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Ne4ueva [31]
3 years ago
14

Which statement is false

Chemistry
1 answer:
ella [17]3 years ago
8 0
Answer is D.

Hope it helped you.
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Explain how the Rutherford gold foil experiment correctly advanced atomic theory away from the plum pudding model?
Rudiy27

Answer is: Rutherford demonstrate that J.J Thompson's Plum Pudding model was not accurate.

Rutherford theorized that atoms have their charge concentrated in a very small nucleus.

This was famous Rutherford's Gold Foil Experiment: he bombarded thin foil of gold with positive alpha particles (helium atom particles, consist of two protons and two neutrons).  

Rutherford observed the deflection of alpha particles on the photographic film and notice that most of alpha particles passed straight through foil.

That is different from Plum Pudding model, because it shows that most of the atom is empty space.

7 0
3 years ago
Read 2 more answers
What do you understand by saturated solution and unsaturated solution
Otrada [13]

A saturated solution is made by dissolving as much solute as possible in a solute. For example, add table sugar (solute) to a glass of water (solvent) until no more sugar will dissolve even with vigorous stirring. The undissolved sugar settles to the bottom of the glass.

hope it helps

8 0
3 years ago
What is meant by ion and salt
Neko [114]

<u>Answer:</u>

<u>Ion</u>

Ion is a charged particle.

A neutral atom contains equal number of positive protons and negative electrons

When an electron is lost or gained the atom becomes a charged particle which is called as an ION.

For example  

Na is an atom which contains 11 electrons and 11 protons(= to atomic number)

When Na loses an electron it will have 11 positive proton and 10 negative electron and Thus, Na will become Na^+, a charge particle which we call it as sodium ion.

Cl is an atom which contains 17 electrons and 17 protons(= to atomic number)

When Cl loses an electron it will have 17 positive proton and 18 negative electron and Thus, Cl will become Cl^-, a charge particle which we call it as chloride ion.

When an ion is positively charged it is called as a cation

When an ion is negatively charged it is called as an anion.

Salt is formed when an acid reacts with a base.

The cation of the base combines with the anion of the acid to form the salt.

$Acid+Base>Salt+water

HCl is acid and NaOH is a base forms salt NaCl and water.

Cl^- is an anion of the acid and Na^+ is the cation of the base combines to form NaCl salt .

H^+and OH^- combines to form H_2 O  

8 0
3 years ago
The columns in the periodic table are also called A. sets. B. periods. C. families. D. energy levels
faust18 [17]
It depends if you are talking about the ones that go up or down
or left and right

the ones that go up and down are called groups

the onesthat go left and right are periods

3 0
3 years ago
Read 2 more answers
According to Avogadro's law how many molecules of any gas at STP are present in a volume of 22.41 L?
Mice21 [21]
At STP (standard temperature and pressure), one mole of a gas occupies 22.41 liters of volume. Avogadro's number (6.022*10^23) is the number of molecules per mole of a substance, or one mole of anything really. This means there are 6.022*10^23 molecules of any gas with a volume of 22.41 L at STP.
7 0
3 years ago
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