Answer:
Atom is the smallest particle of matter.
Elements are made up of same atoms.
Atom consist of electron, proton and neutron.
Explanation:
Atom was first discovered by John Dalton.
word "Atom" came from Greek word, that means something that could not split. he explained that atom is indivisible particle.
In the end of 18th century J.J. Thomson put forward a new concept of atom. he said that atom have negative charged particles called electrons but overall atom is neutral.
In 1909 Rutherford with his students discovered positive charged particles and nucleus and said that it is in the center of atom.
He explain a model of atom and said that electrons revolve around a hard core in the center called nucleus.
In 1913 Niels Bohr explains the atomic spectra and put forward the concept of shells and sub-shells.
So overall Structure of an Atom is
- consist of Neutrons in nucleus
- +ve charged protons in nucleus
- A -vely charged electrons revolving around the nucleus
- the electron revolve in shells i.e. K, L, M, and N
- Each shell divide in sub-Shell such as s, p,d and f.
Atom has a specific atomic mass and atomic number
Atomic number = number of protons or electron
Atomic mass = number of protons + number of neutrons in nucleus.
Answer:
isn't this like solid liquid and gas
Answer & Explanation:
The given number above, 0.002353, may be rounded to only two significant figures by adding 1 to the 3 which is in the fourth place of the decimal position. This becomes, 0.0024. Addition of 1 was done because the number that follows 3 in the original number is 5.
Atoms that makes up carbon and water are found in table sugar.
Explanation:
These three substances are made up of similar atoms. Carbon is a single element on its own, water is a polar covalent compound and table sugar is a compound.
- The symbol of carbon is C, symbol of water is H₂O and table sugar is C₁₂H₂₂O₁₁
- From the above, one can conclude correctly that table sugar can be expressed in terms of carbon and water.
- Table sugar will then consist of 12 Carbon atoms, and 11 molecules of water.
- Simply 12(C) + 11(H₂O)
Learn more:
Water: brainly.com/question/10861183
sugar: brainly.com/question/8847168
#learnwithBrainly
Answer:
No effect will be observed.
Explanation:
Let´s consider the following reaction.
CuS(s) + O₂(g) ⇋ Cu(s) + SO₂(g)
<em>What effect will reducing the volume of the reaction mixture have?</em>
We need to take into account Le Chatelier's Principle: if a system at equilibrium suffers a perturbation, it will react to counteract that perturbation. According to Boyle's Law, if the volume is reduced then the pressure increases. According to Le Chatelier's Principle the system will try to reduce pressure by shifting the equilibrium towards where there are fewer moles of gases. In this case, there is 1 mol of gases on the left side and 1 mol of gases on the right side. That´s why no effect will be observed.