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Questions and Answers
What are the three components that make up an atom?
What are the three components that make up an atom?
- Protons, neutrons, electrons (correct)
- Neutrons, electrons, isotopes
- Protons, ions, electrons
- Protons, electrons, isotopes
What does the atomic number of an element represent?
What does the atomic number of an element represent?
- Number of neutrons
- Total number of particles
- Number of protons (correct)
- Number of electrons
What does the concentration of a solution express?
What does the concentration of a solution express?
- A ratio of the solute in the solution (correct)
- Dilution and evaporation
- Percents always
- Molarity and normality
Flashcards
Protons
Protons
Positively charged particles found in the nucleus of an atom.
Neutrons
Neutrons
Neutral particles found in the nucleus of an atom.
Electrons
Electrons
Negatively charged particles orbiting the nucleus of an atom.
Study Notes
Atomic Structure
- An atom consists of three main components: protons, neutrons, and electrons.
- Protons and neutrons are located in the nucleus, while electrons orbit around it.
Atomic Number
- The atomic number of an element represents the number of protons present in the nucleus of an atom.
- It is a unique identifier for each element, and it determines the element's position in the periodic table.
Solution Concentration
- The concentration of a solution expresses the amount of solute present in a given amount of solvent.
- It is typically measured in units of moles per liter (mol/L) or grams per liter (g/L).
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