Questions and Answers
Match the subatomic particle to its location within the atom.
Electron = Cloud of probility outside the nucleus Proton = Nucleus Neutron = Nucleus
Match the subatomic particle to its charge.
Electron = negative Proton = positive Neutron = zero (no charge) Positron (antimatter electron) = positive
Match the subatomic particle to its mass in kg. (The carat ^ symbol indicates a superscript)
Electron = 9.1 x 10^-31kg Proton = 1.7 x 10^-27kg Neutron = 1.7 x 10^-27kg
Match the subatomic particle to its mass in Daltons (or atomic mass units or amu)
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This is the wikipedia definition of a Dalton (unified atomic mass unit):
The Dalton or unified atomic mass unit is a unit of mass widely used in physics and chemistry. It is defined precisely as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.
Based on this definition, what is the mass (under the specified conditions) of a ^12C atom?
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A sodium atom is neutral (uncharged). It has 11 protons and _____ electrons.
Answer with a whole digit (integer) with no spaces or decimal.
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A potassium ion has a charge of +1. It has 19 protons and ____ electrons.
Answer with a whole digit (integer) with no spaces or decimal.
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A sodium atom is an ion (charged). It has 11 protons and 10 electrons.
A potassium atom is an ion (charged). It has 19 protons and 18 electrons.
These sodium and potassium ions are:
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A chloride ion has a charge of ____. It has 17 protons and 18 electrons.
Answer with a whole digit (integer) with a + or - sign as appropriate but no spaces or decimal.
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A chloride ion has a charge of ____. It has 17 protons and 18 electrons. The chloride ion described above is a/an:
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Atoms consist of?
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What is found in the atom nucleus?
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Common elements in all living things:
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All about Neutron
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All about Neutrons (select 3)
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All about protons (2)
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All about Protons (2)
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All about electrons (2)
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Study Notes
Subatomic Particles Characteristics
- Protons have a positive charge, located in the nucleus, and each has a mass of approximately 1.67 x 10^-27 kg.
- Neutrons are neutral (no charge), also found in the nucleus, with a mass of about 1.67 x 10^-27 kg, similar to protons.
- Electrons carry a negative charge, found in the electron cloud surrounding the nucleus, with a mass of roughly 9.11 x 10^-31 kg.
Mass in Daltons
- The mass of a ^12C atom is defined as 12 Daltons (or amu), equivalent to 12 unified atomic mass units.
- Protons and neutrons both have a mass of about 1 Dalton each.
- Electrons have a negligible mass compared to protons and neutrons, approximately 0.0005 Dalton.
Sodium and Potassium Atom Charges and Electron Count
- A sodium atom has 11 protons and 11 electrons, making it neutral.
- A potassium ion (K+) has 19 protons and 18 electrons, resulting in a +1 charge.
- A sodium ion (Na+) contains 11 protons and 10 electrons, thus it also holds a +1 charge.
- A potassium ion (K+) has 19 protons and 18 electrons, maintaining a +1 charge.
Chloride Ion Characteristics
- A chloride ion (Cl-) has 17 protons and 18 electrons, resulting in a -1 charge.
- The chloride ion described is negatively charged due to having more electrons than protons.
Atomic Structure
- Atoms consist of protons, neutrons, and electrons.
- The nucleus contains protons and neutrons, with electrons surrounding it in electron shells.
Common Elements in Living Things
- Common elements critical for life include carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
Neutrons
- Neutrons provide stability to the nucleus by reducing the repulsion between positively charged protons.
- Neutrons can vary in number within atoms of the same element, leading to the formation of isotopes.
Protons
- The number of protons in an atom defines its atomic number and determines the element's identity.
- Protons are essential in forming nuclear reactions as they contribute to overall atomic stability.
Electrons
- Electrons are involved in chemical bonding and reactions, influencing how atoms interact.
- The arrangement of electrons in shells determines the atom's reactivity and characteristics.
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Description
Test your knowledge on the locations of various subatomic particles within an atom. This quiz challenges you to match each particle to its correct position, enhancing your understanding of atomic structure. Perfect for students of chemistry and physics.
