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WorksheetsLHTB Physics Pre-Exam (2.1 Matter)
Total questions: 81
Worksheet time: 41mins
An atom with 3 free electrons in its outer shell is said to be
trivalent
covalent
pentavelent
What is the mass number of an element?
Number of neutrons and protons
Number of protons
Number of electrons
What do you get when you add 2H2 and O?
2H2O
H2 O2
H2OH2
The splitting of a chemical compound is called
synthesis
analysis
bombardment
What is the atomic number of an element?
The number of protons in the atom
The number of electrons in the atom
The number of neutrons in the atom
An atom with 5 free electrons is said to be
Trivalent
Covalent
Pentavalent
An atom consists of
protons, neutron and electrons
protons and neutrons
neutrons
The maximum number of electrons in the inner shell of an atom is
8
6
2
The mass of a proton equals the mass of a
neutron
electron
beta particle
Catalysts…
speed up reactions
slow down reactions
speed up and slow down reactions
If the outer shell of an atom is full the the element is
a good conductor
instable/reactive
partially inert
Molecules of the same compound are held together by
gravitational forces
adhesive forces
cohesive forces
Oxygen has a valency of
8
2
6
The further from the nucleus the shells are in an atom
the closer the shells get to each other
the shells retain the same spacing from each other
the further the shells get from each other
What determines an element's identity?
The number of protons
The number of electrons
The number of neutrons
An isotope of an element will have more/less _________ than usual
neutrons
protons
electrons
The smallest part of an element is
a compound
a molecule
an atom
The nucleus of an atom contains
protons and electrons
protons and neutrons
electrons and neutrons
What is atomic mass?
Number of protons plus the number of neutrons
number of electrons
Number of protons
A solid melted into a liquid will take up
more space
no space
less space
What form of heat is used to turn a solid into a liquid?
specific heat
coefficient heat
heat of fusion
Change from solid to gas state without going through liquid state is called
sublimation
state leap
transformation
What is the smallest particle of matter that can exist in nature?
an isotope
a molecule
an atom
A positive ion
has extra electrons
has missing electrons
is a radioactive isotope
The isotope of a carbon atom C14 to C12 will have
same number of protons
same number of electrons
same number of neutrons
If an atom has 2 protons, how many electrons will it have?
1
8
2
A molecule with like atoms is said to be a
compound
element
neutroid
Two elements in the same substance is said to be a
mixture
compound
element
The number of protons in an atom is equal to the number of
electrons
neutrons
mass number
The charge of an electron is
positive
neutral
negative
A valance electron is an electron
in the outermost shell
which is not within an atom
in the innermost shell
Molecules of unlike atoms are combined by their
adhesive force
magnetic force
cohesive force
What is the difference between hydrogen, deuterium and tritium?
The number of neutrons
The number of protons
The number of electrons
The smallest material in the universe is
hydrogen
ion
helium
What is the atomic number of the element shown here?
7
3
4
What is the mass number of the element shown here?
4
5
9
There are solids, liquids and gases present in the universe and every unit of theirs occupy some space. This is called
matter
compounds
mass
An atom deficient of a valency electron is deficient
of an electron in the outer shell
of an neutron in the outer shell
of a proton in the outer shell
The maximum number of electrons in the second shell is
4
8
2
What does an oxygen atom consist of?
Protons, neutrons and electrons
Protons, neutrons
neutrons and electrons
Surface molecular attraction between two different molecules is
Adhesive
Gravitational
Cohesive
The atomic mass number is the number of
Protons + electrons
Neutrons + electrons
Protons +
neutrons
A catalyst in a chemical reaction does what?
Can either speed up or slow it down
Speed it up
Slows it down
What is the number of electrons in the inner-most shell of an atom?
4
8
2
What form of heat is used to turn solid into a gas?
Latent heat
Specific heat
Sensible heat
The heat required to change a liquid to a gas at a constant temperature is the heat of
Fusion
Vaporization
Condensation
An atom with a full outer shell is
Practically inert
A good insulator
A good conductor
An element with a full valence shell is
Very reactive
Good conductor
Inert
A substance of two or more different atoms is
A neutrino
An isotope
A chemical compound
An atom with 5 electrons in its outer shell is
A trivalent
A pentavelent
A covalent
Protons have
No charge
A negative charge
A positive charge
Producing a compound from commonly available materials is...
Synthesis
Analysis
Bombardment
A different number of nucleons in the nucleus of atoms would represent…
Semiconductor
Isotopes
Isotones
Molecules of matter are in constant motion. The amount of vibration or motion is dependent on.…
Temperature
Volume
Pressure
When a chemical change takes place, the smallest particle indivisible in an element is called…
Atom
Proton
Neutron
A nucleus of an atom consists of…
a nucleus and normally has no overall charge at all and so is neutral.
Positively charged particles
Negatively charged particles
A compound is a…
mixture of more than one element which are chemically bonded together.
solution (either liquid or solid) of elements or mixtures of elements to form a new material.
mixture of more than one element which are mixed together.
A compound such as water can exist in how many states?
2
3
1
Select the correct statement from the following...
Matter can only exist in one of three states.
As temperature rises a solid will always become a liquid and then a gas.
Temperature is the only factor which can affect the state in which matter exists.
Isotopes of an element have…
the same number of protons but a different number of neutrons
Same number of electrons
Same number of protons
neutrons have…
no charge
positive charge
negative charge
Atomic MASS number is the number of...
Protons and neutrons
Electrons
Neutrons
How many electrons does an `S` orbital hold?
6
8
2
The number of electrons in a stable atom equals…
the number of protons in the nucleus
the number of electrons in the nucleus
the number of neutrons in the nucleus
An isotope of an element has...
the same atomic number but a different mass number
different mass and atomic number
the same mass number but a different atomic number
The mass number of an element is based on...
the number of protons in the nucleus
the number of electrons in the nucleus
the total number of protons and neutrons in its nucleus
The atomic weight of all atoms is related to...
Carbon
Hydrogen
Helium
The chemical bonding of two or more elements is called...
chemical synthesis
chemical analysis
chemical fusion
Two or more elements that are chemically bonded together and have an even mass distribution form a...
chemical compound
substance
mixture
An atom that gains one or more additional electrons is called
an isotope
a negative ion
a positive ion
Ionic bonding involves...
electron transfer
electron sharing
attraction to a free electron cloud
Non-metals form...
Covalent bonds
Ionic bonds
Metallic bonds
Brownian Movement describes
The motion of molecules
The attraction of electrons
The law between electron transfers
Elements on the extreme right of the periodic table are...
Non-metals
Metals
Transition metals
Oxygen, atomic number 8 is
Trivalent
Bivalent
Covalent
The atomic number of the atom of an element is based on...
the number of protons in its nucleus
the number of electrons in its nucleus
the number of neutrons in its nucleus
water is a…
compound
element
mixture
The Mass of a Proton is approximately...
2000 times greater than the mass of an electron
equal to the relative mass of a molecule
equal to the relative mass of an electron
Noble gases are _______ and _______ and have a full outer shell of electrons
helium, neon, argon
sulphur and neon
fluorine and neon
If a hydrogen atom has 2 neutrons and 1 proton what kind of water would you get?
Heavy water
Fresh water
Salt water
A majority of an atom's mass is in the…
Isotope
Compound
Nucleus
