Physical Science week 1

This theory describes that the formation of the universe began through the explosion of the primordial atom which happened approximately 13.7 billion years ago.

• Big Bang

• Stellar Nucleosynthesis

• Supernova Nucleosynthesis

• Tri-alpha Process

It refers to giant cloud of gas and dust.

• Black Hole

• Nebula

• Protostar

• Supernova

It __________ means there is faster rate of capturing neutrons before it undergoes radioactive decay, thus, more neutrons can be combined in the nucleus.

• CNO cycle

• R-process

• S-process

• Tri-alpha process 

An English physicist, who was able to arrange the elements that approximates their observed properties as proposed by Mendeleev.

• Ernest Rutherford

• Ernest Lawrence

• Henrey Moseley

• James Chadwick

The missing elements in the periodic table were discovered by synthesis in the laboratory through _____________.

• artificial transmutation

• nuclear fission

• nuclear transmutation

• proton-proton reaction

Among the following elements below, the most electronegative element is ________.

• chlorine

• nitrogen

• oxygen

• sulfur

The molecular geometry of Carbon tetrachloride is ___________.

• angular

• linear

• tetrahedral

• trigonal pyramidal

Based on its shape/molecular geometry, the molecule NH3 is a _____ molecule.

• ionic

• metallic

• nonpolar

• polar

It is the ability of the two liquids to combine or mix in all proportions, creating a homogenous mixture.

• miscibility

• solubility

• viscosity

• votality

 It is defined as the ability of the solid substance to be dissolved in a given amount of solvent.

• miscibility

• solubility

• viscosity

• votality