chapter 2 Flashcards
what are the 4 types of BIOMOLECULES
proteins
carboydrates
nucleuic acids
LIPIDS
carbohydrates
end IN OSE (exept gycogen)
fxn:energy
they are used to build sacharides
are atoms and molecules alive
no/ they are also chemical
matter
anything that has mass and takes up space
what is the difference in
solids
liquid
gas
plasma
they all have a different amount of energy present
cations
positive charge and has more protons and electrons than anions
anions
ions with a overall negative charge and gains an electron
hydrogen bonds
type of colvalent chemical bond involving hydrogen ,oxygen
covalent bonds
arise when 2 atoms share electrons
define elements (easy)
they are composed of atoms, each element has a different number of protons, (example: hydrogen has 1 proton, helium has 2)
atoms
they are composed of protons, neutrons and electrons. EACH element has a different number of everything. (protons and neutrons are in the nucleus of an atom and electrons are around it)
when 2 or more atoms chemically bond the result is
a molecule
they are molecules that contain 2 or more ELEMENTS like WATER(H2O) or GLUCOSE(c6h12o6)
compounds
results when electron MOVE from one atom to another
ionic chemical bond
single covalent bond
sharing 1 pair or electrons
double covalent bond
2 pairs of electrons are shared
colvalent chemical bonds
arise when atoms share electrons (the sharing does not need to be equal)
acid
an ionic compound that yields H+ in
solution
base
an ionic compound that yields OH-
in solution
special properties of water
- the solid is less dense than the liquid
2.water is a liquid at room temperature
3.water has a very high heat
4.water is a near universal solvent such just about everything will dissolve more or less in water
how to calculate the PH
count the number of decimals in place
