BSC1005 - Chapter 2 Practice Questions and Answers (100% Pass)
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Course
BSC 1005
Institution
BSC 1005
BSC1005 - Chapter 2 Practice Questions and Answers (100% Pass)
Matter - Answer️️ -Anything that takes up space and has mass
Element - Answer️️ -A substance that cannot be broken down into
another substance by ordinary chemical means. Smallest units that can
make up matter.
- Only 92 na...
• Because an atom is neutral in charge, the Protons always equal the
Electrons. So you can derive the # of electrons from this number as well.
Atomic Mass Number - Answer✔️✔️-Equal to sum of protons and neutrons.
So P + N = Mass Number
Periodic table - Answer✔️✔️-• Elements' chemical and physical
characteristics recur in a predictable manner
• Atoms are arranged in periods (rows) and groups (columns)
Isotopes - Answer✔️✔️-• Atoms of the same element that differ in the
number of neutrons
• Isotopes have the same number of protons but a different number of
neutrons (different mass numbers)
• Unstable and may decay, emitting radiation
• Radioactive isotope behavior is essentially the same as a stable isotope of
same element
The arrangement of electrons - Answer✔️✔️-• Very important!
• Electrons are constantly moving.
• It is useful to construct models of atoms with energy levels or electron
shells to understand how the atom will behave around other atoms
• Each shell contains a certain number of electrons.
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