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Why did Rutherford conclude that an atoms nucleus has a posotive charge instead of a negative charge?
when carrying out the alpha scattering experiment, he observed that some alpha particles got deflected from their course. as alpha particles are helium nuclei, they are positively charged. the fact that they deviate made him think that there might be some repulsion between the particles and the nucleus. as positive charges repel each other, he determined the nucleus to be positively charged.
How many atoms are in atoms?
One! An atom is not made up of other atoms, but has a nucleus of a positively-charged proton and a neutrally-charged neutron. It is surrounded by a network of positively-charged particles called electrons. (sorry, NEGATIVELY charged particles called electrons!)
What is made up of a nucleus?
the nucleus is composed of two main particles the positively charged proton and the neutrally charged neutron
What kinds of particles are found in the atom?
An atom consists of a positively charged nucleus with negatively charged electrons revolving around it. Further, the nucleus is made up of positively charged protons and neutral neutrons.
How colloids can made to settle?
Colloidal particles have ab electrical charge that will repel all other similarly charged colloidal particles. However, these charged particles will attract particles of opposite charge. Therefore, a negative colloid can be made to coagulate (begin to settle out) by adding to it positively charged particles.
Why must there be an attractive force to explain existence of stable nuclei?
Nuclei are made of protons (positively charged), plus neutrons (no charge) Positively charged particles repel each other, so there must be another force preventing them from flying apart. That's why there must be an attractive force.
Why are there electronic charges?
Because the entire universe is made up (Mostly) of positively and negatively charged sub-atomic particles.
Is gamma radiation made from uncharged particles?
No, gamma radiation is made of photons, which are non-charged particles with no mass. They have high energy and are produced from the decay of unstable atomic nuclei or during nuclear reactions.
Why does nuclear fusion bring nuclei extremely close together?
Because the nuclei are all positively charged they repel each other. They are made to stick to each other when brought close enough for the strong force to take hold.
What can be made of one atom?
Positively charged proton Negatively charged electron Neutrally charged neutron Those are fundemental elementary particles and all atoms which make up over 100+ elements in the universe all contain these three fundamental elementary particles.
When Thomson held a positively charged plate near the cathode ray the beam bent toward the plate What conclusion can be drawn from this observation?
The beam bending towards the positively charged plate indicates that the cathode rays are negatively charged. This observation led Thomson to conclude that the cathode rays are made up of negatively charged particles, which we now know as electrons.
Most of the mass of material tht makes up a plasma is .positively charged negatively charged same mass for each?
Under normal conditions, a gas is mainly made up of uncharged particles. That is, the individual gas atomsinclude equal numbers of protons (positively charged particles in the atom's nucleus) and electrons. The negatively charged electrons perfectly balance the positively charged protons, so the atom has a net charge of zero.
