divided interphase is the preceding phase to the mitotic division it is separated into three
q define elements and compoundspure substances are categorized into two categories that are elements and compounds an element is a substance that
is cell division happening during the entire cell cycle what is interphasecell division properly happens during the mitotic phase of the cell cycle
what is cell cyclecell cycle or mitotic cycle is the time period that starts when the cell is formed and finishes when it is divided by mitosis
what is cellular regeneration how is mitosis related to this processsome tissues are able to regenerate when injured the liver for instance
q define homogeneous mixturea homogeneous mixture is one which has a constant composition throughout by mixed sugar in water you create a homogeneous
q explain about heterogeneous mixturea heterogeneous mixture is one that isnt blended smoothly throughout illustrations of heterogeneous mixtures
q what do you mean by mixtures of mattera mixture is a mixture of two or more pure substances in which each substance retains its individual
a reaction among sodium hydroxide and hydrogen chloride gas produces sodium chloride and water and a reaction of 2285g of sodium hydroxide with 2082g
when a result of barium nitrate and a solution of copperii sulphate are mixed a chemical reaction produces solid barium sulphate which sinks to the
when heated calcium hydroxide as well as ammonium chloride reacts to produce water vapor ammonia gas and solid calcium chloride presume 500g of
what are some examples of organs and tissues where mitosis is more frequent less frequent or practically absent generally in vertebrates mitosis is
what is the importance of mitosis for the embryonic developmentevery embryo grows from a single cell that suffers mitosis and operates other cells
a covered glass tube contains 225g of copper and 332g of sulphur the mass of the tube as well as its contents is 1848 g upon heating a chemical
why in some cases is mitosis a synonym of reproductionin some living beings asexual reproduction happens by many means binary division schizogony
what is mitosis what is the importance of mitosismitosis is the process in which one eukaryotic cell separates into two cells identical to the parent
q example on law of conservation of massa slim strip of iron with a mass of 1572 g is placed in to a solution containing 2112 g of copper and copper
q explain about conservation of massconservation of mass above two centuries ago chemists established a fundamental law called the law of
a chemical change takes place when one or more substances change into new substances a chemical change is as well known as a chemical reaction the
q what are changes in mattermatter is able to undergo two fundamental kinds of changes changes that dont alter the composition of matter are called
q show the diffrent kind of matterliquid matter has a specific volume like a solid but flows and takes the shape of its container a liquid is