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THE HISTORY OF ATOM THEORY What Is ATOM ? ATOM is the smallest constituent unit of ordinary matter that has the proper... -
Evidence of a Chemical Reaction 1.Evidences of Chemical Reactions Some chemical changes are easy to observe. The products formed b... -
COMPARE AND CONTRAST THE ELEMENTS This is the elements in the periodic All known substances can be classified as solids, liq...
Hi rini, can you explain about different spessifically from weight and mass at classification of matter. and please give me example. thanks.
BalasHapusokay, thx for your comment and visited my blog!, the difference between mass and weight is if The mass of an object is measure of the amount of matter in it One way to measure an object’s mass is to measure the force it takes to accelerate the object. It takes much more force to accelerate a car than a bicycle because the car has much more mass. A more common way to determine the mass of an object is to use a balance to compare its mass with a standard mass.
HapusAlthough weight is related to mass, it is not the same thing. Weight refers to the force that gravity exerts on an object. This force is directly proportional to the mass of the object. The weight of an object changes as the force of gravity changes, but its mass does not. An astronaut’s mass does not change just because she goes to the moon. But her weight on the moon is only one-sixth her earth-bound weight because the moon’s gravity is only one-sixth that of the earth’s. She may feel “weightless” during her trip when she experiences negligible external forces (gravitational or any other), although she is, of course, never “massless.”
that is my explain about difference weight and mass, thnks!
Rini, please explain the different types of mixtures.. Thank's
BalasHapusokay thanks for comment and visited my blog annisa, well i want to answer your question about difference type of mixture, okey mixture have 2 type, that is :
Hapus(1) Homogenous mixture.
(2) Heterogeneous mixture.
if homogenous mixture is defined as "the mixture, which has uniform composition through out its mass"
for example : sugar solution, salt solution, alloys, soft drinks but if heterogeneous mixture "Mixture that do not have uniform composition through out their
mass are known as heterogeneous mixtures"
for example : Soil, rocks etc.
i think that is enough, thnks nisa :)
what the difference between the compound with a mixture of ? give examples
BalasHapushai rifa, well i want to answer youe question about difference berween compound and mixture. compound is a molecule that contains at least two different elements. All compunds are molecule but not all molecules are compounds. but mixture is composed of two or more types of matter that can be present in varying amounts and can be separated by physical changes, such as evaporation.
Hapusfor example :
1. compound : CH3COOH,etc.
2. mixture : bronze ( element Cu(copper) with Sn (lead))
thanks for comment an visited my blog! have a nice day faa :)
rini can you tell me about the difference subatomic particle?
BalasHapushello uul, okay i will to answer your question about difference subatomic particle, okay A subatomic particle is a unit of matter or energy that's the fundamental makeup of all matter. According to modern atomic theory, an atom has a nucleus, which is its center, or core. The nucleus contains subatomic particles: protons and neutrons. Protons are positively-charged particles. Neutrons are neutral particles. Surrounding the nucleus is a cloud of very small subatomic particles, called electrons. Electrons are negatively-charged particles.
HapusBut these basic atomic components are by no means the only known subatomic particles. However, quarks, muons and neutrinos, which make up major subatomic particles, will not be covered in this lesson.
okay, that is my explain about subatomic perticle thanks for your comment and visited my blog! :)
hi rini , you have really interesting article about matter , atom , mixture and compound , then i have one question for you .
BalasHapusehm my question is
How can be an atom can explode ? where the explode result a terrible bomb and can destroy a city instanly , because we know atom just a smaller part of matter , how can that happened ? i hope you can explain it simple ^^ .
HapusIt depends on exactly what you're asking.
The spontaneous radioactive decay of a nucleus involves only one atom. For example if you take an isolated uranium-235 atom and simply wait it will eventually decay without any interaction with anything else.
However if you're trying to make an atomic bomb this can't be done by relying on spontaneous decay. Instead we use stimulated fission, where a uranium-235 nucleus is struck by a neutron from an external source and this triggers fission. The fission releases three neutrons and these strike other uranium nuclei and trigger their fission, and so on causing a chain reaction and nuclear explosion.
Can you explain why the halogens consists of diatomic molecules?
BalasHapusEach halogen has 7 electrons in its outer shell. Atoms are much more stable when they have 8 electrons in their outer shell.
HapusIn ionic bonding this is achieved by donating/receiving electrons. So a sodium atom donates the single electron from its outer shell to a chlorine atom. The sodium becomes a positively charge ion, the chlorine a negatively charge ion - and they'd attract each other and form sodium chloride. Each ion will also be attracted to other ions of the opposite charge. So a sample of sodium chloride will consist of a lattice of ions attracted to their, oppositely charged, neighbours.
In covalent bonding the electron is shared between the atoms. So two chlorine atoms would each share one of the electrons from their outer shells. That results in both atoms having 8 outer electrons.
Once they've bonded into a diatomic molecule there is no incentive to react any further, so a sample of the halogen will consist of individual molecules.
Hello rini anggi very pleased to be asked by you, the question i was Dalton atomic model is described as a round ball of massive, explain the weakness of the atomic model of Dalton?
BalasHapusThx.
The weaknesses of the theory Atom postulat Dalton:
Hapus1) Atom is not something that is not divided, but consists of particles subatom
2) Atom-atom from the same element, can have a different mass (called isotope)
3) Atom of an element can be changed into other elements through nuclear Nuclear Reaction
4) Some of the elements does not consist of atom-atom molecule-molecule but
Describe to me about a kind of molecules? Please rin
BalasHapusoke demi, thanks to comment and visited my blog, okay i will be answer you question
Hapusthe kind of molecule is :
1. molecules monoatomic
2. molecule poliatomic
I confuse about mixture, please explain it ??
BalasHapusokay agung i want to explain again about mixture, A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs. A mixture can usually be separated back into its original components. Some examples of mixtures are a tossed salad, salt water and a mixed bag of M&M's candy.
HapusHi aceng, whether the compounds can be separated from its components, such as a mixture of
BalasHapus? if it can or not please give an explanation
A chemical reaction is required to separate the substances in a compound. The components of a mixture can be separated based on their physical properties using techniques like filtration or distillation.
HapusExplanation:
To separate the substances in a compound, a chemical reaction is required.
Running electric current through water will produce hydrogen and oxygen gases. This process is called electrolysis.
2H2O -> 2H2 + O2
Substances in mixtures can be separated using physical change processes. For example, a mixture containing salt and water can be separated by having the water transition into the gas state by evaporating or boiling.
NaCl(aq) -> NaCl(s) + 2H2O(g)
Components in mixtures can also be separated using techniques including distillation, filtration, chromatography or taking advantage of other physical properties such as magnetism.
whether just the force of gravity make a weight turned into the mass? if any something that can influence that, what is it?
BalasHapusi think only force of gravity can make a influence of the mass and weight
HapusWho Founder the Molecule in history of Chemistry?
BalasHapus