Honors Biology 2.1-2.3 quiz study guide
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/23
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai | Chat |
|---|
No analytics yet
Send a link to your students to track their progress
24 Terms
What is matter?
anything that has mass and takes up space
The number of protons, neutrons, and electrons determine all of the _____ of that atom
properties
What is an element?
collection of atoms that all have the same number of protons
atomic mass=
protons+neutrons
What is an isotope?
protons/neutrons are different but protons/electrons are the same
What is a compound?
formed when two or more elements are combined
What is a molecule?
more than one atom bonded together
How are bonds formed?
electrons in the outermost level (valence electrons)
ionic bonds=
moved from one atom to another; strong
covalent bonds=
shared/orbit around both atoms; strong
hydrogen bonds=
2 slightly charged molecules are attracted to each other; weak (H2O)
A _____ molecule has an uneven distribution of charge
polar
cohesion=
water molecules are attracted to themselves
adhesion=
water molecules are attracted to other polar substances
1st property of water=
water can creep up thin tubes; plants
2nd property of water=
water has a high surface tension; water slider
3rd property of water=
water has a high heat of vaporization; sweat
4th property of water=
water resists temp changes; ocean
5th property of water=
water expands when it freezes; ice
what is an ion?
protons/electrons are different
What is capillary action?
ability of a liquid to flow through narrow spaces against gravity (plants stems as an example)
rows=
number of rings/energy levels around that element (horizontal)
columns=
number of valence electrons attached to that element (vertical)
how many electrons can the outer shell hold?
1st-2
2nd-8
3rd-18
4th-32