Lesson 1 PS_ Atoms and Elements

1.     What is the most accepted theory about the formation of the universe explaining that it continues to expand?

• Big bang theory

• Divine Creation Theory

• Oparin Theory

• Spontaneous Generation Theory

1.What is the first proposed structure of an atom by John Dalton in adaption of the concepts of early Greek philosophers like Democritus?

• Nuclear Model

• Solid Sphere Model

• Planetary Mode

• Plum Pudding Model

What is the process of forming elements?

• electrogeneration

•  genesis

• nucleosynthesis

• photosynthesis

What is the lightest and most abundant elements in the universe?

• A. Carbon

• B. Hydrogen

• C.  Oxygen

• D. Nitrogen

Which of the following is the heaviest element among the given?  

• Beryllium

• Helium

• Hydrogen

• Iron

What do you call this whole statement:  “Na + Cl → NaCl”

• Chemicals

• Chemical equation

• Chemical  formula

• Chemical product

What is NaCl for sodium chloride?

• Chemicals

• Chemical equation

• Chemical  formula

• Chemical product

Which of  the following is a covalent compound?

• H2O

• MgO

• NaCl

• CuO

What is the reaction of the combination of two or more nuclei?

• Nuclear Fission

• Nuclear Fusion

• Nuclear Explosion

• Nuclear Combustion

What is the reaction of the splitting of two or more nuclei?

• Nuclear Fission

• Nuclear Fusion

• Nuclear Explosion

• Nuclear Combustion