Physical Science Quiz #2

What is the most widely accepted theory that explains the origin of the universe?

• big bang

• big splat

• multiverse

• steady state

What refers to the formation of the heavy elements by fusion of lighter nuclei within stars?

• Nuclear fusion

• Nuclear fission

• Stellar nucleosynthesis

• Supernova nucleosynthesis

What is the difference between transuranic elements and super heavy elements?

• The former are elements with atomic numbers beyond lawrencium (Z = 103) while the latter are synthetic elements with atomic numbers higher than that of uranium (Z = 92).

• The former are elements with atomic numbers beyond lawrencium (Z = 92) while the latter are synthetic elements with atomic numbers higher than that of uranium (Z = 103).

• The former are synthetic elements with atomic numbers higher than that of uranium (Z = 103) while the latter are elements with atomic numbers beyond lawrencium (Z = 92).

• The former are synthetic elements with atomic numbers higher than that of uranium (Z = 92) while the latter are elements with atomic numbers beyond lawrencium (Z = 103).

Who is regarded the Father of Periodic Table creating a classification of elements based on their atomic weight?

• Henry Moseley

• James Chadwick

• Dmitri Mendeleev

• Ernest Rutherford

Ana, a nuclear physicist, uses a cyclotron in the bombardment of nuclei. How does the said equipment work to facilitate in her experiment?

• It uses alternating electric field to accelerate particles that move in a spiral path in the presence of a magnetic field.

• It uses alternating electric field to decelerate particles that move in a spiral path in the presence of a magnetic field.

• It uses alternating magnetic field to accelerate particles that move in a spiral path in the presence of an electric field.

• It uses alternating magnetic field to decelerate particles that move in a spiral path in the presence of an electric field.

The following reactions take place in the integration of beta decay into an isotope, EXCEPT:

• Its atomic number goes up by one.

• Its mass number remains the same.

• It emits helium-4 nucleus or alpha particle.

• It emits an electron in the form of beta particle.

What measures the relative tendency of an atom to attract electrons to itself when chemically combined with another atom?

• Atomic size

• Electron affinity

• Electronegativity

• Ionization energy

Which one of the following describes the geometric shape of iron pentacarbonyl, Fe (CO)5?

• Tetrahedral

• Trigonal Planar

• Trigonal Pyramidal

• Trigonal Bipyramidal

What is a real - life example of surface tension observed either in nature or in everyday living?

• Insects walking on water

• Water moving up a straw

• Sugar dissolving in water at 30°C

• Syrup flowing slowly from a bottle

The property that Ana wanted to demonstrate after she investigated how fast the cough syrup flowed to her teaspoon is _____________.