Matter is composed of tiny particles which may be atoms, molecules or ions - Leaving Cert Chemistry - Question 11 - 2018
Question 11
Matter is composed of tiny particles which may be atoms, molecules or ions.
Name the three states of matter.
What is the difference:
(i) between an atom and an ion... show full transcript
Worked Solution & Example Answer:Matter is composed of tiny particles which may be atoms, molecules or ions - Leaving Cert Chemistry - Question 11 - 2018
Step 1
Name the three states of matter.
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Answer
The three states of matter are:
Solid
Liquid
Gas
Step 2
What is the difference:
(i) between an atom and an ion?
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Answer
An atom is a neutral entity that contains an equal number of protons and electrons, whereas an ion is a charged atom that has either lost or gained electrons, resulting in an unequal number of protons and electrons.
Step 3
What is the difference:
(ii) between an atom and a molecule?
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Answer
An atom is the smallest unit of an element that retains its properties, while a molecule is a group of two or more atoms bonded together, representing the smallest part of a substance that can exist independently.
Step 4
Give an example of diffusion.
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Answer
An example of diffusion is when ink (or dye) disperses in water, spreading evenly throughout the liquid.
Step 5
Supply the missing words in the following statement of Boyle's law:
'The _1_ of a certain mass of gas is inversely proportional to its _2_, at constant _3_.
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Answer
The missing words are:
pressure (volume)
volume (pressure)
temperature.
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