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Questions and Answers
What is an element?
What is an element?
- The smallest part that an element can be reduced to and still keep its properties
- A combination of two or more elements
- The smallest particle that a compound can be reduced to
- A substance that cannot be decomposed any further by chemical action (correct)
What is a molecule?
What is a molecule?
- A combination of two or more elements
- The smallest part that an element can be reduced to and still keep its properties
- A substance that cannot be decomposed any further by chemical action
- The smallest particle that a compound can be reduced to before breaking down (correct)
Which subatomic particle has no charge?
Which subatomic particle has no charge?
- Neutron (correct)
- Proton
- Atom
- Electron
What is the charge of an electron?
What is the charge of an electron?
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Which particle has the smallest mass?
Which particle has the smallest mass?
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Study Notes
Elements and Molecules
- An element is a pure substance consisting of only one type of atom, which cannot be broken down into simpler substances by chemical means.
- Elements are organized in the periodic table, categorized by their atomic number, which represents the number of protons in the nucleus of an atom.
- A molecule is formed when two or more atoms chemically bond together; it can consist of atoms from the same or different elements.
Subatomic Particles
- The neutron is a subatomic particle that has no charge, contributing to the mass of an atom without influencing its electrical properties.
- Electrons carry a negative charge, denoted as -1, and are found in the electron cloud surrounding the nucleus of an atom.
Particle Mass Comparison
- The electron has the smallest mass among subatomic particles, significantly lighter than protons and neutrons, influencing atomic structure and chemical behavior.
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