Nuclear Fusion Processes in Stars

The formation of elements in stars is called

• nucleosynthesis

• nuclear fission

• synthogenesis

• nucleotides

This type of reaction occurs when light nuclei combine to form a larger, single nucleus.

• Fission

• Fusion

• Single Replacement

• Double Replacement

What is the missing element in the following reaction:
 $^{12_{C\ \ }+\ \ _{\ ----\ \ \ \ \ }=\ \ \ \ 20\ _{Ne}}$  

• 4He + H + H = H +H

• 4He + 4He

• 8O

• 8Si

Fusion produces ____________ nuclei

• same sized

• smaller

• larger

• all of the above

What are the products of a nuclear fusion reaction?

• a new element

• a new element plus mass

• a new smaller element plus energy

• a new larger element plus energy

What is the heaviest element that can be fused within a star?

• Iron

• Lead

• Calcium

• Magnesium

 $1_{H\ }+\ 1_{H\ _{\ }}+\ 1_{H\ \ \ }+\ 1_{H\ \ }=\ \ \ _{ }$  Name the product of this nuclear reaction equation.

• 2 hydrogen atoms

• 2 helium atoms and energy

• 1 helium atom and energy

• 1 hydrogen atom and energy

What is the missing element in the nuclear fusion reaction? 10B+____→ 32S

• 12C

• 22Na

• 20Ne

• 32S

Which subatomic particles are involved in nuclear fusion?

• protons and electrons

• neutrons and protons

• electrons and neutrons

• protons, electrons, and neutrons

Which atoms combine together during fusion reaction on the sun?

• hydrogen and helium

• helium and carbon

• hydrogen and lithium

• hydrogen atoms