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Questions and Answers
Which of the following correctly defines matter?
What is the structure that contains both protons and neutrons?
Which of the following elements is not one of the six essential elements for life?
How can an atom be identified in its neutral state?
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What is the mass number of an atom?
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What represents the smallest part of an element that has its properties?
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Which subatomic particle is negatively charged?
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What information can be inferred from the periodic table about an element's atomic number?
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What element has an atomic number of 49?
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Which element corresponds to the atomic number 39?
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What is the atomic weight of Ruthenium (Ru) commonly approximated as?
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Which of these elements has an atomic number of 47?
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Which element corresponds with the symbol 'Tc'?
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What element has an atomic number of 54?
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Which element has an atomic number of 38?
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What is the approximate atomic weight of Palladium (Pd)?
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What is the atomic mass of the element represented by the symbol 'Au'?
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Which element is represented by the symbol 'Ir'?
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Which of the following atomic masses corresponds to the element with symbol 'Fr'?
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What is the correct atomic mass listed for the element represented by 'W'?
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What mass is associated with the element symbolized by 'Hf'?
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Which of the following symbols corresponds to the element with the atomic number 76?
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The atomic mass of an element noted as 'H' is typically around what value?
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What atomic mass is most likely associated with the element represented by 'Rn'?
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Which element is represented by the symbol 'U' in the Actinide series?
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What is the atomic number of Lutetium (Lu)?
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Which element is found in the lanthanide series but not in the actinide series?
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What connects the lanthanide and actinide series in the periodic table?
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Which of the following elements has an atomic number of 95?
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In terms of group placement, where do the lanthanides and actinides primarily reside?
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Which of the following elements is part of the actinide series?
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What is the atomic mass of Neptunium (Np) approximately?
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What is the main reason atoms seek stability?
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When lithium loses one electron, how many electrons does it have left?
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What type of bond occurs when electrons are shared between nonmetallic atoms?
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Which molecule is an example of a polar molecule?
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What happens when water freezes?
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What term describes the attraction between molecules of the same substance?
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What is a characteristic of nonpolar molecules?
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Which of the following is NOT a property of water?
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Study Notes
Organization of Life
- Life is organized into a hierarchy of levels, starting with atoms and progressing to the biosphere.
- Atoms are the smallest unit of an element.
- Molecules are formed when two or more atoms bond together.
- Cells are the basic unit of life.
- Tissues are groups of similar cells that work together to perform a specific function.
- Organs are made up of different tissues that work together.
- Organ systems are groups of organs that work together to perform a specific function.
- Organisms are made up of one or more organ systems.
- Populations are groups of the same species living in the same area.
- Communities are groups of different populations living in the same area.
- Ecosystems are communities of organisms and their physical environment.
- Biomes are large-scale ecosystems characterized by specific climates and vegetation.
Atomic structure
- Atoms are made of subatomic particles: protons, neutrons, and electrons.
- Protons are positively charged and located in the nucleus.
- Neutrons have no charge and are also located in the nucleus.
- Electrons are negatively charged and found in the electron cloud surrounding the nucleus.
Periodic Table
- The Periodic Table organizes elements by their atomic number.
- Atomic number is the number of protons in an atom's nucleus.
- The atomic number also determines the number of electrons in a neutral atom.
- Mass Number is the sum of protons and neutrons in an atom's nucleus.
Bonding
- Atoms become stable by filling their outer energy levels with electrons.
- Ionic bonds form when electrons are transferred from a metal to a nonmetal.
- Covalent bonds form when nonmetallic atoms share electrons.
- Covalent bonds are the strongest type of bond.
Water
- Water is a polar molecule, meaning it has an uneven distribution of charge.
- The oxygen side of the water molecule is slightly negative, while the hydrogen side is slightly positive.
- The polarity of water allows it to form hydrogen bonds with other water molecules and other polar molecules.
Properties of Water
- Cohesion: The attraction between molecules of the same substance
- Adhesion: The attraction between molecules of different substances
- High specific heat: Water resists changes in temperature.
- Less dense as a solid: Ice floats because it is less dense than liquid water.
- Solvent: Water is an excellent solvent because of its polarity.
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Description
Explore the hierarchical organization of life, starting from atoms and culminating in ecosystems. This quiz covers essential concepts related to atomic structure and the levels of biological organization. Test your knowledge and understanding of how life is structured from the smallest units to large-scale biomes.
