The Chemical Substances Hazardous ang dangerous for humans

Chemical Substances Hazardous There are chemicals that are harmful to humans , among others :a. Aluminum sulfate (also 4 )Shaped white crystals , soluble in water . Sulfatdigunakan aluminum instead of alum .b concentrated ammonia ( NH 4OH )Concentrated...

how to use a microscope properly

How do I use a microscope correctly ? To be able to use a microscope to properly consider the following steps :a. Finding the visual field by adjusting irradiation to produce the visual field is the mengatu mirror while looking at that light into...

microscope

In the history of the microscope discovered 16th century thanks to the discovery of a scientist , living thingswhich can not be seen can be seen by using a tool . The tool is a microscope , which allows one to observe objects or beings that are not...

Scientific Work

Scientific Work If someone wants to know something by observation , would not work well if the observations made without going through the steps or planned and systematic method to obtain evidence of the biotic and abiotic . Biotic is a living...

Factors that affect chemical reactions

Factors that affect chemical reactions Chemical reactions can take place quickly, it can also be slow. There are several factors that affect the rate of reaction, among others: 1. Factors Particle Size Collisions between reactants can result in a chemical...

Characteristics of Chemical Reactions

Characteristic Chemical Reactions Chemical reactions that occur result in some changes , among others :1 . Characteristic Chemical Reaction Formation DepositionTry to observe the bottom of the pot used to boil water , is there anything that sticks...

Various chemical reactions

Various chemical reactions in order to facilitate the conduct of chemical reactions , chemical reactions are then grouped by similarity owned . One classification system based on the way the atoms rearrange in chemical reactions , among others :1...

Some things to consider in the equation of Chemistry

Some things to consider in the equation , namely :1 . CoefficientNumbers are on the left formula reactants and reaction products are called coefficients . Each coefficient in the equation represents the number of units of each substance in the reaction2...

Chemical reaction equation

Equation describe chemical reactions which consisted of reagent chemical formula and reaction products with coefficients respectively . In a chemical reaction , one or more substances may be transformed into a new kind of substance . Substances react...

separation of the mixture

Have you ever wondered , if the oil that is in liquid oil wells already ? Why cooking oil mixed with water when heated will cause sparks ? Well , consider the following explanation of this ! Each substance is composed of particles that are very small...

physical and chemical changes in substances

1 . Changes in physical substancePhysical changes are changes to the substance does not produce new types of substances . For example , rice is ground into flour . Rice is ground into flour , just show the shape and size of the change , but the molecular...

Chemical properties of a substance

Chemical properties of a substance is a characteristic of a substance that is associated with the formation of new types of substances . Note metals that are around you , whether all can react with oxygen ? Iron includes substances that easily react...

Physical properties of substances

Substances Substances have properties characteristic of each . Copper wire you can bend easily , while the hard iron bar bent . Characteristic of a substance that can be observed without changing the substance of the constituent materials , called...

Benefits of Heat in Everyday Life

Benefits of Heat in Everyday Life In everyday life you have encountered many household appliances which works using the principle of heat transfer concepts , eg pressure cooker ( pressure cooker ) , irons , tool refining , and refrigeration . Here...

Radiation heat transfer in or radiance

Radiation is the emission of radiation or heat transfer without going through an intermediary substance. When the first fire at Scout activities at your school, what did you feel when you're around a campfire flame? You will feel the warmth of a campfire...

Convection is heat transfer or flow

Convection Convection is the movement or flow of heat in a substance that is accompanied by displacement of the particles of the substance. Convection occurs because of differences in the density of the substance . You can understand convection events...

Heat Transfer by conduction / conduction

Heat Transfer Heat can move from one place to another . How do I heat it changed ? Heat can be transferred in three ways , namely conduction or conduction , convection , or flow , andradiation or emission .Conduction is the transfer of heat through...

Dissolve the substance remains Requires Temperature Heat

Dissolve the substance remains Requires Temperature Heat At melted liquid is transformed from solid to liquid requires heat . At normal air pressure ice transformed from solid to liquid at a temperature of 00C . Heat energy required to raise the temperature...

Factors Affecting Evaporation

Factors Affecting EvaporationThere are several volatile substances , among others : spirits , gasoline , alcohol , etc. . Have you seen why a hot beverage is poured in the cup ? Have you fed your sister hot food , why should blow first? Why should...

Understanding heat and heat formula

Heat is a form of energy that can naturally move from a high temperature object to the lower temperature when in contact . Heat can also move from a low temperature to a higher temperature when the engine is assisted by means of cooling . So that you...