Understanding Atomic Reactions

According to Dalton's atomic theory, what is the nature of atoms in terms of creation and destruction?

• Atoms can be created and destroyed.

• Atoms can neither be created nor destroyed.

• Atoms can only be created.

• Atoms can only be destroyed.

What happens during a nuclear fission reaction?

• Smaller atoms combine to form larger ones.

• Larger atoms are split into smaller ones.

• Atoms are converted directly into energy.

• Atoms are neither created nor destroyed.

Which of the following is an example of a nuclear fission reaction?

• Two hydrogen atoms forming one helium atom.

• Uranium atom splitting into barium and krypton.

• Oxygen atom splitting into hydrogen and helium.

• Carbon atom turning into nitrogen.

Where does nuclear fusion commonly occur?

• In chemical laboratories.

• In large stars like the Sun.

• In the core of the Earth.

• In nuclear power plants.

What does Einstein's equation E=mc² imply about mass and energy?

• Mass can be destroyed to create energy.

• Energy can be created without mass.

• Mass can be converted into energy.

• Energy and mass are unrelated.