What is the term referred to form of an element that has the same atomic number of the

original element but with different atomic mass or mass number?

• Elements

• Heavy elements

• Isotopes

• Light elements

What does an element’s atomic weight determine?

• number of protons and electrons

• number of protons and neutrons

• number of protons only

• number of neutrons only

What is the term referred to the process by which light nuclei fuse together to form a

heavier nucleus?

• Nuclear fusion

• Nuclear reaction

• Nuclear synthesis

• Nucleosynthesis

Aside from the neutron, the core of an atom is made up of which other subatomic particle?

• Electron

• Proton

• Positron

• None of the above

1. It is a theory that explains that the universe started as a very dense and hot “singularity” which eventually cooled and began to form different particles?

• Big bang theory

• Cosmic inflation theory

• Oscillating theory

• Steady state theory

Who developed the latest model of the atom which is accepted until today?

• Ernest Rutherford

• J.J. Thomson

• John Dalton

• Niels Bohr

What force naturally pulls things together?

• Fission

• Fusion

• Gravity

• Pressure

The following light elements were formed in the big bang nucleosynthesis?

• H, C, He, Be

• He, H, Li, Be

• Fe, He, H, Li

• Li, H, He, Na

Arrange the stages of the big bang theory:

1-recombination 2- big bang singularity 3-inflation 4-nucleosynthesis

• 2341

• 2314

• 3214

• 1234

It refers to the first stage of the big bang model wherein it begun as an infinitely hot and dense?

• Big bang singularity

• Inflation

• Nucleosynthesis

• Recombination