when we touch an object , what part of it are we actually touching? the atoms the electrons or what?
601608
We never actually touch any thing because of the repulsion of the electrons.  This causes our skin to mold around the object providing a sense that we are touching it.
803143
In atomic physics, the Bohr model depicts the atom as a small, positively charged nucleus surrounded by waves of electrons in orbit — similar in structure to the solar system, but with electrostatic forces providing attraction, rather than gravity, and with waves spread over entire orbits instead of localized planets.
886443
Obviously, an atom isn't the smallest particle since they are composed of sub-atomic particles.  An atom however is the smallest component of an element having the chemical properties of the element.  Once you go beyond an atom of any element, the components no longer keep the properties of that element.
878571
it says that shooting a certain amount of light on metals will cause it to release electrons.Because that means that light actually can do something, it must be a particle, otherwise it would be something that can't really touch other objects and cause something to happen
680011
no one really knows yet.\n\nalthough, at one point, people thought atoms were the smallest particles, now we know about protons, neutrons, and electrons (and now there's a theory that they're made out of something called quarks, but no one really knows what they are)... it's only a matter of time until we find out what they're all made of... and what those things are made of... and what those things are made of... and so on (I seriously doubt it ever ends... like the universe)
486341
Electrons in the outermost shell are called valence electrons.\n·  It is the valence electrons determine an atom’s chemical properties.\n·  Electrons in the inner shells are inner electrons or core electrons.\n\nThe total number of electrons is revealed by the atomic number:\nNa - At#:11 valency:1 valency electrons:1 core:10\nSe - At#:34 valency:2 valency electrons:6 core:28\nPb - At#:82 valency:4 valency electrons:4 core:78
888560
a nucleus, containing protons and neutrons  and around that nucleus, there are electrons. [Although it more correct to speak of electron clouds, as they are not really localized. ]
702218
atom is the smallest building unit of things every thing around us consists of atoms and atoms consists of electrons and protons and neutrons atom is the smallest thing\nmolecule consists of number of atoms like if i said the molecule of water consists of 1 atom of oxygen n 2 atoms of hydrogen\ncompound is a mixture of different molecules\nmatter is the general word
886720
Thats simple,\nAs we rub together two surfaces, there is friction and hence the two close atoms are rubbed together which results in transfer of electrons...\nThe subs in which electrons are transfered is negatively charged (by convention electrons are supposed to have negative charge) and from which they are transfred is said to be positivly charged...
469512
an atom- it is the smallest possible particle of an element that retains the properties of that element.\n\nan atom, being the smallest particle of an element is still composed of smaller particles: \n          • protons - particles with a weight or mass of 1 \n            amu (atomic mass unit) and has 1 positive \n            charge \n          • neutrons - particles with 1 amu and no charge \n            (neutral) \n          • electrons - particles with almost no mass \n            (almost 0 amu) and has 1 negative charge
399707
Atoms consist of protons and neutrons in a nucleus, with electrons in shells round it. \nIn an uncharged/neutral atom, the number of protons and electrons are equal and this is the same as the atomic number. In the periodic table, the elements are arranged in order of increasing atomic number. \nA molecule is two or more atoms chemically bonded together.\ne.g. Ne is an atom and H20 is a molecule.
30976
to explain how two electrons can be near each other
457713
Their electrons essentially occupy the "volume" of the atom. The electrostatic repulsion of the electrons is what makes solid things seem solid. The electrons on the outside of one surface repel the electrons on the outside of another when they come in contact.
937094
ATOM: Each atom consists of a central core with negatively charged electrons revolving around the core. The core consists of positively charged protons and uncharged neutrons. The core is called the nucleus of an atom. An atom as such is electrically neutral. Atoms of different elements have different and unique characteristics. Although all atoms are made up of protons, neutrons and electrons, it is the way these subatomic particles are arranged that gives each of the atom its unique characteristics.   \n\nATOMIC NUCLEUS: The nucleus of an atom is the very dense region in its centre consisting of protons and neutrons. The size of the nucleus is much smaller than the size of the atom itself, and almost all of the mass in an atom is made up from the protons and neutrons with almost no contribution from the electrons.  The nucleus of an atom consists of very tightly bound protons and neutrons which are further composed of sub-atomic fundamental particles known as quarks.
322890
electrons are negatively charged and like charges repel\n\ntherefore, electrons repel\n\nsimilarly protons repel (two +'s)\n\nbut a proton and electron attract, thus causing atoms, and the universe we live in today
253918
Molecules are made of atoms
788506
b. electrons\n\nI really hope you are trying to answer these first before you put them on here because although we are all certainly willing to help you, you are not going to gain anything from just having the answers given to you.  You really need to try and learn this stuff.