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2 years ago

State and explain the Dalton's theory?

Chemistry

1 answer:

jolli1 [7]2 years ago

8 0

Explanation:

A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates:(1) Elements consist of indivisible small particles (atoms).(2) All atoms of the same element are identical; different elements have different types of atom.(3) Atoms can neither be created nor destroyed.(4) ‘Compound elements’ (i.e. compounds) are formed when atoms of different elements join in simple ratios to form ‘compound atoms’ (i.e. molecules).Dalton also proposed symbols for atoms of different elements (later replaced by the present notation using letters).

(1) Elements consist of indivisible small particles (atoms).

(2) All atoms of the same element are identical; different elements have different types of atom.

(3) Atoms can neither be created nor destroyed.

(4) ‘Compound elements’ (i.e. compounds) are formed when atoms of different elements join in simple ratios to form ‘compound atoms

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Explain the different between a molecule and a compound.

nevsk [136]

Answer:

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3 years ago

Sheena has a lump of sodium, a lump of potassium and a lump of lithium, but they’ve got mixed up and she doesn’t know which one

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Answer:

Explanation:

Just saw your request regarding answering this so here it is:

All of them belong of Group 1 in periodic table and thus are highly reactive! Pattern of reactivity for Group 1 (Alkali metals) increases as you move down the group as their radius keeps increasing and thus electrons can be easily lost. Thus, to ID the lumps, Sheena should look at their reactivity and she should get the following trend:

Most reactive: Potassium (K)

Intermediate: Sodium (Na)

Least reactive: Lithium (Li)

Hope it helps!

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3 years ago

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3 years ago

What mass of copper sulphate dissolves in 100g of water at 70 °C

ValentinkaMS [17]

The answer mass of copper sulphate is

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3 years ago

A piece of lumber is 7.60cm long. What is it’s length in millimetres and in inches?

MrRissso [65]

Explanation:

Since 10mm is 1cm

Therefore 7.60cm is 760mm

Since 1 inch is 2.54cm

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2 years ago

State and explain the Dalton's theory?​

State and explain the Dalton's theory?