Proton

The video explains that atoms are defined by the number of protons they contain, which is unique to each element. For instance, hydrogen atoms have one proton, while carbon atoms have six. This distinction in proton count is what differentiates elements from one another.

What is the basic building block of all matter?

• Molecules

• Atoms

• Cells

• Compounds

What determines the identity of an atom?

• Number of molecules

• Number of protons

• Number of neutrons

• Number of electrons

Which element is defined by having one proton?

• Hydrogen

• Nitrogen

• Carbon

• Oxygen

How many protons does a carbon atom have?

• Four

• Six

• Eight

• Ten

Which of the following is true about elements and protons?

• Elements are defined by their atomic mass.

• Elements are defined by their proton count.

• Elements are defined by their neutron count.

• Elements are defined by their electron count.