Radioactivity

What is particle theory?
A theory that explains how particles move using kinetic energy.
A model that helps explain the properties of solids, liquids, and gases.
A picture which shows the different states of matter.
Name all the subatomic particles.
Neutrons, positrons, and electrons.
Protons and electrons.
Neutrons, electrons, and protons.
What does the atomic number of an element show?
Number of protons and electrons.
Number of protons.
Number of neutrons and protons.
Can atoms of the same element have different mass numbers?
Yes
No
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