1) What subatomic particle is represented by the orange spheres? a) Electrons b) Protons c) Neutrons d) Nucleus 2) What subatomic particle is represented by the green spheres? a) Electrons b) Protons c) Neutrons d) Nucleus 3) What subatomic particle is represented by the blue spheres? a) Electrons b) Protons c) Neutrons d) Nucleus 4) How many protons does Lithium have? a) 3 b) 4 c) 7 5) What is the approximate atomic mass of lithium? a) 3 b) 4 c) 7 6) How many neutrons does Lithium usually have? a) 3 b) 4 c) 7

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