Physical Science_Review

The formation of elements is known as ___________.

• Fission

• Nucleosynthesis

• Photosynthesis

•  Photolysis

Which of the following molecule is an example of polar covalent compound?

• CH4

• H20

• BF3

• CCl4

Which of the following is TRUE about boiling point of polar molecules?

 

• Generally low boiling point

• Generally high boiling point                       

• Boiling point cannot be determined

• Similar non-polar molecules

The ___ does the dissolving, while the ____ gets dissolved.

• solvent, solute

• solute, solution          

• solute, solvent

• solution, solute

Which of the following refers to the attraction between ionic and polar molecules?

• Ion-Dipole

• Dipole-dipole forces

• Hydrogen bonding

• London Dispersion Forces

Which sugar is found in milk?

• Glucose

• Fructose

• Lactose

• Maltose

Which of the following are the two factors govern whether a collision between reacting particles will be effective?

                      

• Kinetic energy and Orientation

• Kinetic energy and Temperature

• Orientation and Potential energy

• Potential energy and Kinetic energy

Which is the effect of more collisions on the rate of reaction?

• Constant reaction rate                             

• Faster reaction rate

• No change in the reaction rate

• Slower reaction rate

What is the molecular mass of the Al2S3?

• 151.5 g

• 150 g

• 149.5 g

• 152 g

Which of the following DOES NOT belong to the group of polysaccharides?

• Cellulose

• Chitin

• Galactose

• Starch