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WorksheetsParticulate nature of matter
Total questions: 10
Worksheet time: 7mins
Classifications of matter are...
Substance
Elements
Compound
Molecules
Which are true about the classifications of matter?
Molecules ; electrically negative charged group of two or more atoms held together by physical bonds
Molecules ; electrically neutral group of two or more atoms held together by chemical bonds
Substance ; a sample of matter that has the same physical & chemical properties throughout
Substance ; a sample of matter that doesn't has the same physical & chemical properties throughout
2 types of mixtures
Heterogeneous
Homogeneous
Bigeneous
Unigeneous
What are the correct ones for (1) & (2)?
(1) sublimation
(2) deposition
(1) deposition
(2) sublimation
(1) vapourisation
(2) liquid-gas
(1) redundant
(2) interconversion
Which is true about changes in molecular states in order solid, liquid & gas?
Temperature increases
Molecular motions decrease
Molecular interactions increase
Temperature decreases
Molecular motions increase
Molecular interactions increase
Temperature increases
Molecular motions increase
Molecular interactions increase
Temperature increases
Molecular motions increase
Molecular interactions decrease
What is the definition of vapourisation?
(a)
The Le Chatelier's principle states :
(a)
Movement of matter through diffusion...
Net movement from region of high concentration to region of low concentration
Opposite the concentration gradient
Following the concentration gradient
Net movement from region of low concentration to region of high concentration
• increase in pressure, equilibrium shift towards the side with fewer moles
• decrease in pressure, equilibrium shift towards the side with more moles
The statements above only applies to reactions involving : ..
Gases
Liquid
Solid
Vapour
The preferred phase of a substance at a given set of conditions is a balance between :
Temperature
Energy of particles
Intermolecular forces between particles
External pressure
