6 Questions
Atoms are the smallest building units of matter.
True
The nucleus of an atom is found in the electron.
False
Electrons move at high speed around the nucleus.
True
The atomic number of an element is equal to its mass number.
False
Energy levels refer to the movement of electrons around the nucleus.
True
Molecules are made up of atoms.
True
Study Notes
Atomic Structure of Matter
- Atoms are the smallest building units of matter.
- Atoms are made up of a nucleus and electrons that revolve around it at high speed.
Atomic Construction
- Atoms consist of two main parts:
- Nucleus (found in the core, with a positive charge and mass)
- Electrons (revolve around the nucleus with a negative charge)
Expressing an Atom of Any Element
- Atomic number: represents the number of protons in the nucleus of an atom
- Mass number: represents the total number of protons and neutrons in the nucleus of an atom
Electron Movement
- Electrons move around the nucleus in energy levels
- The movement of electrons around the nucleus is related to energy levels
This quiz tests your understanding of the basic building blocks of matter, including atoms and molecules. Identify the smallest unit of matter and understand how they form structures.
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