Biology brooker fifth edition chapter 2 (2.1
and 2.2)
matter - ANS Anything that has mass and takes up space. Usually solids, liquids, and gases.
(In living things)
atoms - ANS the smallest functional units of matter that form all chemical substances and
ultimately all organisms; they cannot be further broken down into other substances by ordinary
chemical or physical means.
molecules - ANS which are two or more atoms bonded together.
Element - ANS A pure substance made of only one kind of atom
Protons - ANS positively charged subatomic particles
Neutron - ANS A subatomic particle that has no charge and that is found in the nucleus of an
atom
Electron - ANS A subatomic particle that has a negative charge
atomic nucleus - ANS An atom's dense central core, containing protons and neutrons.
Orbital - ANS The region surrounding the nucleus of an atom where the probability is high of
finding a particular electron.
Electron shells - ANS An energy level representing the distance of an electron from the nucleus
of an atom.
Energy - ANS The ability to do work or cause change
valence electrons - ANS Electrons on the outermost energy level of an atom
atomic number - ANS the number of protons in the nucleus of an atom
atomic mass - ANS the weighted average of the masses of the isotopes of an element (protons
+ neutrons)
Dalton (DA) - ANS alternative unit equivalent to the atomic mass unit
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 KINGJAY. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
