Reviewer in Physical Science

Which of the following is the first stage of a life cycle of stars?

• blackhole

• nebula

• protostar

• white dwarf

Which of the following is the INCORRECT statement?

• The average star has shorter life span.

• The core of the red giant star is made up of carbon.

• The more the massive the star is the faster it burns its fuel.

• No elements heavier than iron can produced in a massive star.

Which of the following does NOT belong to the group?

• main sequence stars

• nebula

• red giant

• supernova

Who successfully carried out a nuclear transmutation reaction, a process of transforming one element isotope into another element?

• Dmitri Mendeleev

• Ernest Rutherford

• James Chadwick

• Henry Moseley

These are elements with atomic numbers beyond 103?

• Gases elements

• Halogens

• Super heavy elements

• Transition elements

Which of the following is NOT a description of nuclear reaction?

• produces a heavier product nucleus.

• involves a heavy target nucleus and a light bombarding particle.

• emits a very low electromagnetic energy.

• term implied that causes a nuclide to change by bombarding it with energy particle.

What is the relative ability of a bonded atom to attract shared pair of electrons?

• electron affinity

• electronegativity

• ionization energy

• metallic property

Which of the following is TRUE about water?

• it is a polar molecule

• it is a non-polar molecule

• it is both polar and non-polar

• it has no polarity.

Which of the following is an ionic compound?

• MgCl2

• CO2

• CS2

• SO2

What type of chemical bond holds the atoms together within a water molecule?

• ionic bond

• non-polar covalent bond

• polar covalent bond

• coordinate covalent bond