(answers are at the bottom)
1. If I have 1 atom of Carbon all by itself (no bonds), do I have an atom or a molecule of carbon?
2. My beaker is filled with nitrogen gas (N2). Which of the following do I have? An element, a molecule and/or a compound?
3. In the same beaker of nitrogen gas, I add Helium gas. Neither gas binds to the other. But there are two types of atoms in my beaker. Do I have a compound?
4. Nitrogen oxide (NO), water (H2O), and carbon dioxide (CO2) are examples of what?
5. If I have 2 or more of the same type of atom (e.g.: oxygen), what do I call the group of atoms?
6. Can a compound be a single atom?
1. an atom. A molecule is two or more atoms bonded together. Therefore a single atom can never be a molecule.
2. an element (because there is only one type of atom in the beaker) and a molecule (because nitrogen gas is made up of two nitrogen atoms bonded together).
3. No. A compound is only formed when two or more different types of atoms bond together to form a molecule of differing atoms.
6. Never. A compound is only formed when two or more different types of atoms bond together to form a molecule of differing atoms. Therefore a compound is always a molecule and never a single atom.
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