PHYSCI

Question 1

magnesium plus helium produces

Answer 1

silicon

Question 2

is a type of IFA between molecules with a dipole attracted
to an ion (negatively charged atom or molecule) or cation (positively
charged atom or molecule).

Answer 2

Ion-Dipole

Question 3

By the name itself, this type of intermolecular
force involves the hydrogen element bonded to an atom with high
electronegativity such as Oxygen, Nitrogen, and Fluorine.

Answer 3

Hydrogen Bonding.

Question 4

is the rate of flow of electrical charge .

Answer 4

electrical conductivity

Question 5

some
electrons spend more time to the atom that have stronger attraction – a
property known as

Answer 5

electronegativity.

Question 6

Lightest element

Answer 6

• Helium
• Hyrdrogen
• Deutirium
• Lithium

Question 7

Element No. 85

Answer 7

ormed and named Astatine from the Greek word “astatos” meaning unstable. Interestingly, Astatine can be used in the treatment of thyroid cancer and as a radioactive tracer.ale Corson, Kenneth Ross Mackenzie and Emilio Segre

Question 8

exists in molecules containing hydrogen atom
bonded to a high electronegative element including Nitrogen,
Oxygen, and Fluorine.

Answer 8

Hydrogen bonding

Question 9

to determine the atomic number of an element.

Answer 9

X-ray Spectroscopy

Question 10

Another type of intermolecular force which can exist in a molecule with equal
electronegativity is called the

Answer 10

London Dispersion.

Question 11

the Intermolecular force of
attraction is called

Answer 11

dipole-dipole.

Question 12

occurs in non-polar molecules. The frequent
moving electrons creates instantaneous dipole that attracts the
molecules together.

Answer 12

London Dispersion

Question 13

the resulting molecule with a partial positive pole and a partial negative
pole is called a

Answer 13

dipole.

Question 14

It is used for spacecraft generators and terrestrial navigation beacons. It is also used in neutron detection equipment.

Answer 14

Neptunium (Np)

Question 15

very hot ball of gas (plasma). Stars create elements by combining lighter nuclei into
heavier nuclei via nuclear fusion reactions in their cores and releasing energy in the process.
They are natural nuclear reactors!
* Enormous temperatures (15,000,000 K), pressures, and densities of matter are needed to
initiate the fusion (thermonuclear) reactions which squeeze nuclei together and release energy.

Answer 15

Stellar Nucleosynthesis

Question 16

neon plus helium produces

Answer 16

magnesium

Question 17

All Hydrogen and most Helium in the universe was produced
during the Big Bang Event, starting ~100 seconds after the
explosion. A small amount of Lithium was also produced.

Answer 17

Big Bang Nucleosynthesis

Question 18

oxygen plus helium produces

Answer 18

neon

Question 19

a Russian chemist -In 1869, he arranged the elements in the Periodic Table based on their atomic masses/weights.
He organized elements of the Periodic Table into rows according to their atomic mass and into columns based on chemical and physical properties.

Answer 19

Dmitri Mendeleev

Question 20

is the process by which element are created within the stars by combining proton and neutrons

Answer 20

Stellar nucleosynthesis

Question 21

carbon plus helium produces

Answer 21

oxygen

Question 22

It is a device used to accelerate the protons to very high energies by using magnetic and electrical fields to form new elements.

Answer 22

Particle Acceleration

Question 23

The atomic nuclei fuse in a process called

Answer 23

nuclear fusion.

Question 24

The Intermolecular Forces of attraction or IFA include the

Answer 24

Dipole-
Dipole, Hydrogen Bonding, Ion-Dipole, and London Dispersion.

Question 25

a British physicist, performed successfully a nuclear transmutation, a reaction that changes one element or isotope into another element, in 1919. He used alpha particles to fire on nitrogen nuclei, thereby producing Oxygen (O).

Answer 25

Ernest Rutherford

Question 26

it the temperature at which a solids turn into liquid

Answer 26

melting point

Question 27

Element No. 43

Answer 27

Technetium, Tc

Question 28

Stars formed and created as a

Answer 28

galaxies.

Question 29

deutirium then collided again with protons and netrons to create

Answer 29

tritium

Question 30

The strongest and the last

intermolecular force of attraction that we are going to discuss is called

Answer 30

Ion Dipole

Question 31

temperature at which the pressure exerted by the surrounding upon a liquid.

Answer 31

boiling point

Question 32

The other 86 elements are found in nature in nuclear reaction also called as

Answer 32

supernovae

Question 33

she was not able to consider
are the forces that exist between the molecules of her sample substances.
These forces that exist between the molecules are called

Answer 33

Intermolecular
Forces,

Question 34

Protons and neutrons collided and produce

Answer 34

deutirium

Question 35

was the first element to be produced artificially. This element was found in a sample of molybdenum (Mo-atomic number 42)

Answer 35

Tchneteium

Question 36

lements are artificially prepared in the laboratory. These are elements with atomic numbers greater than 92, the atomic number of Uranium.

Answer 36

Transuranium

Question 37

silicon plus helium produces

Answer 37

sulfur

Question 38

• an English physicist - In 1913, he arranged the elements in the Periodic Table based on their atomic numbers.

He predicted confidently the existence of four new chemical elements, all of which were found.

Answer 38

Henry Moseley

Question 39

Three types:

Answer 39

Big Bang nucleosynthesis
Stellar (star) nucleosynthesis
Supernova nucleosynthesis

Question 40

exists in polar covalent molecules. The opposing poles
of these molecules attract one another.

Answer 40

Dipole-Dipole