WorksheetsChemistry
Total questions: 20
Worksheet time: 13mins
Pure water melts at 0 degrees.
What happen to the water particles when water boils
THEY GAIN ENERGY AND STAY CLOSE TOGETHER
THEY GAIN ENERGY AND MOVE FURTHER APART
THEY LOSE ENERGY AND STAY CLOSE TOGETHER
THEY LOSE ENERGY AND MOVE FURTHER APART
Four processes are listed.
1. brownian motion
2. condensation
3. diffusion
4. evaporation
Which processes not involved in the change of state
1 and 2
1 and 3
2 and 4
3 and 4
All
Which statement explains why isotopes of an element have the same chemical property
they have different number of neutrons
they have the same number of electrons as protons
they have the same number of electrons in the outer shell
they have the same number of protons in the nucleus
Which number is definitely different from isotopes of the different elements
number of electrons
number of protons
number of full shells
number of neutrons
In which substance are the particles close together and slowly moving past each other?
air
steam
water
ice
Boiling and vaporization are alike in that they both:
take place at any point within a liquid
occur only one particular temperature
only occur when liquid is heated
involve a phase change from liquid to gas
The diagram shows a cup of tea.
Which answer describes the water particles in the air above the cup compared with the water particles in the cup
is moving faster but not closer together
moving faster and closer together
not moving faster but is closer together
not moving and not closer together
Which statements are correct about solid and gas
Solid has a high density
Gas has a orderly arrangement
Solid has a high compressibility
Gas has the highest amount of kinetic energy
Solid has the highest forces of attraction while gas has the lowest
In what states of matter does sublimation take place in
Gas and ice
Solid and gas
Gas and liquid
Solid and liquid
Which two physical changes involve heat energy being absorbed?
Condensing and freezing
Freezing and boiling
Melting and boiling
Melting and Condensation
All
State a characteristic of evaporating H2O
(a)
The more -------- liquid, the ----- the boiling point
(a)
What is another name Random motion is known as?
Translational motion
Vibratory motion
Brownian motion
Oscillating mation
Define diffusion
A process in which the particles of a compound get evaporated and is then cooled down later into liquid
A process by which particles mix and spread, through collisions with other particles
A process where particles spread in liquid only
A reaction which occurs when a solid hits with another solid
Which statement explains why isotopes of an element has the same chemical properties?
They have different numbers of neutrons
They have the same number of protons in the nucleus
They have the same number of electrons in the outer shell
They have the same number of electrons and protons
Which number is definitely different for isotopes of the different element?
Number of proton
Number of electrons
Number of full shells
Number of neutrons
Chlorine gas consists entirely of 2 isotopes of mass number 35 and 37.
The relative atomic mass of chlorine gas is 35.5.
What is the percentage composition of the isotope 37Cl?
25%
50%
75%
80%
Which solid has a simple molecular lattice?
Silicon(IV) oxide
Sulfur dioxide
Zinc iodide
Barium
Which statement describes the attractive forces between molecules?
They are strong covalent bonds which hold molecules together
They are strong ionic bonds which hold molecules together
They are weak forces formed between covalently-bonded molecules
They are weak forces which hold ions together in a lattiec
Isotopes are elements that have the same number of ------- and different number of --------
(a)
