Exam (elaborations)
Bios 251 Week 2: Questions And Answers (Rated A+)
- Course
- Institution
Bios 251 Week 2: Questions And Answers (Rated A+)
[Show more]
Content preview
Bios 251 Week 2: Questions And Answers (Rated A+)Chemistry Right Ans - The science of structure and interactions of matter.
Matter Right Ans - Anything that has mass and takes up space.
Mass Right Ans - The amount of matter a substance contains.
Weight Right Ans - The force of gravity acting on a mass.
Element Right Ans - The simplest form of matter with unique chemical
properties.
Atom Right Ans - The smallest unit of matter that retains the properties of
an element.
Atomic Structure Right Ans - Consists of a nucleus surrounded by an
orbital.
Subatomic Particles Right Ans - Protons, electrons, and neutrons.
Nucleus Right Ans - The center of an atom.
Protons Right Ans - Positively charged subatomic particles with a mass of 1
atomic mass unit (amu).
Neutrons Right Ans - Neutral subatomic particles with a mass of 1 amu.
Electrons Right Ans - Negatively charged subatomic particles found in
orbitals around the nucleus.
Atomic Number Right Ans - The number of protons in the nucleus of an
atom.
Mass Number Right Ans - The number of protons and neutrons in an atom.
Isotopes Right Ans - Varieties of an element that differ in the number of
neutrons.
, Ions Right Ans - Charged particles with an uneven number of protons and
electrons.
Electrolytes Right Ans - Ions in water capable of conducting electricity.
Compounds Right Ans - Formed when different elements bond together.
Molecules Right Ans - Formed when two or more atoms bond together.
Chemical Bonds Right Ans - Forces of attraction holding atoms together.
Ionic Bonds Right Ans - Formed by the attraction between oppositely
charged ions.
Covalent Bonds Right Ans - Atoms sharing electrons to complete their
outer shells.
Double Covalent Bond Right Ans - Formed when each atom shares 2
electrons
Hydrogen Bonds Right Ans - Weak attraction between a slightly positive
hydrogen atom in one molecule and a slightly negative oxygen or nitrogen
atom in another molecule
Polar Vs. Non-Polar Bonds Right Ans - Described based on the equality of
electron sharing; nonpolar if sharing is equal (e.g., methane), polar if unequal
with one element 'pulling' electrons towards it (e.g., water)
Important Properties of Water Right Ans - - high heat capacity
- solvency
- polarity
- cohesion
- adhesion
- surface tension
Inorganic Compounds Right Ans - Inorganic compounds lack carbon and
are simple molecules
Ex: water
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80461 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now