First Periodic Examination in Physical Science

Which of the following is the most accepted theory about the formation of the universe that explains why it continues to expand?

• big bang theory

• divine creation theory

• steady state theory

• oscillating theory

Which of the following is TRUE about nucleosynthesis?

• It is the division of atomic particles.

• The combination of elements to form compound.

• It is the creation of everything including all matter in universe.

• It is the process of creating new atomic nuclei from pre-existing nuclei.

Which element is the lightest and at the same time the most abundant in outer space?

• hydrogen

• helium

• lithium

• iron

Why do average stars have longer life spans than massive star?

• They have less fuel to burn.

• They have more fuel to burn.

• They burn their fuel at a faster rate.

• They burn their fuel at a slower rate.

Which statement BEST explains how periods on the periodic table are organized?

• Increasing atomic number from left to right.

• Increasing number of neutrons from left to right.

• Decreasing number of electrons from left to right.

• Decreasing atomic mass number from left to right.

What is the difference between an atom of carbon-12 and an atom of carbon-14?

• atomic number

• mass number

• number of electrons

• number of neutrons

Which of the following created a classification of elements based on their atomic weight?

• Dalton

• Mendeleev

• Millikan

• Rutherford

Which of the following are elements with atomic numbers beyond 103?

• Gases Elements

• Halogens

• Lightest Element

• Super Heavy Elements

Which of the following is a device that is used to speed up the protons to overcome the repulsion between the protons and the target atomic nuclei by using magnetic and electrical fields?

• Microscope

• Particle Accelerator

• Particle Decelerator

• Spectroscopy

What is a group of two or more atoms held together by chemical bonds called?

• compound

• element

• molecule

• polar